Relevant bibliographies by topics / Pesticide transformation product

Academic literature on the topic 'Pesticide transformation product'

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Published: 9 March 2023
Last updated: 10 March 2023

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Journal articles on the topic "Pesticide transformation product"

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Warner, Kelly L., and William S. Morrow. "Pesticide and Transformation Product Detections and Age-Dating Relations from Till and Sand Deposits." Journal of the American Water Resources Association 43, no. 4 (August 2007): 911–22. http://dx.doi.org/10.1111/j.1752-1688.2007.00067.x.

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Benfeito, Sofia, Tiago Silva, Jorge Garrido, Paula B. Andrade, M. J. Sottomayor, Fernanda Borges, and E. Manuela Garrido. "Effects of Chlorophenoxy Herbicides and Their Main Transformation Products on DNA Damage and Acetylcholinesterase Activity." BioMed Research International 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/709036.

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Persistent pesticide transformation products (TPs) are increasingly being detected among different environmental compartments, including groundwater and surface water. However, there is no sufficient experimental data on their toxicological potential to assess the risk associated with TPs, even if their occurrence is known. In this study, the interaction of chlorophenoxy herbicides (MCPA, mecoprop, 2,4-D and dichlorprop) and their main transformation products with calf thymus DNA by UV-visible absorption spectroscopy has been assessed. Additionally, the toxicity of the chlorophenoxy herbicides and TPs was also assessed evaluating the inhibition of acetylcholinesterase activity. On the basis of the results found, it seems that AChE is not the main target of chlorophenoxy herbicides and their TPs. However, the results found showed that the transformation products displayed a higher inhibitory activity when compared with the parent herbicides. The results obtained in the DNA interaction studies showed, in general, a slight effect on the stability of the double helix. However, the data found for 4-chloro-2-methyl-6-nitrophenol suggest that this transformation product can interact with DNA through a noncovalent mode.
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Gassmann, M., O. Olsson, C. Stamm, M. Weiler, and K. Kümmerer. "Physico-chemical characteristics affect the spatial distribution of pesticide and transformation product loss to an agricultural brook." Science of The Total Environment 532 (November 2015): 733–43. http://dx.doi.org/10.1016/j.scitotenv.2015.06.068.

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Campos-Mañas, Marina Celia, Patricia Plaza-Bolaños, Ana Belén Martínez-Piernas, José Antonio Sánchez-Pérez, and Ana Agüera. "Determination of pesticide levels in wastewater from an agro-food industry: Target, suspect and transformation product analysis." Chemosphere 232 (October 2019): 152–63. http://dx.doi.org/10.1016/j.chemosphere.2019.05.147.

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Fenner, Kathrin, Silvio Canonica, Lawrence P. Wackett, and Martin Elsner. "Evaluating Pesticide Degradation in the Environment: Blind Spots and Emerging Opportunities." Science 341, no. 6147 (August 15, 2013): 752–58. http://dx.doi.org/10.1126/science.1236281.

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The benefits of global pesticide use come at the cost of their widespread occurrence in the environment. An array of abiotic and biotic transformations effectively removes pesticides from the environment, but may give rise to potentially hazardous transformation products. Despite a large body of pesticide degradation data from regulatory testing and decades of pesticide research, it remains difficult to anticipate the extent and pathways of pesticide degradation under specific field conditions. Here, we review the major scientific challenges in doing so and discuss emerging opportunities to identify pesticide degradation processes in the field.
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Singh, Pardeep, Pradipkumar Adhale, Amit Guleria, Priya Brata Bhoi, Akash Kumar Bhoi, Manlio Bacco, and Paolo Barsocchi. "Crop Diversification in South Asia: A Panel Regression Approach." Sustainability 14, no. 15 (July 30, 2022): 9363. http://dx.doi.org/10.3390/su14159363.

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The South Asian agricultural sector has experienced vigorous growth and structural transformation over the last few decades, albeit differently across the region. This study examines the crop diversification status and various determinants, such as socioeconomic (per capita gross domestic product, population, arable land, and cropland), soil/agronomic (root zone moisture), agricultural inputs (fertilizer and pesticide consumption), the productivity of food and non-food crops, international trade, and climate (maximum and minimum temperature and rainfall) factors. The share of cereals has decreased in most countries, but they continue to dominate South Asian agriculture. The area under high-value crops in India has increased significantly, replacing the area under cereal cultivation during the study period. Similar results were seen in the Maldives, where vegetables replaced oilseeds. The Hausman model test suggested a random-effects model for analyzing the determinants. All the determinants considered in the study explain 69 percent of the variation in the crop diversification index. The crop diversification in South Asia was influenced by per capita gross domestic product (G.D.P.), minimum temperature, pesticide consumption, food crop yield index, and non-food crop yield index during the study period. Cropland percentage and population, on the other hand, reduce crop diversification. The price factor contributed more than half to agricultural growth. It remained the primary source of growth in all South Asian countries, followed by yield, which is identified as the second most crucial factor. The contribution of crop diversification to agricultural growth has been declining over time.
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Feng, Chao, Qian Xu, Xinlei Qiu, Yu'e Jin, Jieyun Ji, Yuanjie Lin, Sunyang Le, et al. "Profiling of pesticides and pesticide transformation products in Chinese herbal teas." Food Chemistry 383 (July 2022): 132431. http://dx.doi.org/10.1016/j.foodchem.2022.132431.

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Hernández-Mesa, Maykel, and David Moreno-González. "Current Role of Mass Spectrometry in the Determination of Pesticide Residues in Food." Separations 9, no. 6 (June 9, 2022): 148. http://dx.doi.org/10.3390/separations9060148.

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The extensive use of pesticides represents a risk to human health. Consequently, legal frameworks have been established to ensure food safety, including control programs for pesticide residues. In this context, the performance of analytical methods acquires special relevance. Such methods are expected to be able to determine the largest number of compounds at trace concentration levels in complex food matrices, which represents a great analytical challenge. Technical advances in mass spectrometry (MS) have led to the development of more efficient analytical methods for the determination of pesticides. This review provides an overview of current analytical strategies applied in pesticide analysis, with a special focus on MS methods. Current targeted MS methods allow the simultaneous determination of hundreds of pesticides, whereas non-targeted MS methods are now applicable to the identification of pesticide metabolites and transformation products. New trends in pesticide analysis are also presented, including approaches for the simultaneous determination of pesticide residues and other food contaminants (i.e., mega-methods), or the recent application of techniques such as ion mobility–mass spectrometry (IM–MS) for this purpose.
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Rousis, Nikolaos, Maria Denardou, Nikiforos Alygizakis, Aikaterini Galani, Anna Bletsou, Dimitrios Damalas, Niki Maragou, Kevin Thomas, and Nikolaos Thomaidis. "Assessment of Environmental Pollution and Human Exposure to Pesticides by Wastewater Analysis in a Seven-Year Study in Athens, Greece." Toxics 9, no. 10 (October 11, 2021): 260. http://dx.doi.org/10.3390/toxics9100260.

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Pesticides have been used in large amounts around the world for decades and are responsible for environmental pollution and various adverse effects on human health. Analysis of untreated wastewater can deliver useful information on pesticides’ use in a particular area and allow the assessment of human exposure to certain substances. A wide-scope screening method, based on liquid chromatography coupled to quadrupole-time-of-flight mass spectrometry, was applied, using both target and suspect screening methodologies. Daily composite influent wastewater samples were collected for seven or eight consecutive days in Athens between 2014 and 2020 and analyzed for 756 pesticides, their environmental transformation products and their human metabolites. Forty pesticides were quantified at mean concentrations up to 4.9 µg/L (tralkoxydim). The most abundant class was fungicides followed by herbicides, insect repellents, insecticides and plant growth regulators. In addition, pesticide transformation products and/or metabolites were detected with high frequency, indicating that research should be focused on them. Human exposure was evaluated using the wastewater-based epidemiology (WBE) approach and 3-ethyl-carbamoyl benzoic acid and cis-1,2,3,6-tetrahydrophthalimide were proposed as potential WBE biomarkers. Wastewater analysis revealed the presence of unapproved pesticides and indicated that there is an urgent need to include more transformation products in target databases.
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Tao, Yufeng, Jing Liu, Yiwen Xu, Hang Liu, Guiling Yang, Yan He, Jianming Xu, and Zhijiang Lu. "Suspecting screening “known unknown” pesticides and transformation products in soil at pesticide manufacturing sites." Science of The Total Environment 808 (February 2022): 152074. http://dx.doi.org/10.1016/j.scitotenv.2021.152074.

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Dissertations / Theses on the topic "Pesticide transformation product"

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Sinclair, Christopher John. "Predicting the environmental fate and ecotoxicological and toxicological effects of pesticide transformation products." Thesis, University of York, 2009. http://etheses.whiterose.ac.uk/14225/.

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Following the application of pesticides during normal agricultural practice these compounds can degrade to form transformation products. When assessing the risks posed by pesticides it is important to include any additional risks posed by these compounds. Current guidance within the EU suggests that data requirements for transformation products during the risk assessment do not necessarily need to be addressed with experimental studies but alternative techniques can be explored and used. Therefore the aim of this research was to investigate and develop pragmatic approaches for assessing the fate and effects of transformation products in the absence of experimentally determined data. Approaches designed to provide information on the physico-chemical properties, environmental parameters, ecotoxicology and toxicology of pesticide transformation products are explored and evaluated, and recommendations made on how to obtain the most appropriate estimates of these factors. Hydrophobicity, dissociation constant, soil sorption, daphnid aquatic ecotoxicology and rat oral lethality can all be estimated with confidence. Moreover, approaches were developed to I) indicate whether a transformation product may exhibit pesticidal activity and subsequently estimate its acute aquatic ecotoxicity in the absence of experimental data, 2) combine well known techniques and experimental data to obtain estimates of transformation product mutagenicity with limited risk of obtaining false negatives and 3) prioritise transformation products of most concern to drinking water supplies and its consumers. Overall, recommendations are made throughout this thesis on appropriate approaches and methods for generating estimates of transformation product properties, ecotoxicity and toxicity for use in risk assessment and prioritisation frameworks.
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BENVENUTO, FEDERICA. "Integrated study of chemical, hydrological and biological aspects of impaired rivers to support restoration strategies." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2009. http://hdl.handle.net/10281/7504.

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The human presence and activities affect the environmental quality of water bodies in different ways. Pressures concern various aspects of the overall environmental quality and their effects are cumulative and synergic. That’s why an integrated approach is needed to understand and assess the importance of each kind of stressors and to define restoration strategies. The research work carried out in the last three years and shown in this thesis concerns impaired river ecosystems and includes, in particular: 1) Integrated study of chemical, hydrological and biological aspects of impaired rivers, especially those affected by multiple alterations in urban environments and, thus, wastewater treatment plant effluent dominated. A case study (Lura stream) is presented. 2) Development of analytical methods for determining organic micropollutants (PAHs, triazines and their main transformation products) in a wide range of surface and wastewater samples (coming from different environments in Italy and Spain) and, consequently, for evaluating the contamination from wastewater treatment plant discharges. 3) Evaluation of the organic micropollutant removal efficiencies of wastewater treatment plants and comparison of the concentrations measured in effluent samples to the environmental quality objectives fixed for surface waters, as most of the receptor flow is made by the discharged effluent itself. 4) Study of the performance of a demonstration scale constructed wetland in removing inorganic and organic contamination from wastewater treatment plant effluents, as a possible strategy for impaired river restoration.
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Mekonnen, Tessema Fenta. "Investigating Biotic and Abiotic Transformation Processes of Selected Pesticides Using Electrochemistry Coupled to Mass Spectrometry." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/19968.

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In der Entwicklung neuer Agrochemikalien ist es essentiell das weitere Schicksal im Bezug zum Abbau durch abiotische und biotische Einflüsse vorherzusagen. Pestizide gehören zu den Agrochemikalien und durch abiotischen und biotischen Stress werden Transformationsprodukte (TPs) gebildet. Daher ist es von Bedeutung, die TPs von Pestiziden und deren Entstehungsprozess zu untersuchen. Diese Dissertation beschäftigt sich mit biotischen und abiotischen Umwandlungsprozessen von zwei Modell-Pestiziden, nämlich Chlorpyrifos (ein Insektizid) und Fluopyram (ein Fungizid) unter Verwendung von Modellsystemen. Lebermikrosomeninkubation und elektrochemische Durchflusszellen, die an Online-Massenspektrometrie gekoppelt waren, wurden als experimenteller Modellansatz zu untersuchen um die Biotransformationsprozesse (phase I und phase II) der Ziel-Pestizide. Im zweiten Teil dieser Arbeit, wurden Photodegradationsprodukte der beiden Modellverbindungen durch Bestrahlung mit keimtötendem ultraviolettem Licht (200 - 280 nm) untersucht. Im letzten Teil dieser Arbeit wurde die Elektrochemie-Massenspektrometrie auf die Herstellung von Referenzstandards für Transformationsprodukte für das gezielte Screening in Lebensmittelproben ausgedehnt. Die strukturelle Aufklärung der Transformationsprodukte erfolgte mittels HPLC, gekoppelt an verschiedene Massenspektrometrietechniken (Single Quad, Triple Quad, FT-ICR HRMS, Triple TOF-MS, Orbitrap HRMS). Zusammenfassend konnte die Kopplung von EC/(LC)/MS als schnelle, zuverlässige, kostengünstige und matrix-unabhängige Methode genutzt werden, um den oxidativen Phase-I und II Metabolismus von Fluopyram und Chlorpyrifos zu simulieren. EC/MS könnte weiterhin zur Synthese von TP Referenzstandards und zur Messung von Realproben genutzt werden. Neue TPs und deren Bildungsmechanismen konnten im Rahmen dieser Dissertation für beide untersuchten Substanzen identifiziert werden.
One of the crucial steps of developing a new agrochemical product is predicting its fate following biotic or abiotic stress. In this regard, pesticides undergo transformation processes in response to biotic and abiotic stress. Therefore, it is important to investigate pesticides’ transformation products (TPs) and the formation processes they undergo. This dissertation deals on biotic and abiotic transformation processes of two model pesticides namely chlorpyrifos (an insecticide) and fluopyram (a fungicide) using model systems. Liver microsome incubation and electrochemical-flow-through cell coupled to online mass spectrometry were used as a model experimental approach to investigate phase I and phase II biotransformation processes of the targeted pesticides. In the second part of this thesis, photodegradation products of the two model compounds were investigated by irradiating with germicidal ultraviolet light (200 – 280 nm). In the last part of this work, electrochemistry-mass spectrometry was scaled-up to the production of transformation product reference standards for targeted screening in different food samples. Structural elucidations of transformation products were performed using HPLC coupled to different mass spectrometry techniques (single quad, triple quad, FT-ICR HRMS, TripleTOF-MS, Orbitrap HRMS). In summary, a fast, reliable, cost-effective and matrix-free simulation of oxidative metabolism (phase I and II) of fluopyram and chlorpyrifos was achieved here by EC/(LC)/MS. EC/MS could, therefore, be scaled up to synthesis TP reference standards for real sample investigation. Additionally, new TPs and their mechanisms were identified for both investigated compounds.
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Books on the topic "Pesticide transformation product"

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Somasundaram, L., and Joel R. Coats, eds. Pesticide Transformation Products. Washington, DC: American Chemical Society, 1991. http://dx.doi.org/10.1021/bk-1991-0459.

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1961-, Somasundaram L., Coats Joel R, American Chemical Society. Division of Agrochemicals., and American Chemical Society Meeting, eds. Pesticide transformation products: Fate and significance in the environment. Washington, DC: American Chemical Society, 1991.

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Pesticide transformation products: Fate and significance in the environment. Washington, DC: American Chemical Society, 1991.

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(Editor), L. Somasundaram, and Joel R. Coats (Editor), eds. Pesticide Transformation Products: Fate and Significance in the Environment (Acs Symposium Series). An American Chemical Society Publication, 1998.

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Book chapters on the topic "Pesticide transformation product"

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Somasundaram, L., and Joel R. Coats. "Pesticide Transformation Products Research." In ACS Symposium Series, 285–88. Washington, DC: American Chemical Society, 1991. http://dx.doi.org/10.1021/bk-1991-0459.ch020.

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Somasundaram, L., and Joel R. Coats. "Pesticide Transformation Products in the Environment." In ACS Symposium Series, 2–9. Washington, DC: American Chemical Society, 1991. http://dx.doi.org/10.1021/bk-1991-0459.ch001.

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Day, Kristin E. "Pesticide Transformation Products in Surface Waters." In ACS Symposium Series, 217–41. Washington, DC: American Chemical Society, 1991. http://dx.doi.org/10.1021/bk-1991-0459.ch016.

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Agüera López, Ana, María del Mar Gómez Ramos, and Amadeo R. Fernández-Alba. "Transformation Products of Pesticides in the Environment: Analysis and Occurrence." In Transformation Products of Emerging Contaminants in the Environment, 385–412. Chichester, United Kingdom: John Wiley and Sons Ltd, 2014. http://dx.doi.org/10.1002/9781118339558.ch13.

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Konstantinou, Ioannis, Dimitra Hela, Dimitra Lambropoulou, and Triantafyllos Albanis. "Monitoring and Assessment of Pesticides and Transformation Products in the Environment." In Analysis of Pesticides in Food and Environmental Samples, 365–414. Second edition. | Boca Raton : Taylor & Francis, a CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T&F Informa, plc, 2019.: CRC Press, 2019. http://dx.doi.org/10.1201/9781351047081-12.

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Konstantinou, Ioannis K. "Mass Spectrometric Techniques for the Determination of Pesticide Transformation Products Formed by Advanced Oxidation Processes." In Mass Spectrometry for the Analysis of Pesticide Residues and Their Metabolites, 231–62. Hoboken, NJ: John Wiley & Sons, Inc, 2015. http://dx.doi.org/10.1002/9781119070771.ch10.

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Ferrer, Imma, Jerry A. Zweigenbaum, and E. Michael Thurman. "Identification of Pesticide Transformation Products in Food Applying High-Resolution Mass Spectrometry." In Applications in High Resolution Mass Spectrometry, 315–35. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-12-809464-8.00010-5.

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Bianchi, Thomas S., and Elizabeth A. Canuel. "Anthropogenic Markers." In Chemical Biomarkers in Aquatic Ecosystems. Princeton University Press, 2011. http://dx.doi.org/10.23943/princeton/9780691134147.003.0014.

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This chapter examines the application of anthropogenic compounds as biomarkers. Since World War II, human activities have introduced a wide array of compounds into the environment, including insecticides such as dichloro-diphenyl-trichloroethane and pesticides, halocarbons (chlorofluorocarbons), sewage products (coprostanol), and polycyclic aromatic hydrocarbons (PAHs). The chapter introduces structural features of these compounds, their distribution and transformation in the environment, and their potential use(s) as tracers. It presents examples of how relationships between anthropogenic markers and biomarkers can be used to provide information about the sources, delivery, and fate of natural organic matter in aquatic ecosystems. It introduces various emerging contaminants (personal care pharmaceutical products, caffeine, and flame retardants) and their potential use as tracers for anthropogenic organic matter in aquatic ecosystems. It describes how δ‎13C, stable isotopes of Cl and Br, and radiocarbon can be used to apportion sources of organic contaminants (e.g., PAHs and PCBs).
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Honing, M., D. Barceló, B. L. M. van Baar, and U. A. Th Brinkman. "22. Sample handling and determination of carbamate pesticides and their transformation products in various matrices." In Quality Assurance for Environmental Analysis - Method Evaluation within the Measurements and Testing Programme (BCR), 535–62. Elsevier, 1995. http://dx.doi.org/10.1016/s0167-9244(06)80023-5.

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Barceló, D. "Chapter 4 Sample handling and analysis of pesticides and their transformation products in water matrices by liquid chromatographic techniques." In Sample handling and trace analysis of pollutants - Techniques, applications and quality assurance, 155–207. Elsevier, 2000. http://dx.doi.org/10.1016/s0167-9244(00)80010-4.

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