Clay And Organic Matter Contributions To The Sorption Of Nonionic Pesticides
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Clay And Organic Matter Contributions To The Sorption Of Nonionic Pesticides
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Author : Shalini Jayasundera
language : en
Publisher:
Release Date : 1995
Clay And Organic Matter Contributions To The Sorption Of Nonionic Pesticides written by Shalini Jayasundera and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Dissolved Organic Matter Nonionic Pesticide Interactions And Nonionic Pesticide Sorption By Clay And Soil As Influenced By Dissolved Organic Matter
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Author : Dar-Yuan Lee
language : en
Publisher:
Release Date : 1988
Dissolved Organic Matter Nonionic Pesticide Interactions And Nonionic Pesticide Sorption By Clay And Soil As Influenced By Dissolved Organic Matter written by Dar-Yuan Lee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Napropamide categories.
Sorption And Release Of Pesticides In Soils
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Author : Riaz Ahmad
language : en
Publisher:
Release Date : 1999
Sorption And Release Of Pesticides In Soils written by Riaz Ahmad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Soils categories.
The aims of this study were: 1. to examine the sorption behaviour of selected nonionic and ionic pesticides in a range of soils; 2. to characterise the nature of soil organic matter in a diverse group of soils and relate the structural and molecular variations of organic matter to sorption of nonionic pesticides; and 3. to study the release behaviour of carbaryl and ethion from two historically contaminated soils and to elucidate the mechanisms of their aging/sequestration. (abstract)
The Sorption Of Nonionic Organic Contaminants To Natural Dissolved Organic Matter And Its Implication For Facilitated Contaminant Transport
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Author : Bruce Eric Herbert
language : en
Publisher:
Release Date : 1992
The Sorption Of Nonionic Organic Contaminants To Natural Dissolved Organic Matter And Its Implication For Facilitated Contaminant Transport written by Bruce Eric Herbert and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Organic compounds categories.
Influence Of The Polarity Of Non Ionic Pesticides On Theirs Sorption By A Latosol
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Author :
language : pt-BR
Publisher:
Release Date : 2002
Influence Of The Polarity Of Non Ionic Pesticides On Theirs Sorption By A Latosol written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Investigou-se a influência da polaridade de pesticidas não-iônicos sobre solo da classe Latossolo Vermelho Acriférrico típico. Foram estudados treze pesticidas, abrangendo uma ampla faixa de polaridade, expressa na forma do coeficiente de partição do composto entre n-octanol e água (Kow). Foram construídas isotermas de sorção dos pesticidas por meio de agitação de subamostras do solo com soluções aquosas dos compostos. As determinações quantitativas dos pesticidas nas soluções aquosas foram feitas por cromatografia líquida de alta eficiência, usando-se detector de luz ultravioleta. Verificou-se que as isotermas de sorção de todos os pesticidas se ajustaram bem ao modelo de Freundlich, sendo que os valores de Kf dos diferentes compostos variaram de 0,2 a 202 mL.nmol-1. Os valores de log Kf dos pesticidas mostraram-se linearmente correlacionados (R2 = 0,87) com seus valores de log Kow, revelando que a partição hidrofóbica na matéria orgânica foi o principal mecanismo de sorção dos compostos no solo estudado; contudo, uma vez que os valores de log Kow dos compostos não refletiram com precisão os seus coeficientes de sorção no solo estudado, os resultados indicaram que outros fatores afetam a sorção de compostos não-iônicos em solos. Para a maioria dos pesticidas, os valores de Kf obtidos foram maiores do que aqueles previstos pela equação de Briggs (1981), a qual relaciona o valor de Kf do composto com seu valor de Kow e o teor de matéria orgânica do solo. Esses resultados mostraram que a referida equação, obtida em solos da Inglaterra, não é adequada para a previsão do valor de Kf de pesticidas no solo estudado no presente trabalho, e que a natureza da matéria orgânica pode ser um importante fator a influenciar a sorção de pesticidas não-iônicos em solos.
Sorption And Degradation Of Pesticides And Organic Chemicals In Soil
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Author : Daniel M. Linn
language : en
Publisher:
Release Date : 1993
Sorption And Degradation Of Pesticides And Organic Chemicals In Soil written by Daniel M. Linn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Science categories.
Reports the current thinking on the role that adsorption may play in the rate and extent of an organic compound's degradation in the soil. Among the topics of the 14 papers are diazinon degradation and dissipation in the root zone, the reductive dechlorination of hexachlorobenzene in wetland soils, and the utility of sorption and degradation parameters from the literature for site-specific pesticide impact assessments. Proceedings from an October 1991 symposium in Denver. No index. Annotation copyright by Book News, Inc., Portland, OR
Retention Of Organic Contaminants By Soils And Clays Exchanged With Organic Cations
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Author : Jiunn-Fwu Lee
language : en
Publisher:
Release Date : 1988
Retention Of Organic Contaminants By Soils And Clays Exchanged With Organic Cations written by Jiunn-Fwu Lee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Clay minerals categories.
The Adsorption Of Some Organic Compounds Especially Herbicides On Clay Minerals
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Author : Martinus Johannes Frissel
language : en
Publisher:
Release Date : 1961
The Adsorption Of Some Organic Compounds Especially Herbicides On Clay Minerals written by Martinus Johannes Frissel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Clay categories.
Sorption Of Nonionic Organic Compounds By Anthropogenic Organic Phases In Soil Water Systems
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Author : Shaobai Sun
language : en
Publisher:
Release Date : 1992
Sorption Of Nonionic Organic Compounds By Anthropogenic Organic Phases In Soil Water Systems written by Shaobai Sun and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Naphthalene categories.
The Adsorption Of Some Organic Compounds Especially Herbicides On Clay Minerals
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Author : M. J. Frissel
language : en
Publisher:
Release Date : 1961
The Adsorption Of Some Organic Compounds Especially Herbicides On Clay Minerals written by M. J. Frissel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Clay categories.