Relevant bibliographies by topics / SPME

Academic literature on the topic 'SPME'

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Published: 4 June 2021
Last updated: 25 May 2024

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Journal articles on the topic "SPME"

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Musiman, Musiman, and Muhammad Kristiawan. "Evaluasi Sistem Penjaminan Mutu Program Studi S1 Pendidikan Sekolah Dasar STKIP Muhammadiyah Oku Timur." Jurnal Basicedu 5, no. 6 (October 14, 2021): 5070–77. http://dx.doi.org/10.31004/basicedu.v5i6.1591.

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Pada sistem Penjaminan Mutu Internal (SPMI) belum menjadi prioritas oleh sebagian besar perguruan tinggi jika dibandingkan dengan Sistem Penjaminan Mutu Eksternal (SPME). Amanat UU Nomor 12 Tahun 2012 tentang Pendidikan Tinggi menyebutkan bahwa SPMI dan SPME merupakan bagian dari suatu sistem. Diduga SPMI oleh beberapa Perguruan Tinggi tidak memberikan dampak yang signifikan seperti SPME dimana Perguruan Tinggi akan mendapatkan hasil Akreditasi. Penelitian ini dilakukan pada periode Agustus sampai dengan Desember 2019. Tujuan penelitian ini adalah dalam rangka mengevaluasi Program SPMI yang dikembangkan oleh Program Pendidikan Anak Usia Dini Terakreditasi (PGSD) C. Metode penilaian dilakukan dengan menggunakan pendekatan sistem yang meliputi aspek konteks, masukan, proses, dan keluaran, dengan mengacu pada studi literatur hasil penelitian yang relevan. Hasil pelaksanaan SPMI di prodi PAUD sudah berjalan dengan baik, jika dibandingkan dengan PPEPP semua aspek tahapan pelaksanaannya. Rekomendasi evaluasi SPMI dalam penelitian ini ditujukan kepada tiga pemangku kepentingan, yaitu Direktorat Penjaminan Mutu, Badan Penjaminan Mutu tingkat Universitas, dan Ketua Program Studi
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Ragil, Yoga Aditia, Sri Martini Meilani, and Zarina Akbar. "Evaluasi Sistem Penjaminan Mutu Internal Program Studi S1 Pendidikan Guru Pendidikan Anak Usia Dini." Jurnal Obsesi : Jurnal Pendidikan Anak Usia Dini 4, no. 2 (January 11, 2020): 567. http://dx.doi.org/10.31004/obsesi.v4i2.420.

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Sistem Penjaminan Mutu Internal (SPMI) belum menjadi prioritas oleh sebagian besar Perguruan Tinggi bila dibandingkan Sistem Penjaminan Mutu Eksternal (SPME). Amanah Undang-Undang Nomor 12 Tahun 2012 tentang Pendidikan Tinggi menyatakan SPMI dan SPME merupakan bagian dari suatu sistem. Diduga SPMI oleh sebagian Perguruan Tinggi tidak memberikan dampak yang signifikan seperti SPME dimana Perguruan Tinggi akan mendapatkan hasil Akreditasi. Penelitian ini dilakukan pada periode Agustus sampai dengan Desember 2019. Tujuan penelitian ini dalam rangka mengevaluasi Program SPMI yang dikembangkan oleh Program Studi Pendidikan Anak Usia Dini (PAUD) yang terakreditasi C. Metode pengkajian dilakukan menggunakan pendekatan sistem meliputi aspek konteks, input, proses, dan output, dengan mengacu kepada studi literatur pada hasil-hasil penelitian yang relevan. Hasil pelaksanaan SPMI pada prodi PAUD sudah berjalan dengan baik, bila dibandingkan dengan PPEPP seluruh aspek sudah ditahap pelaksanaan. Rekomendasi evaluasi SPMI pada penelitian ini ditujukan kepada tiga pemangku kepentingan yaitu Direktorat Penjaminan Mutu, Lembaga Penjaminan Mutu tingkat Universitas, dan pimpinan Program Studi.
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HORÁK, Tomáš, Jiří ČULÍK, Marie JURKOVÁ, Pavel ČEJKA, and Vladimír KELLNER. "Application of SPE and SPME in Analysis of Beer." Kvasny Prumysl 52, no. 3 (March 1, 2006): 78–82. http://dx.doi.org/10.18832/kp2006006.

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., Sugiyo. "PENTINGNYA PENYELARASAN SPMI DAN SPME DALAM IMPLEMENTASI SISTEM PENJAMINAN MUTU INTERNAL PERGURUAN TINGGI." JURNAL MATEMAR: MANAJEMEN DAN TEKNOLOGI MARITIM 2, no. 1 (August 16, 2023): 1–10. http://dx.doi.org/10.59225/matemar.v2i1.67.

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Sistem Penjaminan Mutu Pendidikan Tinggi (SPM PT) merupakan standar pendidikan tinggi yang terdiri dari Sistem Penjaminan Mutu Internal (SPMI) yang memiliki siklus tentang Penetapan Standar Dikti, Pelaksanaan Standar Dikti, Evaluasi (pelaksanaan) standar Dikti, Pengendalian (pelaksanaan) standar Dikti dan Peningkatan (pelaksanaan) standar Dikti yang disebut dengan PPEPP. Sedangkan Sistem Penjaminan Mutu Eksternal (SPME) yang memiliki siklus Evaluasi Data dan Informasi, Penetapan Status Akreditasi dan Peringkat Terakreditasi, Pemantauan dan Evaluasi Status Akreditasi dan Peringkat Akreditasi yang disebut dengan EPP. SPMI diimplementasikan pada semua bidang kegiatan perguruan tinggi yaitu Bidang Akademik, yang meliputi bidang pendidikan, bidang penelitian, Bidang pengabdian kepada masyarakat; dan Bidang Non-Akademik yang meliputi Sumber Daya Manusia (SDM), Keuangan, dan sarana dan prasarana. Perencanaan, pelaksanaan, evaluasi, pengendalian, dan pengembangan SPMI dan SPME didasarkan pada Standar Dikti memiliki siklus PPEPP dan metode Evaluasi dilakukan melalui Audit Mutu Internal (AMI), dengan demikian menghasilkan luaran / Output bahwa luaran penerapan SPMI oleh PT digunakan oleh BAN PT atau LAM PT untuk penetapan Status dan peringkat terakreditasi PT dan Program Studi.
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Trofin, Alina Elena, Lucia Carmen Trincă, Elena Ungureanu, and Adina Mirela Ariton. "CUPRAC Voltammetric Determination of Antioxidant Capacity in Tea Samples by Using Screen-Printed Microelectrodes." Journal of Analytical Methods in Chemistry 2019 (May 14, 2019): 1–10. http://dx.doi.org/10.1155/2019/8012758.

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Measurement of antioxidant capacity represents an analytical major challenge in terms of accuracy, efficiency, rapid response, or low cost of detection methods. Quantification of antioxidant capacity of food samples using disposable screen‐printed microelectrodes (SPMEs) was based on cyclic voltammetry versus open-circuit potential (CV vs OCP) and differential pulse voltammetry (DPV) as compared with spectrophotometric measurement of the CUPRAC reaction with 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (trolox). The SPMEs are organic‐resistant electrodes and thus compatible with food samples and organic solvents used to dissolve trolox. A micropipette was used to release a drop of 50 μL sample on the spotted surface of the SPME sensor/working electrode that was time programmed to function according to the working protocol. The SPME response was linearly correlated with trolox content. This preliminary demonstration was focused on the analysis of tea infusions, due to the simplicity and reproducibility of the samples’ preparations involved. Analytical results of the antioxidant capacity (expressed as mol·L−1 trolox equivalents) of the tea samples showed a good agreement in the case of spectrophotometry and differential pulse voltammetry (R2 > 0.998). DPV with SPME based on CUPRAC reactions was proven to be a promising approach for the characterization of antioxidant capacity of tea samples with rapid response, cost-effectiveness, and simplicity of operation.
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Manousi, Natalia, Erwin Rosenberg, and George A. Zachariadis. "Solid-Phase Microextraction Arrow for the Sampling of Volatile Organic Compounds in Milk Samples." Separations 7, no. 4 (December 18, 2020): 75. http://dx.doi.org/10.3390/separations7040075.

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A novel sample preparation method based on the use of the Arrow solid-phase microextraction device was used to extract and preconcentrate volatile organic compounds (VOCs) from milk samples prior to their determination by gas chromatography–mass spectrometry (GC-MS). The experimental parameters of the solid-phase microextraction (SPME) Arrow method were evaluated in terms of fiber type, sample volume, extraction temperature, extraction time, stirring rate and salt addition. Under the optimum extraction conditions, the SPME Arrow was compared with conventional SPME fibers to evaluate the effectiveness of the SPME Arrow method. Evaluation of the conventional SPME procedure was also performed under optimized conditions, for appropriate method comparison. Due to the larger sorption phase volume of SPME Arrow, a higher sensitivity and reproducibility were observed for the determined chromatographic peaks in comparison with conventional SPME fibers. The use of Carbon wide range (WR) SPME Arrow/polydimethylsiloxane (CAR/PDMS) SPME Arrow fibers leads to a compound-dependent improvement of a factor of 4–5x over the classical SPME setup. Moreover, the relative standard deviation (RSD) of the total volatiles for a conventional SPME procedure was 12.5%, while for SPME Arrow it was 6.2%. Finally, the novel method was successfully employed for the analysis of commercially available milk samples. The findings of this study indicate that SPME Arrow can be effectively used for the determination of volatile organic compounds in complex food matrixes.
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Guidotti, Maurizio. "Determination of Se4+ in Drinkable Water by Solid-Phase Microextraction and Gas Chromatography/Mass Spectrometry." Journal of AOAC INTERNATIONAL 83, no. 5 (September 1, 2000): 1082–86. http://dx.doi.org/10.1093/jaoac/83.5.1082.

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Abstract A method was developed for the selective determination of Se4+ in drinkable water by solid-phase microextraction (SPME) and gas chromatography/mass spectrometry (GC/MS). Se4+ was selectively derivatized to ethane, 1,1′-selenobis by reaction with sodium tetraethylborate, extracted by the SPME fiber, and determined by GC/MS. Both headspace (HS)–SPME and direct SPME were studied. The method requires only a few milliliters of sample and 20 min for completion. At 2.0 μg/L concentration, the relative standard deviation was 10.1% for HS–SPME and 9.1% for direct SPME. For HS–SPME, the theoretical detection limit was 81 ng/L and 166 ng/L for direct SPME. The recovery rate was 95%. The method was used to determine Se4+ in 10 tap water samples.
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Alsayadi, Yunes M. M. A., and Saahil Arora. "A review: Total vaporization solid-phase microextraction procedure in different matrixes." Analytical Methods in Environmental Chemistry Journal 5, no. 03 (September 29, 2022): 80–102. http://dx.doi.org/10.24200/amecj.v5.i03.190.

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Total vaporization solid-phase microextraction (TV-SPME) is a type of extraction technique in which a specific solvent dissolves the analyte. Then a tiny amount of solvent is taken to the vial of SPME. Then, the solvent vaporizes in the SPME vial, and sampling is carried out on the headspace of the SPME fiber. As a result, the partitioning phase of the analyte between the headspace and liquid sample is omitted. The equilibrium phase remains the analyte partitioning between the headspace and SPME. TV-SPME was introduced in 2014 by Goodpaster to increase the recovery compared to the liquid injection method. This review discusses different aspects of TV-SPME, including its impact on sampling techniques, theoretical part, sampling procedure, and method optimization. Special attention was paid to its applications. A comprehensive literature study was conducted in the relevant databases to summarize the research work that has been done on this technique. In TV-SPME, the liquid samples completely vaporized and had a less matrix effect and better adsorption. This method needs no sample preparation, consumes less supply, and can be done automatically. Also, TV-SPME enables a cost-effective and efficient extraction for different matrixes. This review summarizes aspects related to TV-SPME.
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Mugo, Samuel M., Scott V. Robertson, and Marika Wood. "A Hybrid Stainless-Steel SPME Microneedle Electrode Sensor for Dual Electrochemical and GC-MS Analysis." Sensors 23, no. 4 (February 19, 2023): 2317. http://dx.doi.org/10.3390/s23042317.

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A mechanically robust in-tube stainless steel microneedle solid phase microextraction (SPME) platform for dual electrochemical and chromatographic detection has been demonstrated. The SPME microneedle was fabricated by layer-by-layer (LbL) in-tube coating, consisting of carbon nanotube (CNT)/cellulose nanocrystal (CNC) film layered with an electrically conductive polyaniline (PANI) hydrogel layer (PANI@CNT/CNC SPME microneedle (MN)). The PANI@CNT/CNC SPME MN showed effective analysis of caffeine by GC-MS with an LOD of 26 mg/L and excellent precision across the dynamic range. Additionally, the PANI@CNT/CNC SPME MN demonstrated a 67% increase in sensitivity compared to a commercial SPME fiber, while being highly robust for repeated use without loss in performance. For electrochemical detection, the PANI@CNT/CNC SPME MN showed excellent performance for the detection of 3-caffeoylquinic acid (3-CQA). The dynamic range and limits of detection (LOD) for 3-CQA analysis were 75–448 mg/L and 11 mg/L, respectively. The PANI@CNT/CNC SPME MN was demonstrated to accurately determine the caffeine content and 3-CQA in tea samples and dark roast coffee, respectively. The PANI@CNT/CNC SPME MN was used for semiquantitative antioxidant determination and composition analysis in kiwi fruit using electrochemistry and SPME-coupled GC-MS, respectively.
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(Mel) Suffet, I. H., A. Bruchet, and C. C. Young. "Development of a closed loop stripping analysis using solid-phase microextraction to analyze geosmin and MIB in drinking water." Water Supply 6, no. 3 (July 1, 2006): 167–74. http://dx.doi.org/10.2166/ws.2006.800.

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A novel analytical method, solid phase microextraction (SPME) coupled with closed loop stripping analysis (CLSA), was introduced for the analysis of MIB and geosmin at nanogram per liter concentration levels. The optimum CLSA/SPME analysis conditions of 65 °C, 60-minute extraction time, and 0.5 M sodium sulfate were determined from a statistical design. The individual Kfw of MIB and geosmin from CLSA/SPME method was 4.21 and 4.85, and resulted an order of magnitude greater than the Kfw obtained from direct SPME method. A detection limit of 10 ng/L of MIB and geosmin was achieved by GC-MS with CLSA/SPME with a polyacrylate phase. Overall, CLSA/SPME provides a fast, solvent-free, and less labor intensive method compared to the standard CLSA. The CLSA/SPME method is a valuable alternative method for the analysis of taste-and-odor causing compounds in drinking water.
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Dissertations / Theses on the topic "SPME"

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Salazar, Vania Cristina Rodríguez. "Desenvolvimento de métodos analíticos por cromatografia gasosa acoplada à espectrometria de massas para a identificação e quantificação de anatoxina-A em amostras de água e florações algais." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/9/9141/tde-07022007-163018/.

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A poluição dos corpos d\'água é de grande preocupação mundial, pois a maioria da população utiliza a água doce de reservatórios, represas ou rios como principal fonte de água potável. A presença no Brasil de florações de cianobactérias capazes de produzir anatoxina-a, revela a necessidade de métodos simples e rápidos que permitam sua detecção e monitoramento. Neste trabalho foram desenvolvidos, otimizados e validados dois métodos analíticos por GC/MS para identificação e quantificação de anatoxina-a em amostras de água e florações, respectivamente. A norcocaína foi usada como padrão interno em ambos os métodos. Os íons escolhidos para serem monitorados foram (íons quantificadores sublinhados): anatoxina-a: 191,164, 293 e norcocaína: 195, 136, 168. As curvas de calibração dos métodos mostraram-se lineares nas faixas de 2.5-200 ng.mL-1 e 13-250 ng.mg-1. Os limites de detecção obtidos foram 2 ng.mL-1 e 10 ng.mg-1. Os métodos demonstraram sensibilidade e especificidade adequada para seu uso no monitoramento ambiental da anatoxina-a.
The water pollution is a big concern around the world, since the most of cities use freshwater reservoirs, dams or rivers as the main drinking water suppliers. Cyanobacterial blooms capable to produce anatoxin-a are regularly present in Brazilian waters. Therefore, there is a necessity of simple and rapid analytical methods to monitor this cyanotoxin. In the present work, two analytical methods by GC/MS for identification and quantification of anatoxin-a in water and algae bloom samples were developed, optimized and validated. Norcocaine was used as internal standard in both methods. The ions chosen to be monitorated were (quantification ions underlined): anatoxin-a 191, 164, 293 and norcocaine: 195, 136, 168. Both method calibration curves showed linearity in the ranges of: 2.5-200 ng.mL-1 and 13-250 ng.mg-1. The obtained limit of detection were: 2 ng.mL-1 and 10 ng.mg-1. The methods showed sensitivity and specificity enough to be used routinely as a tool for anatoxin-a monitoring.
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Martendal, Edmar. "Novas estratégias de otimização para a técnica de SPME e SPME com recobrimento internamente refrigerado." reponame:Repositório Institucional da UFSC, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/95859.

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Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2011
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Esta Tese apresenta três novas estratégias de otimização, sendo duas aplicadas à técnica de microextração em fase sólida (SPME) com recobrimento internamente refrigerado (cold-fiber SPME-CF-SPME) e uma aplicada à técnica de SPME comercialmente disponível. Todas as etapas de otimização foram realizadas multivariadamente através de planejamento composto central. A primeira parte do trabalho consistiu em uma nova estratégia de otimização para amostragem em fase gasosa utilizando CF-SPME. Duas classes de compostos, ésteres de ftalato (EF) e hidrocarbonetos policíclicos aromáticos (HPA), com volatilidades distintas foram escolhidos para esse estudo, no qual se propôs um novo método baseado no uso de duas temperaturas da fibra no mesmo procedimento de extração, objetivando maximizar a quantidade extraída de todos os compostos no menor tempo possível. Comparações foram realizadas entre a nova proposta e o procedimento convencional, sendo obtidos excelentes resultados. A segunda parte do trabalho consistiu na utilização pela primeira vez da técnica de CF-SPME em uma combinação dos modos de extração direto e a partir do headspace para extração simultânea de EF e HPA de uma suspensão de solo em água. Força iônica, tempo de extração, pH e temperatura da fibra foram avaliados para cada modo de extração separadamente e posteriormente para a combinação deles. Comparações foram realizadas entre a utilização de cada um dos modos separadamente, a combinação deles e a utilização do procedimento convencional da CF. O procedimento proposto mostrou melhores resultados em todos os casos. O último estudo realizado consistiu na utilização da técnica de SPME comercial para extração da fração volátil de matrizes vegetais. Tempo e temperatura de extração foram avaliados com a fibra DVB/CAR/PDMS. Propôs-se um novo método baseado no uso de duas temperaturas de extração objetivando maximizar a quantidade extraída de compostos com volatilidades/polaridades distintas. Os dois métodos foram comparados pela análise de cinco amostras, sendo o último mais eficiente em todos os casos.
This study presents three new optimization approaches, two of which were applied to internally-cooled solid-phase microextraction technique (or cold-fiber SPME - CF-SPME) and one to a commercially available SPME. All optimization steps were carried out by means of central composite designs. The first part of the study consisted of a new optimization strategy for gaseous phase sampling using CF-SPME. Phthalate esters (PEs) and polycyclic aromatic hydrocarbons (PAHs) were the model compounds employed in this study. A new method based on the use of two coating temperatures in the same extraction procedure was proposed aiming at maximizing the amount extracted in a minimum extraction time. Comparisons between the proposed and conventional methods were carried out and excellent results were obtained. The second part of the study consisted of the utilization of CFSPME in a combination of extraction modes, direct and headspace, for the simultaneous extraction of PEs and PAHs from a suspension of soil in water. Ionic strength, extraction time, sample pH and fiber temperature were evaluated for each extraction mode separately and then for a combination of the two. Comparisons were made between the use of each mode separately, a combination of the two and the conventional procedure of CF-SPME. The proposed procedure was better in all cases. Finally, a commercially available SPME fiber was used to extract the volatile fraction of plant matrices. Extraction time and temperature were evaluated using DVB/CAR/PDMS fiber. In view of the different optimum extraction temperatures obtained for each group of compounds, a new method based on two extraction temperatures in the same procedure was proposed. The conventional method based on a single extraction temperature was compared to the proposed method by analyzing five samples. The proposed method was shown to be more efficient in all cases.
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Sebben, Viviane Cristina. "Análise de efedrinas e anfetamina em urina empregando spe e spme por cg/em/em." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/12004.

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O Brasil ocupa posição de destaque no consumo mundial de anfetaminas, contrariamente à tendência mundial de retração. Devido aos efeitos colaterais e ao alto potencial de abuso, a produção e comercialização de anfetaminas vêm sendo controladas no mundo inteiro. Com a restrição de uso, houve um retorno a procura pelos equivalentes naturais, especialmente as efedrinas presentes em diversas especialidades farmacêuticas, utilizadas no tratamento de doenças respiratórias. São componentes de vários compostos emagrecedores, suplementos alimentares e dietéticos utilizados para perda de peso e ganho de massa muscular. Face ao uso indiscriminado e a grande incidência de resultados falso-positivos nos testes de triagem para anfetaminas por imunoensaio enzimático homogêneo, fazem-se necessários testes confirmatórios. Neste sentido, este trabalho se propôs a desenvolver um método confirmatório simples e rápido para detecção, identificação e quantificação de efedrinas (efedrina/pseudoefedrina) em amostras de urina por por cromatografia a gás / espectrometria de massas-massas (CG/EM/EM), passível de ser adotado na rotina de laboratórios de análises toxicológicas. Devido à complexidade da matriz e as peculiaridades do analito, inicialmente procedeu-se o estudo do tratamento da amostra, considerando as etapas de derivatização, extração, pré-concentração e purificação, de modo a fornecer um extrato límpido, livre de impurezas, interferentes e com melhor sensibilidade, linearidade e seletividade analítica. Os métodos de extração usados foram extração líquido-líquido (ELL), extração em fase sólida (SPE) e microextração em fase sólida (SPME). Os resultados indicaram que o reagente de derivatização ciclohexanona foi o que apresentou melhor desempenho, menor custo e promoveu maior seletividade dos diasterômeros EF/PEF em colunas normais de CG. Sendo que o método mais apropriado para a detecção e identificação de efedrinas/anfetamina por CG/EM é a SPME levando em consideração características como simplicidade, rapidez, custo, recuperação e ausência de interferentes. Entretanto, considera-se valido o uso de SPE para a quantificação, devido à possibilidade de pré-concentração do analito.
Brazil is one of the biggest amphetamine consumers in the world, going against the worldwide retraction tendency. Due to serious adverse effects and high abuse potential, the production and commercialization of amphetamines has been controlled around the world. With the restriction of its use, there was a return in the search of natural equivalents, especially the ephedrines found in many medicines utilized in the treatment of respiratory diseases. Furthermore, they are components of dietary supplements used to lose weight and muscular mass gain. Because of the indiscriminate use and the high incidence of false-positive results in the amphetamines screening tests by enzyme immunoassay technique, it is necessary confirmatory tests. In this way, the aim of this work is to develop a confirmatory simple and quickly method for the detection and quantification of ephedrines (ephedrine and pseudoephedrine) gas chromatography / mass-mass spectrometry (GC/MS/MS), with possibility to be adopted in toxicological analyses laboratorial routine. Due to the complexity of the matrix and analyte peculiarities, initially proceeds the study of sample treatment, considering the derivatization, extraction, pre-concentration and purification steps, obtaining a limpidous extract, free of impurities, interferents and with better sensitivity, linearity and analytical selectivity. The extraction method used were liquid-liquid extraction (LLE), solid-phase extraction (SPE) and solid-phase microextraction (SPME). The results indicate that cyclohexanone was the derivatization agent with the best performance, lower price and good selectivity in diasteromers EF/PEF separation in normal GC columns. The most appropriate method for detection and identification of ephedrines/amphetamine by GC/MS is SPME, considering characteristics as simplicity, speed, cost, recovery and absence of interferents. However, the use of SPE must be considered to quantification, since it allowed analyte pre-concentration.
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Silva, Rogerio Cesar da. "Dispositivos hifenados para microextração em fase solida." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250197.

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Orientador: Fabio Augusto
Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica
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Doutorado
Quimica Analitica
Doutor em Quimica
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Jou, Kuen-Da. "Integrated analysis and pattern recognition of Swiss cheese aroma by SPME/GC, SPME/GC/MS and electronic noses /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487946776020555.

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Stien, Jan. "Festphasenmikroextraktion (SPME) eine Alternative zu klassischen Extraktionstechniken /." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=961251204.

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Biajoli, Andre Francisco Pivato 1978. "Fibras para SPME (microextração em fase solida) recobertas com novos ormosils sol-gel." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250195.

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Orientador: Fabio Augusto
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica
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Resumo: Este trabalho descreve a obtenção de fibras para microextração em fase sólida a partir do processo sol-gel utilizando-se 3-aminopropiltrimetoxissilano (APTMS) como precursor/modificador orgânico e polidimetilsiloxano hidroxiterminado (PDMS-OH) como modificador orgânico. O material preparado foi caracterizado física e quimicamente através de espectroscopia de absorção no infravermelho e análise termogravimétrica. As fibras recobertas com este material foram avaliadas morfologicamente através de microscopia eletrônica de varredura e caracterizadas analiticamente através do estudo de seus perfis de extração e de dessorção, além de terem sido comparadas com fibras comerciais. Como resultados, verificou-se que os recobrimentos produzidos podem ser utilizados em temperaturas de até 300 °C e que estes apresentam uma morfologia irregular, aspecto favorável para dispositivos de SPME. O perfil de extração mostrou que a fibra possui tempos de equilíbrio rápidos para hidrocarbonetos aromáticos (da ordem de 5 min); o perfil de dessorção mostrou que, após 5 s de injeção, os mesmos analitos são completamente removidos do recobrimento. Comparada com fibras comerciais de poliacrilato (PA - polar) e PDMS (apolar), a fibra sol-gel apresentou melhores propriedades sortivas tanto no tocante a compostos polares (ácidos carboxílicos e álcoois) quanto a compostos de media polaridade (ésteres). A fibra sol-gel foi aplicada com sucesso em determinações quantitativas de clorofenóis em madeiras e águas
Abstract: This work describes the preparation of Solid Phase Microextraction Fibers through the sol-gel process using 3-aminopropyltrimethoxysilane as precursor/organic modifier and polydimethylsiloxane (PDMS) as organic modifier. The chemical and physical properties of the material obtained were studied through infrared absorption spectroscopy and thermogravimetric analysis. The morphology of the fibers obtained were evaluated by scanning electron microscopy; their analytical properties were studied through extraction and desorption profiles and also through comparison with commercial SPME fibers. As results, it was observed that the coatings prepared presented an irregular, rugged surface, desirable characteristics for SPME devices, and may be used up to 300 °C with no thermal decomposition. The extraction profile showed that the fiber allows fast equilibration times (in the order of 5 min) and fast desorption kinetics, with 5 s being needed for complete removal of extracted compounds from the fiber coating. Compared to commercial polyacrylate (PA, polar) and PDMS (apolar) fibers, the sol-gel fiber presented enhanced sorptive properties for polar compounds (carboxylic acids and alcohols) as well as for intermediate polarity ones (esters). The sol-gel fiber was successfully applied to quantitative determination of chlorophenols in wood and water
Mestrado
Quimica Analitica
Mestre em Química
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8

Silva, Bruno José Gonçalves da. "Avaliação técnica SPME/LC na análise de antidepressivos em amostra de plasma para fins de monitorização terapêutica." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-17082007-114009/.

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As recentes técnicas miniaturizadas de preparo de amostra, microextração em fase sólida (SPME) e in tube SPME, apresentam uma série de vantagens em relação aos métodos clássicos de extração (extração líquido-líquido e extração em fase sólida), tais como: não requer instrumentação analítica sofisticada, utilização de pequenas quantidades de solventes orgânicos, rápido processo operacional, permite automação das análises, a reutilização das fases extratoras, e integra em um único sistema a extração, concentração e introdução da amostra no cromatográfico. Esta dissertação tem como objetivo a padronização, validação e comparação dos métodos SPME/LC-UV com dessorção off line e in tube SPME/LC-UV, para a análise dos antidepressivos da nova geração (mirtazapina, citalopram, paroxetina, duloxetina, fluoxetina e sertralina) em amostras de plasma para fins de monitorização terapêutica. As variáveis: fase extratora, pH da matriz, tempo e temperatura de extração e de dessorção e força iônica apresentaram grande influência na eficiência do processo SPME. O método SPME/LC-UV padronizado, apresentou limite de quantificação (LQ) de 25 a 50 ng mL-1, ampla faixa de linearidade (LQ ? 500 ng mL-1, r2 > 0,9970) e precisão inter ensaios com coeficientes de variação menor que 15% para todos os analitos. Apesar das baixas taxas de recuperação obtidas, de 8,1% (citalopram) a 17,1% (mirtazapina), o método SPME/LC-UV apresentou seletividade e sensibilidade analítica adequada. As variáveis: pH da matriz, fluxo e número de ciclos aspirar/dispensar e volume de amostra apresentaram grande influência na eficiência do processo in tube SPME. A etapa de precipitação de proteínas do plasma, anterior ao processo de extração, foi necessária para a eliminação dos compostos endógenos. O método in tube SPME/LC-UV padronizado apresentou seletividade adequada, precisão inter ensaios com coeficiente de variação menor que 10%, LQ de 20 a 50 ng mL-1, linearidade na faixa de concentração do LQ a 500 ng mL-1, com r2 > 0,9983 para todos os analitos e recuperação absoluta de 5,32% (mirtazapina) a 43,5% (sertralina). A técnica in tube SPME, quando comparada à SPME, permitiu a automação das análises, menor exposição do analista às amostras biológicas e solventes orgânicos, menor tempo de análise e menor volume de amostra de plasma. A eficácia dos métodos, SPME/LC-UV e in tube SPME/LC-UV, foi comprovada através das análises de amostras de plasma de pacientes em terapia com os antidepressivos, para fins de monitorização terapêutica.
The recent miniaturized sample techniques preparation, solid phase microextraction (SPME) and in tube SPME, present several advantages when compared with classic extraction methods (liquid-liquid extraction and solid phase extraction), such as: it does not require sophisticated analytical instrumentation, use small organic solvent amounts, fast operational process, automation of the analyses, reuse extraction phases, and incorporates, into a single procedure, sample extraction, concentration and sample introduction. The aim of this work is development, validation and comparison of methods SPME/LC-UV with off line desorption and in tube SPME/LC-UV, for analyses of antidepressants of the new generation (mirtazapine, citalopram, paroxetine, duloxetine, fluoxetine and sertraline) in plasma samples for therapeutic drug monitoring. Variables: extraction phase, matrix pH, time and temperature of extraction and desorption and ionic strength showed great influence in SPME process efficiency. The method SPME/LC-UV presented limit of quantification (LOQ) variety from 25 to 50 ng mL-1, wide range the of linearity (LOQ 500 ng mL-1, r2 > 0.9970) and interassays precision with coefficient of variation lower than 15% for all analytes. Although the low recovery, from 8.1% (citalopram) to 17.1% (mirtazapine), the method SPME/LC-UV presented adequate selectivity and analytical sensitivity. Variables: matrix pH, flow and number of aspirate/dispense cycles and sample volume showed great influence in the in tube SPME process efficiency. The protein precipitation of the plasma steps, previous to the extraction process, was necessary for the endogenous compounds elimination. The method in tube SPME/LC showed adequate selectivity, interassays precision with coefficient of variation lower than 10%, LOQ variety from 20 to 50 ng mL-1, linearity in range concentration from LOQ to 500 ng mL-1, with r2 > 0.9983 for all analytes and recovery from 5.32% (mirtazapine) to 43.5% (sertraline). The technique in tube SPME, compared with the SPME, permitted the automation of the analyses, minor exposition of the analyst to the biological samples and organic solvent, shorter analyses time and minor plasma sample volume. The effectiveness methods, SPME/LC-UV and in tube SPME/LC-UV, was proven through the analyses of plasma samples of patients in therapy with antidepressants, for therapeutic drug monitoring.
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Olivares, Igor Renato Bertoni. "\"Desenvolvimento, otimização e validação da técnica HS-SPME-GC/MS para análise de amostras obtidas do Rio Atibaia através da aplicação de uma sistemática \"ISO\" para diagnóstico ambiental de áreas contaminadas\"." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/75/75132/tde-16042007-171617/.

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Neste trabalho foi desenvolvida, otimizada, e validada, uma metodologia para análise de 15 pesticidas organoclorados em sedimento através de HS/SPME-GC/MS. Esta metodologia foi aplicada para análise de amostras reais visando à realização de um diagnóstico da contaminação por pesticidas organoclorados do Rio Atibaia, principalmente em sua região próxima a contaminação oriunda da empresa Shell Brasil S.A. unidade de Paulínia. Para realização deste diagnóstico, também foi desenvolvida uma metodologia padronizada para diagnóstico ambiental de áreas contaminadas, embasada principalmente em conceitos de Gestão de Qualidade e Meio Ambiente abordadas nas normas ISO 17025, ISO 14001 e GLP. Finalmente, aplicando a metodologia analítica validada, e a metodologia para realização de um diagnóstico ambiental, foi realizado o diagnóstico da presença de pesticidas organoclorados no Rio Atibaia, indicando a existência de diferentes pesticidas organoclorados em sedimento, com destaque para os compostos DDE e BHC que se encontraram em valores acima dos recomendados pela legislação canadense. Os resultados encontrados também demonstraram que as metodologias desenvolvidas foram adequadas para análise de uma contaminação real.
In this work a methodology was developed, optimized and validated for the analysis of 15 organochlorine pesticides in sediment through HS/SPME-GC/MS. This methodology was applied to the analysis of real samples for diagnosis of the organochlorine pesticides contamination of the Atibaia River, mainly in its region close the contamination from company Shell Brasil S.A. site of Paulínia. For accomplishment of this diagnosis, also a standard methodology for environmental diagnosis of contaminated areas was developed, mainly based in concepts of Quality Management and Environmental Management find in standards like ISO 17025, ISO 14001 and GLP. Finally, applying the validated analytical methodology and the methodology proposed for environmental diagnosis, the diagnosis of the organoclhorine pesticide presence in the Atibaia River was performed, indicating different organoclorine pesticides in sediment, mainly DDE and yBHC, which were found in values above of those recommended by the Canadian legislation. The results also demonstrated that the developed methodologies are adequate for analysis of a real contamination.
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Menezes, Filho Adalberto. "Desenvolvimento, validação e aplicação de metodologias para determinação de resíduos de agrotóxicos em manga por SPME-GC-MS e SPME-HPLC-UV-Vis." Instituto de Química, 2010. http://repositorio.ufba.br/ri/handle/ri/20281.

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Foram desenvolvidas, validadas e aplicadas duas metodologias analíticas por SPME e análise por GC-MS e HPLC-UV-Vis, para determinar resíduos de agrotóxicos em manga. 14 compostos foram analisados por GC-MS (clofentezina, carbofuran, diazinon, parationa, malationa, fentiona, tiabendazol, imazalil, bifentrina, permetrina, procloraz, piraclostrobina, difenoconazol, azoxistrobina) e 10 por HPLC-UV-Vis (tiabendazol, carbofuran, azoxistrobina, procloraz, fentiona, clofentezina, permetrina, abamectina, carbosulfan e bifentrina). Diferentes parâmetros que influenciam na eficiência da extração foram avaliados (Tipo de fibra, modo de extração, temperatura e tempo de extração e dessorção, velocidade de agitação e força iônica). Os melhores resultados foram obtidos com fibra de PA e DI a 50°C por 30 min, com agitação a 250 rpm e dessorção por 5 min a 280°C no GC- MS e no modo estático por 15 min na interface SPME-HPLC. Na validação foram avaliados o efeito da matriz, a linearidade das curvas analíticas, LOD, LOQ, precisão e exatidão. O método por SPME-GC-MS apresentou linearidade entre 3,3 e 1665,0 µg kg-1, LOD entre 1,0 e 3,3 µg kg-1 e LOQ entre 3,3 e 33,3 µg kg-1. O método por SPME-HPLC- UV-Vis apresentou linearidade entre 2,0 e 250,0 µg kg-1, LOD entre 0,6 e 3,3 µg kg-1 e LOQ entre 2,0 e 10,0 µg kg-1. Nos dois métodos foram obtidos CV menores que 20%. Os métodos foram aplicados na análise de amostras coletadas em Salvador-BA e Aracaju-SE. Nas amostras de Salvador foram detectados resíduos de sete compostos e nas de Aracaju resíduos de cinco compostos. Entretanto, as concentrações estavam abaixo dos valores estabelecidos pela Legislação Brasileira.
Were developed, validated and applied two analytical methodologies by SPME and GC-MS and HPLC-UV-Vis analysis to determine pesticide residues in mango. 14 compounds were analyzed by GC-MS (clofentezine, carbofuran, diazinon, methyl parathion, malathion, fenthion, thiabendazole, imazalil, bifenthrin, permethrin, prochloraz, pyraclostrobin, difenoconazole, azoxystrobin) and 10 for HPLC-UV-Vis (thiabendazole, carbofuran, azoxystrobin, prochloraz, fenthion, clofentezine, permethrin, abamectin, bifenthrin and carbosulfan). Different parameters influencing the extraction efficiency were evaluated (fiber type, extraction mode, temperature, extraction and desorption times, stirring velocities and ionic strength. The best results were obtained using PA fiber and DI mode at 50°C form 30 min, along with stirring at 250rpm and desorption for 5 min at 280°C in the GC-MS and estatic mode for 15 min in the SPME-HPLC interface. For validation, we assessed the matrix effect, the linearity of calibration curves, LOD, LOQ, precision and accuracy. The method for SPME-GC-MS showed linearity between 3.3 and 1665.0 mg kg- 1, LOD between 1.0 and 3.3 µg kg-1 and LOQ between 3.3 and 33.3 µg kg-1. The method for SPME-HPLC-UV-Vis showed linearity between 2.0 and 250.0 µg kg-1, LOD between 0.6 and 3.3 µg kg-1 and LOQ between 2.0 and 10.0 µg kg-1. In both methods were obtained CV below 20%. The methods were applied in the analysis of samples collected in Salvador- BA and Aracaju-SE. In samples from Salvador seven compounds residues were detected and in samples from Aracaju five compounds residues were detected. However, the concentrations were below the values established by Brazilian legislation
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Books on the topic "SPME"

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United States. National Aeronautics and Space Administration., ed. SPDE/SPRE final summary report. [Washington, DC]: National Aeronautics and Space Administration, 1993.

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Baumann, Suzanne. Spime. Clarkston, Mich: Fridge Magnet Concoctions, 1996.

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Fratila, Andra, ed. Drumul spre interioritate. Bucharest, Romania: Editura Universitatii Nationale de Muzica Bucuresti, 2006.

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Soldati e spie. Milano: Cairo, 2011.

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Tismaneanu, Vladimir. Încet, spre Europa. Iași: Polirom, 2000.

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Iorgulescu, Mircea. Spre alt Istrati. București: Minerva, 1986.

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Privind spre Ierusalim. Bucuresti: Hasefer, 2016.

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Boatti, Giorgio. Enciclopedia delle spie. Milano: Rizzoli, 1989.

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Dorcescu, Eugen. drumul spre tenerife. Timişoara: Eubeea, 2009.

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Friedrich-Spee-Gesellschaft. Friedrich Spee-Lesebuch. 2nd ed. Berlin: Lit, 2010.

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Book chapters on the topic "SPME"

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Purcaro, Giorgia, Sabrina Moret, and Lanfranco S. Conte. "Microestrazione in fase solida (SPME)." In Il campione per l’analisi chimica, 177–214. Milano: Springer Milan, 2014. http://dx.doi.org/10.1007/978-88-470-5738-8_7.

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Gómez-Ríos, Germán Augusto, Nathaly Reyes Garcés, and Marcos Tascon. "Smart Materials in Solid Phase Microextraction (SPME)." In Handbook of Smart Materials in Analytical Chemistry, 581–620. Chichester, UK: John Wiley & Sons, Ltd, 2019. http://dx.doi.org/10.1002/9781119422587.ch18.

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Roszkowska, Anna, Miao Yu, and Janusz Pawliszyn. "In Vivo SPME for Bioanalysis in Environmental Monitoring and Toxicology." In A New Paradigm for Environmental Chemistry and Toxicology, 23–31. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-9447-8_3.

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Boyaci, E., E. Gionfriddo, A. Roszkowska, and B. Bojko. "Chapter 5. Advances in Solid Phase Microextraction (SPME) for Metabolomics." In Advanced Mass Spectrometry-based Analytical Separation Techniques for Probing the Polar Metabolome, 91–124. Cambridge: Royal Society of Chemistry, 2021. http://dx.doi.org/10.1039/9781839163524-00091.

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Ouyang, Gangfeng. "SPME Devices Integrating Sampling with Sample Preparation for On-Site Analysis." In Handbook of Sample Preparation, 325–39. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9780813823621.ch18.

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Bondarenko, S., J. Gan, and F. Spurlock. "Solid-Phase Microextraction (SPME) Methods to Measure Bioavailable Concentrations in Sediment." In ACS Symposium Series, 149–68. Washington, DC: American Chemical Society, 2008. http://dx.doi.org/10.1021/bk-2008-0991.ch008.

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Zhang, Shucha, and Daniel Raftery. "Headspace SPME-GC-MS Metabolomics Analysis of Urinary Volatile Organic Compounds (VOCs)." In Methods in Molecular Biology, 265–72. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4939-1258-2_17.

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Hunter, Wesley, Weichun Yang, Frank Spurlock, and Jay Gan. "Solid-Phase Microextraction (SPME) Methods to Measure Bioavailable Concentrations in Surface Waters." In ACS Symposium Series, 130–48. Washington, DC: American Chemical Society, 2008. http://dx.doi.org/10.1021/bk-2008-0991.ch007.

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Bürck, J., K. Krämer, S. Roth, and H. Mathieu. "Location of Hydrocarbon Leakage by Combining SPME in Optical Fibers and OTDR Techniques." In Field Screening Europe 2001, 247–52. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0564-7_39.

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Kaloudis, Triantafyllos, Theodoros M. Triantis, and Anastasia Hiskia. "Determination of Geosmin and 2-Methylisoborneol in Water by HS-SPME-GC/MS." In Handbook of Cyanobacterial Monitoring and Cyanotoxin Analysis, 469–74. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119068761.ch59.

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Conference papers on the topic "SPME"

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Mascrez, Steve, and Giorgia Purcaro. "Enhance HS-SPME Extraction Kinetics by Vacuum-assisted Headspace and Multi-cumulative Trapping SPME and the Combination of Them for Olive Oil Volatile Profiling." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/zgek9601.

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Headspace solid-phase microextraction (HS-SPME) is a solvent-free sample preparation method widely applied in many fields of applications. This extraction technique is based on the equilibrium between a three-phase system, i.e., sample-headspace-fiber. The required time to reach the equilibrium is not compatible with a large number of samples. Therefore, a compromise between sensitivity and extraction time is usually needed. Two different approaches have been recently proposed to improve the extraction kinetics, namely vacuum-assisted HS-SPME (Vac-HS-SPME) and multi-cumulative trapping SPME (MC-SPME). Vac-HS-SPME showed an increase of extraction yield at a shorter time and milder temperature compared to conventional HS-SPME [1]. Also MC-SPME has the potential to improve the overall sensitivity by using a cumulative shorter extraction time compared to a single long one. Furthermore, this work demonstrated that the level of extractable information was significantly higher when the headspace was not saturated [2].The two different approaches were tested on the capability of profiling the volatiles of extra virgin olive oil. Past and current research efforts focus on unravelling the composition of this informative volatile fraction, so as to understand correlations with quality attributes.In this work, both approaches have been directly compared, as well as combined to investigate their potential and possible synergic effect on the profiling of volatiles in food.[1] S. Mascrez, E. Psillakis and G. Purcaro, Analytica Chimica Acta, 2020, 1103, 106-114.[2] S. Mascrez and G. Purcaro, Analytica Chimica Acta, 2020, 1122, 89-96.
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Barbu, Luminita, and Emilia Teaca. "SAMPLE PREPARATION USING GERSTEL SPME MULTIFIBER EXCHANGE (MFX)." In International Symposium "The Environment and the Industry". National Research and Development Institute for Industrial Ecology, 2018. http://dx.doi.org/10.21698/simi.2018.ab40.

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Peña-Luengas, Sandra L., Jackeline I. Jerez-Rozo, Sandra N. Correa, Nelson E. Peña, and Samuel P. Hernández-Rivera. "Development of SPME-HPLC methodology for detection of nitroexplosives." In Defense and Security Symposium, edited by Russell S. Harmon, J. Thomas Broach, and John H. Holloway, Jr. SPIE, 2007. http://dx.doi.org/10.1117/12.720362.

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Harper, Ross J., Jose R. Almirall, and Kenneth G. Furton. "Discrimination of smokeless powders by headspace SPME-GC-MS and SPME-GC-ECD, and the potential implications upon training canine detection of explosives." In Defense and Security, edited by Edward M. Carapezza. SPIE, 2005. http://dx.doi.org/10.1117/12.603928.

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Perr, Jeannette M., Kenneth G. Furton, and Jose R. Almirall. "Application of a SPME-IMS detection system for explosives detection." In Defense and Security, edited by Edward M. Carapezza. SPIE, 2005. http://dx.doi.org/10.1117/12.605869.

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Alimzhanova, Mereke. "SCREENING OF ENDOCRINE DISRUPTORS IN WATER SAMPLES BY SPME-GC/MS." In 15th International Multidisciplinary Scientific GeoConference SGEM2015. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2015/b52/s20.058.

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Farenzena Sonia and Cristina Ratti. "Aroma Retention during Freeze-Drying of Strawberries as Determined by SPME." In 2001 Sacramento, CA July 29-August 1,2001. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2001. http://dx.doi.org/10.13031/2013.7473.

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Lopetegi, Iker, Gregory L. Plett, M. Scott Trimboli, Josu Yeregui, Laura Oca, Clara Rojas, Eduardo Miguel, and Unai Iraola. "Lithium-ion Battery Aging Prediction with Electrochemical Models: P2D vs SPMe." In 2023 IEEE Vehicle Power and Propulsion Conference (VPPC). IEEE, 2023. http://dx.doi.org/10.1109/vppc60535.2023.10403316.

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Câmara, J., J. C. Marques, R. Perestrelo, F. Rodrigues, L. Oliveira, P. Andrade, and M. Caldeira. "Evaluation of volatile constituents profile in Scotch whisky by SPME/GC-ITMS." In 13th World Congress of Food Science & Technology. Les Ulis, France: EDP Sciences, 2006. http://dx.doi.org/10.1051/iufost:20060924.

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Purcaro, Giorgia. "Enhancing the Performance of SPME for the Fingerprinting of Olive Oil Volatiles." In Virtual 2020 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2020. http://dx.doi.org/10.21748/am20.215.

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Reports on the topic "SPME"

1

Chambers, D. M. PBX 9501 Outgas Analysis by SPME/GC/MS. Office of Scientific and Technical Information (OSTI), December 2000. http://dx.doi.org/10.2172/792331.

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Steven Hawthorne. JV Task 92 - Alcoa/Retec SFE and SPME. Office of Scientific and Technical Information (OSTI), February 2009. http://dx.doi.org/10.2172/990815.

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Alviso, C., C. Harvey, and A. Vance. Recent Applications of SPME in Directed Stockpile Work (FY04). Office of Scientific and Technical Information (OSTI), November 2004. http://dx.doi.org/10.2172/15014713.

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Cornett, C., and J. Wermeling. Detection of Substituted PAH Residues by SPME in Arson Debris. Office of Scientific and Technical Information (OSTI), December 2005. http://dx.doi.org/10.2172/882990.

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Wood, William F., David L. Largent, and Darvin A. DeShazer. The cooked shellfish-odour of the mushroom Russula xerampelina. Verlag der Österreichischen Akademie der Wissenschaften, January 2024. http://dx.doi.org/10.1553/biosystecol.3.e115244.

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The “shrimp mushroom”, Russula xerampelina, has a strong cooked shellfish odour. Headspace volatiles from fresh sporocarps of this mushroom were analysed using solid phase microextraction (SPME) and gas chromatography–mass spectrometry (GC–MS). Trimethylamine and trimethylamine N-oxide were the only volatile compounds detected emanating from the fruiting body. Trime- thylamine is noted for its fishy, cooked crab or cooked shrimp-like odour.
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BENDER, SUSAN FAE ANN, PHILIP J. RODACY, JAMES L. BARNETT, and GARY L. BENDER. Detection of Methyl Salicylate Transforted by Honeybees (Apis mellifera) Using Solid Phase Microextration (SPME) Fibers. Office of Scientific and Technical Information (OSTI), December 2001. http://dx.doi.org/10.2172/789575.

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Gong, Mengyan, and Dustin Poppendieck. Measurement of SVOC emission parameters for building materials using solid-phase microextraction (SPME)-based method. Gaithersburg, MD: National Institute of Standards and Technology, April 2019. http://dx.doi.org/10.6028/nist.tn.2040.

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8

Conrady, Morgan, Markus Bauer, Kyoo Jo, Donald Cropek, and Ryan Busby. Solid-phase microextraction (SPME) for determination of geosmin and 2-methylisoborneol in volatile emissions from soil disturbance. Engineer Research and Development Center (U.S.), October 2021. http://dx.doi.org/10.21079/11681/42289.

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A method is described here for the concentration and determination of geosmin and 2-methylisoborneol (2-MIB) from the gaseous phase, with translation to field collection and quantification from soil disturbances in situ. The method is based on the use of solid-phase microextraction (SPME) fibers for adsorption of volatile chemicals from the vapor phase, followed by desorption into a gas chromatograph-mass spectrometer (GC-MS) for analysis. The use of a SPME fiber allows simple introduction to the GC-MS without further sample preparation. Several fiber sorbent types were studied and the 50/30 μm DVB/CAR/PDMS was the best performer to maximize the detected peak areas of both analytes combined. Factors such as extraction temperature and time along with desorption temperature and time were explored with respect to analyte recovery. An extraction temperature of 30 ◦C for 10 min, with a desorption temperature of 230 ◦C for 4 min was best for the simultaneous analysis of both geosmin and 2-MIB without complete loss of either one. The developed method was used successfully to measure geosmin and 2-MIB emission from just above disturbed and undisturbed soils, indicating that this method detects both compounds readily from atmospheric samples. Both geosmin and 2-MIB were present as background concentrations in the open air, while disturbed soils emitted much higher concentrations of both compounds. Surprisingly, 2-MIB was always detected at higher concentrations than geosmin, indicating that a focus on its detection may be more useful for soil emission monitoring and more sensitive to low levels of soil disturbance.
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Geiger, Stephen C. The Determination of Sediment Polycyclic Aromatic Hydrocarbon (PAH) Bioavailability using Direct Pore Water Analysis by Solid-Phase Microextraction (SPME). Fort Belvoir, VA: Defense Technical Information Center, August 2010. http://dx.doi.org/10.21236/ada603989.

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Lo, Yin-Cheung, Jacek A. Koziel, Lingshuang Cai, Steven J. Hoff, William S. Jenks, and Hongwei Xin. Simultaneous Chemical and Sensory Characterization of VOCs and Semi-VOCs Emitted from Swine Manure Using SPME and Multidimensional Gas Chromatography-Mass Spectrometry-Olfactometry. Ames (Iowa): Iowa State University, January 2007. http://dx.doi.org/10.31274/ans_air-180814-276.

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