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Academic literature on the topic 'Atrazine'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 August 2024

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Journal articles on the topic "Atrazine"

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Solymosi, P., and E. Lehoczki. "Co-Resistance of Atrazine-Resistant Chenopodium and Amaranthus Biotypes to other Photosystem II Inhibiting Herbicides." Zeitschrift für Naturforschung C 44, no. 1-2 (February 1, 1989): 119–27. http://dx.doi.org/10.1515/znc-1989-1-220.

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Abstract Biotypes of Amaranthus retroflexus L ., A. hybridus L., A. bouchonii Thell. and Chenopodium album L. insensitive to atrazine were collected from maize monoculture where atrazine had been applied extensively. Atrazine-resistant biotypes of A. retroflexus and A. hybridus showed phenmedipham and lenacil co-resistance and atrazine-resistant biotype of C. album showed fenuron co-resistance. An atrazin-resistant biotype of A. bouchonii with co-resistance to diuron was not resistant to fenuron, lenacil and phenmedipham.
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Souza, Matheus de Freitas, Ana Claudia Langaro, Ana Beatriz Rocha de Jesus Passos, Hamurábi Anizio Lins, Tatiane Severo Silva, Vander Mendonça, Antônio Alberto da Silva, and Daniel Valadão Silva. "Adsorption mechanisms of atrazine isolated and mixed with glyphosate formulations in soil." PLOS ONE 15, no. 11 (November 25, 2020): e0242350. http://dx.doi.org/10.1371/journal.pone.0242350.

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In Brazil, the atrazine has been applied frequently to join with glyphosate to control resistant biotypes and weed tolerant species to glyphosate. However, there are no studies about atrazine's behavior in soil when applied in admixture with glyphosate. Knowledge of atrazine's sorption and desorption mixed with glyphosate is necessary because the lower sorption and higher desorption may increase the leaching and runoff of pesticides, reaching groundwaters and rivers. Thereby, the objective of this study was to evaluate the adsorption mechanisms of atrazine when isolated and mixed with glyphosate formulations in a Red-Yellow Latosol. The maximum adsorbed amount of atrazine in equilibrium (qe) was not altered due to glyphosate formulations. The time to reach equilibrium was shortest when atrazine was mixed with the Roundup Ready® (te = 4.3 hours) due to the higher adsorption velocity (k2 = 2.3 mg min-1) in the soil. The highest sorption of atrazine occurred when mixed with the Roundup WG®, with the Freundlich sorption coefficient (Kf) equal to 2.51 and 2.43 for both formulation concentrations. However, other glyphosate formulations did not affect the sorption of atrazine. The desorption of atrazine was high for all treatments, with values close to 80% of the initial adsorbed amount, without differences among isolated and mixed treatments. The change in the velocity and capacity of sorption for the atrazine mixed with some glyphosate formulations indicates that further studies should be conducted to identify the mechanisms involved in this process.
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Krutz, L. Jason, Ian C. Burke, Krishna N. Reddy, Robert M. Zablotowicz, and Andrew J. Price. "Enhanced Atrazine Degradation: Evidence for Reduced Residual Weed Control and a Method for Identifying Adapted Soils and Predicting Herbicide Persistence." Weed Science 57, no. 4 (August 2009): 427–34. http://dx.doi.org/10.1614/ws-09-010.1.

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Soilborne bacteria with novel metabolic abilities have been linked with enhanced atrazine degradation and complaints of reduced residual weed control in soils with ans-triazine use history. However, no field study has verified that enhanced degradation reduces atrazine's residual weed control. The objectives of this study were to (1) compare atrazine persistence and prickly sida density ins-triazine-adapted and nonadapted field sites at two planting dates; (2) utilize original and published data to construct a diagnostic test for identifyings-triazine-adapted soils; and (3) develop and validate ans-triazine persistence model based on data generated from the diagnostic test, i.e., mineralization of ring-labeled14C-s-triazine. Atrazine half-life values ins-triazine-adapted soil were at least 1.4-fold lower than nonadapted soil and 5-fold lower than historic estimates (60 d). At both planting dates atrazine reduced prickly sida density in the nonadapted soils (P ≤ 0.0091). Conversely, in thes-triazine-adapted soil, prickly sida density was not different between no atrazine PRE and atrazine PRE at the March 15 planting date (P = 0.1397). A lack of significance in this contrast signifies that enhanced degradation can reduce atrazine's residual control of sensitive weed species. Analyses of published data indicate that cumulative mineralization in excess of 50% of C0after 30 d of incubation is diagnostic for enhanceds-triazine degradation. Ans-triazine persistence model was developed and validated; model predictions for atrazine persistence under field conditions were within the 95% confidence intervals of observed values. Results indicate that enhanced atrazine degradation can decrease the herbicide's persistence and residual activity; however, coupling the diagnostic test with the persistence model could enable weed scientists to identifys-triazine-adapted soils, predict herbicide persistence under field conditions, and implement alternative weed control strategies in affected areas if warranted.
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G., Kiranmayee, Dasari Dedeepya, Aluri Satya Pavani Asritha, Paluru Sri Lakshmi Sowmya, Shanti Silvia Pothuraju, and Meena Vangalapati. "Examining the Role of Material Science in Atrazine Herbicide Biodegradation by Pseudomonas putida MTCC 2252." E3S Web of Conferences 552 (2024): 01041. http://dx.doi.org/10.1051/e3sconf/202455201041.

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Atrazine is a chlorinated herbicide of the triazine class. It is used to prevent pre-emergence broadleaf weeds in crops such as maize (corn), soybean and sugarcane and on turf, such as golf courses and residential lawns. Atrazine's primary manufacturer is Syngenta and it is one of the most widely used herbicides in the United States, Canadian, and Australian agriculture. The bacteria used for the bio degradation of Atrazine is Pseudomonas putida. In this study, we report the biodegradation of Atrazine at high initial concentrations. The biodegradation of this Atrazine was investigated using Pseudomonas putida. For Pseudomonas putida optimization parameters like Contact time, Ph, Initial concentration, Temperature, Inoculum volume, Carbon source, Nitrogen source
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Dan, Hugo de Almeida, Alberto Leão de Lemos Barroso, Lilian Gomes de Moraes Dan, Thiago Rezende Finotti, Cleriston Feldkircher, and Vanessa Soares Santos. "Controle de plantas daninhas na cultura do milho por meio de herbicidas aplicados em pré-emergência." Pesquisa Agropecuária Tropical 40, no. 4 (December 2010): 388–93. http://dx.doi.org/10.1590/s1983-40632010000400017.

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Este trabalho teve por objetivo estimar a eficácia do controle de plantas daninhas na cultura do milho (Zea mays L.), cultivado em sistema plantio direto, em região de Cerrado, por meio da aplicação, em pré-emergência, de herbicidas. Foram realizados dois ensaios, no município de Montevidiu (GO), durante a safra 2007/2008, dispostos em delineamento de blocos ao acaso, com quatro repetições. Foram avaliados os seguintes tratamentos: atrazine (1.600 g ha-1), atrazine + s-metolachor (1.665 g ha-1 + 1.305 g ha-1), s-metolachor (1.680 g ha-1), atrazine + simazine (250 g ha-1 + 250 g ha-1) e testemunha com e sem a presença de plantas daninhas. Aos 28 dias após a aplicação dos tratamentos, constatou-se que os herbicidas atrazine e s-metolachor não foram eficientes no controle de Cenchrus echinatus e Alternanthera tenella, respectivamente. As associações entre os herbicidas atrazina + s-metolachor e atrazine + simazine proporcionaram incrementos significativos no controle de Euphorbia heterophilla e Alternanthera tenella. A presença de plantas daninhas influenciou negativamente na produtividade da cultura.
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Suszek Gonçalves, Morgana, Silvio César Sampaio, Floriano Luiz Suszek, Silvia Renata Machado Coelho, and Isamara Godoi. "ATRAZINE LEACHING IN SOIL SUBMITTED OF SWINE WASTEWATER APPLICATION." IRRIGA 21, no. 1 (June 18, 2018): 131. http://dx.doi.org/10.15809/irriga.2016v21n1p131-139.

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ATRAZINE LEACHING IN SOIL SUBMITTED OF SWINE WASTEWATER APPLICATION MORGANA SUSZEK GONÇALVES1; SILVIO CÉSAR SAMPAIO2; FLORIANO LUIZ SUSZEK2; SILVIA RENATA MACHADO COELHO2 E ISAMARA GODOI2 1Academic Department of Environmental, Federal University of Technology - Paraná, Campo Mourão, Paraná, Brazil, morgana@utfpr.edu.br2Postgraduate Program in Agricultural Engineering, Western Paraná State University, Cascavel, Paraná, Brazil, silvio.sampaio@unioeste.br, flsuszek@hotmail.com, silvia.coelho@unioeste.br, isgodoi@gmail.com 1 ABSTRACT In this study, swine wastewater (SW) effects on atrazine leaching were evaluated. The experiment was conducted in laboratory in Cascavel, Paraná, Brazil, where soil columns filled with samples of a Rhodic Hapludox soil received the application of 2.5 kg ha-1 of atrazine mass and were incubated for seven days according to the following treatments: T1 (Sterile soil + SW ), T2 (Sterile soil + distilled water), T3 (Non sterile soil + SW) and T4 (Non sterile soil + distilled water). In T1 and T3 treatments SW, corresponding to 435 m3 ha-1, was applied, while in T2 and T4 treatments, 421 m3 ha-1 of distilled water was applied. Atrazine leaching tests were conducted for each treatment and the results showed that the application of SW in the soil increased the atrazine leaching in the soil profile, and consequently the risk of contamination of groundwater. Keywords: herbicide, swine slurry, transport. GONÇALVES, M.S; SAMPAIO, S.C.; SUSZEK, F.L.; COELHO, S.R.M.; GODOI, I.LIXIVIAÇÃO DE ATRAZINA EM SOLO SUBMETIDO À APLICAÇÃO DE ÁGUA RESIDUÁRIA DA SUINOCULTURA 2 RESUMO Neste estudo foram avaliados os efeitos da aplicação de água residuária da suinocultura (ARS) na lixiviação de atrazina. O experimento foi conduzido em laboratório em Cascavel, Paraná, Brasil, onde colunas de solo preenchidas com amostras de Latossolo Vermelho distroférrico, receberam a aplicação de 2,5 kg ha-1 de massa de atrazina e foram incubadas durante sete dias de acordo com os seguintes tratamentos: T1 (Solo estéril + ARS); T2 (Solo estéril + água destilada); T3 (Solo não estéril + ARS) e T4 (Solo não estéril + água destilada). Nos tratamentos T1 e T3 foi adicionada ARS, correspondente a 435 m3 ha-1, e nos tratamentos T2 e T4, foram adicionados 421 m3 ha-1 de água destilada. Foram conduzidos ensaios de lixiviação da atrazina para cada tratamento, e os resultados demonstraram que a aplicação de ARS ao solo proporcionou o aumento da lixiviação de atrazina no perfil do solo, e consequentemente a possibilidade de contaminação de águas subterrâneas. Palavras-chave: herbicida, dejeto suíno, transporte.
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A, Revathi, and Pugazhendy K. "Protective effect of Pisonia alba in atrazine toxicityon biochemical marker enzymes in the liver tissue of albino wister rat Rattus norvegicus." International Journal of Zoology and Applied Biosciences 6, no. 6 (December 16, 2021): 270–75. http://dx.doi.org/10.55126/ijzab.2021.v06.i06.035.

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The goal of this study was to see if Pisonia alba might protect the albino wister rat Rattus norvegicus from the herbicide atrazine's toxicity effects on AST, ALT, ACP, and ALP. Rattus norvegicus were inebriated with a sublethal dose of atrazine (0.25 mg of atrazine) for 28 days in this experiment. When compared to the control, the biochemical manufacturing enzymes in the liver were found to be higher. During the treatment of atrazine-intoxicated rats with P. alba, they were returned to a near-normal level (Group III and IV). The outcomes that were noticed were thoroughly explained.
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Stradtman, Sydney C., and Jennifer L. Freeman. "Mechanisms of Neurotoxicity Associated with Exposure to the Herbicide Atrazine." Toxics 9, no. 9 (August 31, 2021): 207. http://dx.doi.org/10.3390/toxics9090207.

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Atrazine is an herbicide commonly used on crops to prevent broadleaf weeds. Atrazine is an endocrine-disrupting chemical mainly targeting the neuroendocrine system and associated axes, especially as a reproductive toxicant through attenuation of the luteinizing hormone (LH). Current regulatory levels for chronic exposure are based on no observed adverse effect levels (NOAELs) of these LH alterations in rodent studies. Atrazine has also been studied for its effects on the central nervous system and neurotransmission. The European Union (EU) recognized the health risks of atrazine exposure as a public health concern with no way to contain contamination of drinking water. As such, the EU banned atrazine use in 2003. The United States recently reapproved atrazine’s use in the fall of 2020. Research has shown that there is a wide array of adverse health effects that are seen across multiple models, exposure times, and exposure periods leading to dysfunction in many different systems in the body with most pointing to a neuroendocrine target of toxicity. There is evidence of crosstalk between systems that can be affected by atrazine exposure, causing widespread dysfunction and leading to changes in behavior even with no direct link to the hypothalamus. The hypothetical mechanism of toxicity of atrazine endocrine disruption and neurotoxicity can therefore be described as a web of pathways that are influenced through changes occurring in each and their multiple feedback loops with further research needed to refine NOAELs for neurotoxic outcomes.
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Sembodo, Dad Resiworo Jekti, Nana Ratna Wati, Herry Susanto, and Sugiatno Sugiatno. "Uji Sifat Campuran Bahan Aktif Atrazin, Nikosulfuron, Mesotrion pada Beberapa Jenis Gulma." JURNAL AGROTROPIKA 23, no. 1 (April 28, 2024): 125. http://dx.doi.org/10.23960/ja.v23i1.8689.

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The aim of this research was to know effectiveness and characteristic of mixing herbicide active ingredients atrazine, mesotrion, and nikosulfuron on several weed specieses. The trial conducted in the green house at South Lampung from December 2021 until February 2022. This Research arranged in a Randomized Completely Design. Treatment consists of four types of herbicides with six level of dosage active ingredient, namely of single herbicides is atrazin 200 g/l (0, 25, 50, 100, 200, and 400 g ha-1), nikosulfuron 20 g/l (0, 2.5, 5.0, 10, 20, and 40 g ha-1), mesotrion 40 g/l (0, 5, 10, 20, 40 and 80 g ha-1), and herbicides combination of atrazine, nikosulfuron, and mesotrion 200/20/40 OD (0, 32.5, 65, 130, 260, and 520 g ha-1). The target weed were 3 type of broadleaves weeds (Ageratum conyzoides, Euphorbia hirta, and Richardia brasiliensis), 3 type of grasses weeds (Digitaria ciliaris, Eleusine indica, and Rottboellia cochinchinensis), and sedges weed (Cyperus rotundus). Multiplicative Survival Model method used in this research because atrazin, nikosulfuron, and mesotrion have different mode of action. Results showed that an active ingredient mixture of atrazin 200 g/l, nikosulfuron 20 g/l, and mesotrion 40 g/l has LD50 expectation value of 155.96 g ha-1 and LD50 treatment of 74.27 g ha-1 with the co-toxicity value was 2.10 (co-toxicity >1), it means that the characteristic oh the herbiscides mixture is synergist or not antagonist. Keywords: herbicide mixture, atrazine, mesotrion, nikosulfuron, LD50, Multiplicative Survival Model
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Sembodo, Dad Resiworo Jekti, and Nana Ratna Wati. "Uji Efektivitas Campuran Herbisida Berbahan Aktif Atrazin dan Topramezon terhadap Beberapa Jenis Gulma." JURNAL AGROTROPIKA 20, no. 2 (October 3, 2021): 93. http://dx.doi.org/10.23960/ja.v20i2.5164.

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The purpose of this study was to determine the effectiveness of mixing herbicides with the active ingredients atrazine and topramezone in controlling weeds and to determine the nature of the mixture of the two active ingredients. This research was conducted in a plastic house in Natar District, South Lampung Regency from October 2020 - January 2021. The study was arranged in a Completely Randomized Design (CRD). The treatments consisted of three types of herbicides with six dosage levels of the active ingredients, namely the single herbicide Atrazine 300 g/l (0, 37.5, 75, 150, 300, and 600 g ai ha-1), Topramezon 10 g/l (0. 1.25 , 2.5, 5, 10, and 20 g ai ha-1), and the herbicide mixture of Atrazine 300 g/l + Topramezone 10 g/l (0. 38.75, 77.50, 155, 310, and 620 g ai ha-1) , and repeated 6 times. The target weeds included broadleaf weeds (Ageratum conyzoides and Synedrella nodiflora), grass groups (Digitaria ciliaris, Echinochloa colonum, and Eleusine indica), and the puzzle group (Cyperus iria). The herbicides atrazine and topramezone have different ways of working so that the analytical method used is the Multiplicative Survival Model (MSM) method. The results showed that mixing the herbicide Atrazine 300 g/l + Topramezon 10 g/l had an expected LD50 value of 46.28 g ai ha-1 and a treatment LD50 of 27.22 g ai ha-1 with a co-toxicity value of 1.7 (Co-toxicity > 1) so that it is synergistic.Key words: Atrazin, Topramezon, mixing herbicide, Multiplicative Survival Model, weed, LD50
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Dissertations / Theses on the topic "Atrazine"

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Allen, David Peter. "Photocatalytic degradation of atrazine." Thesis, University of Bath, 1995. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296324.

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Moreau-Kervévan, Carole. "Adsorption et désorption de l'atrazine, la dééthylatrazine et l'hydroxyatrazine au contact de sols, de solides d'aquifère et de constituants isolés des sols /." Orléans : Éd. BRGM, 1997. http://catalogue.bnf.fr/ark:/12148/cb37023806r.

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Jacomini, Analú Egydio. "Bioacumulação do herbicida atrazina pelas espécies de bivalves limnicos Anodontites trapesialis (Lamarck, 1819) e Corbicula fluminea (Müller, 1774)." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/59/59139/tde-15072003-104821/.

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Inúmeros pesticidas são usados na agricultura, para controle de pragas e ervas daninhas. Dentre eles destaca-se o herbicida atrazina, intensivamente utilizado nas culturas de cana-de-açúcar, milho e sorgo, que ocupam extensas áreas no estado de São Paulo. Grande parcela do herbicida, que é aplicado na agricultura, entra em contato com o solo, podendo ser lixiviado, atingindo as águas superficiais. Neste sentido, alguns animais como, por exemplo, moluscos bivalves, podem ser utilizados como monitores biológicos do ambiente aquático e auxiliar no estudo da ecotoxicologia. Considerando o risco de contaminação do ambiente aquático pela atrazina, propõe-se, no presente trabalho, desenvolver uma metodologia de análise daquele herbicida nos tecidos nas espécies de bivalves límnicos Anodontites trapesialis (LAMARCK, 1819) e Corbicula fluminea (Muller, 1789), validar esse método e, finalmente, verificar se ocorre a bioacumulação do herbicida nas partes moles dessas duas espécies. Como técnica de extração utilizou-se a extração líquido- líquido e como técnica de análise, a cromatografia líquida de alta eficiência (CLAE).
Large amount of pesticides have been used for the control of agriculture pests and weeds. Particularly important among herbicides is atrazine, extensively employed in cultures of sugar cane, corn and sorghum, that occupies an extensive area in São Paulo state. Large portions of atrazine, applied in the agricultural fields, leaches from the soil to surface water systems. In this way, some organisms such as fresh- water mollusks bivalves, can be used as biological monitors of aquatic environments, contributing for ecotoxicology studies. Considering the existence of risk of contamination by atrazine of the aquatic environment, the purpose of this work was, (i) to develop a method for the analysis of atrazine in the fresh- water bivalves species Anodontites trapesialis (LAMARCK, 1819) and Corbicula fluminea (MULLER, 1789), (ii) to validate such method and, (iii) to detect if these organisms can bioaccumulate atrazine in their tissues. This method involved a simple liquid-liquid extraction procedure, followed by high- performance liquid chromatographic analysis (HPLC).
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Wakefield, Rachael Denise. "Atrazine degradation in sub-soils." Thesis, University of Aberdeen, 1992. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU053513.

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Atrazine has been one of the most successful herbicides used both in agriculture and in urban situations. Its use has now been banned in U.K. agriculture. Atrazine applied to agricultural soils has been shown to leach down the profile with residues remaining in the soil up to 9 years after initial application. Residues are frequently found in sub-soils and aquifers world wide. In this study, systems were developed that enabled sampling and incubation of intact sub-soils cores that contained a sub-soil atmosphere. The sub-soil represents the last zone of significant potential degradation of xenobiotics, such as atrazine, as leaching into deeper soils and ground waters occurs. Conditions prevailing in these soils are different in terms of soil atmosphere, structure and activities of the soil microbial community. Laboratory studies were carried out which investigated the rate of atrazine mineralisation in intact sub-soil cores. Soil cores were aerated with either laboratory air or CO2-rich air generated through soil microbial activity from within a sealed sub-soil air reservoir. Results showed that atrazine mineralisation occurred at significantly higher rates in sub-soil cores aerated with sub-soil air compared to the rates in sub-soil cores aerated with laboratory air. Studies comparing mineralisation rates in intact sub-soil cores, incubated under sub-soil air or labroatory air, and soil biometers, containing sieved, mixed sub-soil, showed that higher rates of atrazine mineralisation occurred in the biometer studies than occurred in intact sub-soil cores. Similar studies using intact top-soil cores showed higher rates of mineralisation. Investigations carried out using intact sub-soil cores amended with a range of glucose concentrations, showed that no difference occurred in glucose mineralisation rates between soil cores aerated under sub-soil air and under laboratory air.
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Simões, Marcelo Luiz. "Aplicações de técnicas espectroscópicas e polarográficas para caracterização e avaliação da reatividade do húmus com o herbicida atrazina." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-20052010-165701/.

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Uma alternativa para o destino dos resíduos urbanos é a reciclagem através da compostagem e vermicompostagem (produção de húmus). A falta de padrão de qualidade destes materiais tem prejudicado o desenvolvimento dessa alternativa, tendo prejuízos, produtores e consumidores. Neste trabalho procurou-se parâmetros que pudessem ser utilizados para padronização. Por Ressonância Paramagnética Eletrônica (EPR) as amostras com nível de radicais livres semiquinona de 1017 spin/g de amostra e 1018 spin/g de carbono, ou superior, indicaram melhor qualidade do produto, no que se refere ao grau de humificação. Com o objetivo de avaliar o potencial de sorção do húmus e seu possível efeito catalítico na degradação e fotodegradação do herbicida Atrazina (AT), realizou-se vários experimentos. Resultados de espectroscopia no Ultravioleta e Visível (UV-Vis) mostraram que, para pH\'s próximos do pKa da AT (1,68) o húmus possui similar efeito catalítico que ácidos húmicos e fúlvicos na degradação da AT. Em pH neutro não foi observado degradação da AT, mesmo para altas concentrações de húmus e longos períodos de interação (262 dias). A partir de dados de Polarografia de Pulso Diferencial (PPD) em conjunto com dados de UV-Vis, observou-se uma curva de sorção da AT com máximo (20%) em torno de pH 4,0, decaindo para menos de 5% de sorção para os demais pH\'s utilizados (2,0; 6,0; 7,0; 8,0 e 10,0). Dados de EPR não mostraram reações de transferência de elétrons entre a AT e o húmus. Assim, considerando a forma da curva de sorção, observada por PPD, o mecanismo de reação mais importante entre a AT e o húmus é via ligação hidrofóbica. Experimentos de fotodegradação da AT com luz UV-Vis (300-450 nm) mostraram maior eficiência no processo quando da presença do húmus. Isto ocorreu, provavelmente, devido a ação de agentes fotooxidantes da AT, formados a partir do húmus excitado pela radiação UV. Observou-se também, uma dependência com a concentração de húmus, sendo que, dentro do intervalo de 10 a 1800 mg houve maior fotodegradação da AT para valores em torno de 300 mg.L-1.
One alternative to disposal of urban residues is recycling through composts and earthworm composts (humus production). The absence of a quality standard of these materials however brings limitations to commercial development with damage to producers and consumers. In this work was proposed a strategic parameter to be used as standard. From Electron Paramagnetic Resonance (EPR) analysis samples of humus with level semiquinone free radicals of 1017 spin/g of sample and 1018 spin/g of carbon, or higher, indicated good quality of product, with adequate humification degree. Also were studied mechanisms of interaction between humus and the herbicide Atrazine (AT). The proposal was evaluate potential of AT sorption by humus and possible catalytic effect in the degradation and photodegradation of this herbicide. Data from Ultraviolet and Visible Spectroscopy (UV-Vis) showed that for pH\'s close to AT pKa (1.68) the humus showed catalytic effect in degradation of AT similar as those observed in literature with purified humic and fulvic acids. However for neutra1 pH\'s AT degradation was not observed even in the presence of high humus concentrations and long periods of interaction (262 days). Using Differential Pulse Polarography (DPP), combined with data of UV-Vis Spectroscopy, an AT sorption curve on humus was obtained showing a maximum value of 20% around pH 4.0, decreasing for less than 5% of sorption for other pH\'s analyzed (2.0; 6.0; 7.0; 8.0 and 10.0). Data from EPR gave no evidence of electron transfer reaction. So from the kind of sorption curve, obtained by DPP, the major mechanism of reaction between AT and humus was suggested to be hydrophobic bonding. Experiments of AT photodegradation using UV-Vis light (300-450 nm) showed larger efficiency of the process in the presence of the humus. This occurred probably due action of photo-oxidants on AT, originated from excitation of humus by the UV radiation. It was also observed, dependence with the humus concentration, and in the range 10 to 1800 mg.L-1 there was larger photodegradation of the AT for values around 300 mg.L-1.
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Rayner, Jennifer Leigh Ball Louise M. "Atrazine and rat mammary gland development." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2006. http://dc.lib.unc.edu/u?/etd,516.

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Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2006.
Title from electronic title page (viewed Oct. 10, 2007). "... in partial fulfillment for the requirements for the degree of Doctor of Philosophy in the Department of Environmental Sciences and Engineering." Discipline: Environmental Sciences and Engineering; Department/School: Public Health.
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BOUQUARD, CORINNE. "Etude de la degradation de l'atrazine par une souche de rhizobium sp. Isolee du sol : mise en evidence de la deshalogenation et caracterisation de l'atrazine hydrolase." Besançon, 1997. http://www.theses.fr/1997BESA3705.

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Leme, Paulo Cesar. "Filmes de nanopartículas de dióxido de titânio com undecatungstofosfatomanganês(melamina) e sua reatividade frente à atrazina." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/75/75131/tde-18102010-153108/.

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Neste trabalho buscou-se produzir filmes de nanopartículas de dióxido de titânio e de nanopartículas de dióxido de titânio contendo o complexo sintetizado undecatungstofosfatomanganês(melamina) suportados em cela tubular de vidro borossiliacato e testar sua reatividade como fotocatalisadores frente à atrazina. Os ensaios de fotodegradação da atrazina foram realizados através de um reator fotocatalítico tendo como fonte de irradiação ultravioleta uma lâmpada de vapor de mercúrio de alta pressão de potência de 125 W desprovida do bulbo externo. A degradação da atrazina ocorrida nos experimentos de fotocatálise heterogênea foram acompanhados através da técnica de Espectroscopia de Absorção na Região do Ultravioleta e Visível (UV-vis) e para as amostras inicíais e finais de cada ensaio foram realizadas medidas de teor de Carbono Orgânico Total (TOC). Assim, foi possível estimar a porcentagem de degradação parcial e de mineralização da atrazina. As porcentagens de degradação obtidas para soluções contendo concentração inicial de 10 ppm de atrazina foram: no caso de filmes de nanopartículas de dióxido de titânio, obteve-se porcentagem de degradação parcial da atrazina de 42,2% a partir da análise de UV-vis e 21,8% de mineralização através da análise de TOC. Para o mesmo sistema após 72 horas, as porcentagens de degradação parcial chegaram a 71,5% a partir da análise de UV-vis e 55,5% de mineralização pela análise de TOC. Para o filme de nanopartículas de dióxido de titânio contendo undecatungstofosfatomanganês(melamina) através da técnica de UV-vis obteve-se uma degradação parcial da atrazina de 44,7% ao final de 12 horas e através da análise de TOC obteve-se 22,4% de mineralização.
In this work, films of titanium oxide nanoparticles and of titanium oxide nanoparticles containing the complex undecatungstophosphatemanganese(melamine) immobilized in a borosilicate glass cylindrical cell were prepared and their reactivity as photocatalyst for atrazine were tested. The photodegradation essays of atrazine were made in a phocatalytic reactor where the ultraviolet irradiation source was one mercury vapor lamp of 125 W without the external bulb. The atrazine degradation in heterogeneous photocatalysis experiments were checked by Ultraviolet and visible spectroscopy (UV-vis) and for first and last samples for each essay were made analysis of Total Organic Carbon (TOC). So, it was possible to estimate the percentage of the partial degradation and mineralization of atrazine. The partial degradation percentages obtained for solutions with initial concentration of 10 ppm of atrazine were: In the case for films of titanium oxide nanoparticles, the partial degradation percentage for atrazine was 42,2% in UV-vis analysis and 21,8% of mineralization obtained by TOC analysis. For the same system after 72 hours, the partial degradation percentages were 71,5% in UV-vis analysis and 55,5% of mineralization obtained by TOC analysis. For the film with titanium oxide nanoparticles containing the complex undecatungstophosphatemanganese(melamine), after 12 hours, the partial degradation of atrazine was 44,7% in UV-vis analysis and 22,4% of mineralization obtained by TOC analysis.
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Pearson, Robert. "In situ remediation of atrazine contaminated groundwater." Thesis, Cranfield University, 2006. http://dspace.lib.cranfield.ac.uk/handle/1826/1430.

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The natural attenuation of groundwater pesticides by biological degradation, is widely accepted to occur at concentrations > 1 mg 1-1. However from observations of groundwater monitoring data it can be indicated that the occurrence of pesticides in groundwater is primarily at trace μg 1-1 concentrations, with 45 % of UK groundwater samples that failed the EC Drinking Water Directives PV of 0.1 μg 1-1 between 1995 – 2000, accounting for an average concentration of 64 μg 1-1. However, there are limited directed studies of in situ biological degradation of pesticides at μg concentrations. Therefore, this work was designed provided an insight as to whether any prevalent microbial adaptation can occur to degrade atrazine at μg 1-1 concentrations in groundwater. Laboratory batch studies were performed using a groundwater exposed to 0.2 μg 1-1 of the herbicide atrazine, for an excess of 10 years. Bacterial enrichment using a glucose minimal salts medium resulted in no biological degradation of atrazine, when amended at concentrations between 10 μg to 50 mg 1-1. Batch studies using the atrazine degrader Pseudomonas sp. Strain ADP as a positive control, indicated a capability to degrade atrazine within sterilised groundwater, at 50 mg 1-1 (0.92 mg 1-1 day-1) and 1 mg 1-1 (0.14 mg 1-1 day-1), but no degradation of atrazine at 100 or 10 μg 1-1. Therefore, biological degradation of trace μg 1-1 concentrations of atrazine by groundwater in situ bacteria does not readily occur. It is expected that changes in atrazine groundwater concentrations, are resulting purely from dilution, sorption or chemical degradation. Consequently, it cannot be assumed that microbial adaptation can occur to degrade atrazine at μg 1-1 concentrations in groundwaters even if in situ bioaugmentation methods are applied.
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Albuquerque, Miriam Abreu. "Degradation of atrazine in soil and subsurface." Thesis, University of Reading, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308563.

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Books on the topic "Atrazine"

1

Group, Atrazine Task. Atrazine in surface waters. Washington, D.C.?]: U.S. Dept. of Agriculture, 1992.

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Alfred, Dorsey, United States. Agency for Toxic Substances and Disease Registry., United States. Environmental Protection Agency., and Syracuse Research Corporation, eds. Toxicological profile for atrazine. [Atlanta, Ga.]: Agency for Toxic Substances and Disease Registry, 2003.

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Ribaudo, Marc. Banning atrazine would increase costs to farmers and consumers. [Washington, D.C.]: U.S. Dept. of Agriculture, Economic Research Service, 1994.

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United States. Department of Health and Human Services, United States. Public Health Service, and United States. Agency for Toxic Substances and Disease Registry, eds. Toxicological profile for atrazine: Draft. [Atlanta, Ga.]: U.S. Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry, 2001.

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Aziz, Bouzaher, and United States. Dept. of Agriculture. Economic Research Service., eds. Atrazine: Environmental characteristics and economics of management. [Washington, DC]: U.S. Dept. of Agriculture, Economic Research Service, 1994.

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Ribaudo, Marc. Atrazine: Environmental characteristics and economics of management. [Washington, DC]: U.S. Dept. of Agriculture, Economic Research Service, 1994.

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M, Trotter D., ed. Canadian water quality guidelines for Atrazine. Ottawa, Ont: Inland Waters Directorate, Water Quality Branch, 1990.

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Hepel, Maria. Interactions of herbicide atrazine with DNA. Hauppauge, N.Y: Nova, 2010.

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Sinclair, Jim. Biodegradation of atrazine in subsurface environments. Ada, OK: U.S. Environmental Protection Agency, Robert S. Kerr Environmental Research Laboratory, 1992.

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Environmental Research Center (Tennessee Valley Authority), ed. Toxicity and physical properties of atrazine and its degradation products: A literature survey. Muscle Shoals, Ala: Environmental Research Center, TVA, 1994.

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Book chapters on the topic "Atrazine"

1

Loosli, Rolf. "Epidemiology of Atrazine." In Reviews of Environmental Contamination and Toxicology, 47–57. New York, NY: Springer New York, 1995. http://dx.doi.org/10.1007/978-1-4612-2542-3_2.

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Lin, Chung-Ho, Brian M. Thompson, Hsin-Yeh Hsieh, and Robert N. Lerch. "Introduction of Atrazine Degrader To Enhance Rhizodegradation of Atrazine." In ACS Symposium Series, 139–54. Washington, DC: American Chemical Society, 2011. http://dx.doi.org/10.1021/bk-2011-1075.ch010.

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Kruger, Ellen L., and Joel R. Coats. "Fate of Atrazine and Atrazine Degradates in Soils of Iowa." In Herbicide Metabolites in Surface Water and Groundwater, 140–50. Washington, DC: American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0630.ch012.

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Topp, Edward, Fabrice Martin-Laurent, Alain Hartmann, and Guy Soulas. "Bioremediation of Atrazine-Contaminated Soil." In ACS Symposium Series, 141–54. Washington, DC: American Chemical Society, 2003. http://dx.doi.org/10.1021/bk-2004-0863.ch011.

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Nurizzo, C. "Purification of Groundwaters Polluted by Atrazine." In Environmental Toxicology, Economics and Institutions, 141–50. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0968-0_6.

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Eldridge, J. Charles, James T. Stevens, and Charles B. Breckenridge. "Atrazine Interaction with Estrogen Expression Systems." In Reviews of Environmental Contamination and Toxicology, 147–60. New York, NY: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-78444-1_6.

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Ma, Liwang, and H. M. Selim. "Atrazine Retention and Transport in Soils." In Reviews of Environmental Contamination and Toxicology, 129–73. New York, NY: Springer New York, 1996. http://dx.doi.org/10.1007/978-1-4612-2354-2_2.

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Pugh, Kathleen C., Douglas J. Kiserow, Jack M. Sullivan, and John H. Grinstead. "Photocatalytic Destruction of Atrazine Using TiO2Mesh." In Emerging Technologies in Hazardous Waste Management V, 174–94. Washington, DC: American Chemical Society, 1995. http://dx.doi.org/10.1021/bk-1995-0607.ch015.

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Laird, David A. "Interactions Between Atrazine and Smectite Surfaces." In Herbicide Metabolites in Surface Water and Groundwater, 86–100. Washington, DC: American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0630.ch008.

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Wackett, Lawrence P., Michael J. Sadowsky, Mervyn de Souza, and Raphi T. Mandelbaum. "Atrazine Hydrolysis by a Bacterial Enzyme." In ACS Symposium Series, 82–87. Washington, DC: American Chemical Society, 1998. http://dx.doi.org/10.1021/bk-1998-0683.ch007.

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Conference papers on the topic "Atrazine"

1

Reátegui, Eduardo, Erik Reynolds, Lisa Kasinkas, Amit Aggarwal, Michael J. Sadowsky, Alptekin Aksan, and Lawrence P. Wackett. "Reactive Biomaterial for the Treatment of Herbicide Contaminated Drinking Water: Atrazine Dechlorination." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80205.

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The herbicide atrazine is used for control of broadleaf weeds, principally in corn, sorghum, and sugarcane [1]. Atrazine is currently used in 70 countries at an estimated annual rate of 111,000 tons [2, 3]. Atrazine is typically applied early in the planting season. However, Heavy rainfall events, shortly after application may lead to detectable atrazine concentrations in waterways and in drinking-water supplies. The United States Environmental Protection Agency established a 3 ppb limit of atrazine in drinking water. In some instances, municipal water treatment plants use chemicals and other treatment processes, such as activated carbon, to reduce atrazine to below the 3 ppb legal limit for drinking water.
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Mala, Jitka, Kristina Panikova, and Zuzana Bilkova. "ATRAZINE UNDER DENITRIFYING CONDITIONS." In 22nd International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022v/3.2/s12.03.

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The use of pesticides has negative effects on the quality of groundwater. The triazine pesticide atrazine has not been applied to soil in agriculturally used areas of the Czech Republic for many years, yet atrazine and its metabolites are detected in groundwater throughout the country. The effect of these substances on the denitrification process that takes place in groundwater is unclear. This study aims to examine the behavior of atrazine under denitrifying conditions and the pesticide�s effect on the denitrification process. 7-day and 28-day laboratory tests at a concentration of 100 ?g/L atrazine were performed to simulate such conditions. A single dose of atrazine was introduced to the samples at the beginning of the tests. No inhibition of the denitrification process was detected in any of the tests. Stimulation of denitrification was measured in the last week of the 28-day test. Adsorption on poplar shavings was the dominant process of the decrease in atrazine concentration during both the 7- and 28-day tests. The biotic loss was 3.9% for the 7-day test. In the 28-day test, there was a total biotic loss of 12.1%. A similar biotic loss of 9.8% was measured also in a 7-day test performed at higher pH. At the end of the 28-day test, the transformation product atrazine-2-hydroxy was detected in the supernatant in very low concentrations. A significant effect of the HgCl2 inhibitor on the instantaneous adsorption rate was observed for all tests.
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Ma, Yuexuan, Zhao Jiang, Yao Ma, Juan Du, and Ying Zhang. "Combined Bioremediation of Atrazine Contaminated Soil by Two Atrazine Degrading Strains and Grass." In 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5517374.

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Brown, Shalana L. "Photocatalytic Treatment of Atrazine-Contaminated Water." In World Environmental and Water Resources Congress 2006. Reston, VA: American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40856(200)458.

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CAMPANELLA, L., D. LELO, E. MARTINI, and M. TOMASSETTI. "NEW IMMUNOSENSORS FOR ATRAZINE PESTICIDE DETERMINATION." In Proceedings of the 13th Italian Conference. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812835987_0008.

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Ge, Ming, Assaf Azouri, Kun Xun, Klaus Sattler, Joe Lichwa, and Chittaranjan Ray. "Solar Photocatalytic Degradation of Atrazine in Water by TiO2/Ag Nanocomposite." In ASME 2006 Multifunctional Nanocomposites International Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/mn2006-17070.

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One of the most common herbicides in the world, Atrazine, was used as a model pollutant in this study. The photocatalytic activities of the nanocomposite of TiO2/Ag, with nanopaticles of TiO2 and Ag, were investigated by photodegradation of atrazine under the natural sun. It was found that the efficiency of solar-photocatalytic activity was increased significantly by using the nanocomposites of TiO2/Ag, compared to the use of TiO2 alone. The mechanism of the TiO2/Ag composite for enhancement of photocatalytic activity was elucidated in this work.
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Zhang, Ying, Chunyan Li, Zhuo Diao, Shuyan Ma, and Yao Ma. "Immobilized Atrazine Degrading Bacteria by Different Material." In 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5517415.

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Saavedra, Andrea E., Javier M. Gonzalez, and Laura L. Sanders. "EVALUATING ATRAZINE SORPTION BY CHAR-LIKE MATERIAL." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-340605.

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Jincheng Yao, Qiaoyun Guo, Shumin Niu, and Baoli Cai. "Biodegradation of atrazine and bioremediation of atrazine- contaminated soil by two groups of mixed bacteria and bacterial consortium." In 2011 International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2011. http://dx.doi.org/10.1109/rsete.2011.5965397.

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"IMMUNOSENSORS FOR ATRAZINE DETECTION IN RED WINE SAMPLES." In International Conference on Biomedical Electronics and Devices. SciTePress - Science and and Technology Publications, 2009. http://dx.doi.org/10.5220/0001542002260230.

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Reports on the topic "Atrazine"

1

Wackett, Lawrence, Raphi Mandelbaum, and Michael Sadowsky. Bacterial Mineralization of Atrazine as a Model for Herbicide Biodegradation: Molecular and Applied Aspects. United States Department of Agriculture, January 1999. http://dx.doi.org/10.32747/1999.7695835.bard.

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Atrazine is a broadly used herbicide in agriculture and it was used here as a model to study the biodegradation of herbicides. The bacterium Pseudomonas sp. ADP metabolizes atrazine to carbon dioxide and ammonia and chloride. The genes encoding atrazine catabolism to cyanuric acid were cloned and expressed in Escherichia coli. The genes were designated atzA, atzB and atzC. Each gene was sequenced. The enzyme activities were characterized. AtzA is atrazine chlorohydrolase which takes atrazine to hydroxyatrizine. AtzB is hydroxyatrazine N-ethylaminohydrolase which produces N-isopropylammelide and N-ethylamine. AtzC is N-isopropylammelide N-isopropylaminohydrolase which produces cyanuric acid and N-isopropylamine. Each product was isolated and characterized to confirm their identity by chromatography and mass spectrometry. Sequence analysis indicated that each of the hydrolytic enzymes AtzA, AtzB and AtzC share identity which the aminohydrolase protein superfamily. Atrazine chlorohydrolase was purified to homogeneity. It was shown to have a kcat of 11 s-1 and a KM of 150 uM. It was shown to require a metal ion, either Fe(II), Mn(II) or Co(II), for activity. The atzA, atzB and atzC genes were shown to reside on a broad-host range plasmid in Pseudomonas sp. ADP. Six other recently isolated atrazine-degrading bacteria obtained from Europe and the United States contained homologs to the atz genes identified in Pseudomonas sp. ADP. The identity of the sequences were very high, being greater than 98% in all pairwise comparisons. This indicates that many atrazine-degrading bacteria worldwide metabolize atrazine via a pathway that proceeds through hydroxyatrazine, a metabolite which is non-phytotoxic and non-toxic to mammals. Enzymes were immobilized and used for degradation of atrazine in aqueous phases. The in-depth understanding of the genomics and biochemistry of the atrazine mineralization pathway enabled us to study factors affecting the prevalence of atrazine degradation in various agricultural soils under conservative and new agricultural practices. Moreover, Pseudomonas sp. ADP and/or its enzymes were added to atrazine-contaminated soils, aquifers and industrial wastewater to increase the rate and extent of atrazine biodegradation above that of untreated environments. Our studies enhance the ability to control the fate of regularly introduced pesticides in agriculture, or to reduce the environmental impact of unintentional releases.
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Wilhelms, Kelly, Sara Cutler, John Proudman, and Colin G. Scanes. Atrazine and the Hypothalamo-Pituitary-Gonadal Axis in Sexually Maturing Precocial Birds. Ames (Iowa): Iowa State University, January 2006. http://dx.doi.org/10.31274/ans_air-180814-635.

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Pugh, K. C. Toxicity and physical properties of atrazine and its degradation products: A literature survey. Office of Scientific and Technical Information (OSTI), October 1994. http://dx.doi.org/10.2172/10190387.

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Wilhelms, Kelly W., Katie F. Fitzpatrick, Colin G. Scanes, and Lloyd L. Anderson. In Ovo Exposure to Atrazine on Circulating Reproductive Hormones and Gonadal Histology in Japanese Quail. Ames (Iowa): Iowa State University, January 2010. http://dx.doi.org/10.31274/ans_air-180814-761.

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NIOSH skin notation profile: atrazine. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, January 2019. http://dx.doi.org/10.26616/nioshpub2019117.

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Probability of detecting atrazine/desethyl-atrazine and elevated concentrations of nitrate in ground water in Colorado. US Geological Survey, 2003. http://dx.doi.org/10.3133/wri024269.

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Vulnerability of ground water to atrazine leaching in Kent County, Michigan. US Geological Survey, 1997. http://dx.doi.org/10.3133/wri964198.

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Liquid chromatographic determination of atrazine and its degradation products in water. US Geological Survey, 1990. http://dx.doi.org/10.3133/wri894193.

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Probability of detecting atrazine/desethyl-atrazine and elevated concentrations of nitrate plus nitrate as nitrogen in ground water in the Idaho part of the western Snake River Plain. US Geological Survey, 2000. http://dx.doi.org/10.3133/wri004163.

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Probability of detecting atrazine/desethyl-atrazine and elevated concentrations of nitrate (NO2+NO3-N) in ground water in the Idaho part of the upper Snake River basin. US Geological Survey, 1998. http://dx.doi.org/10.3133/wri984203.

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