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Author : Jonathan Levy (Ph.D.)
Publisher :
ISBN 13 :
Total Pages : 561 pages
Book Rating : 4.:/5 (222 download)
Download or read book A Field and Modeling Study of Atrazine Transport and Fate in Groundwater written by Jonathan Levy (Ph.D.) and published by . This book was released on 19?? with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jonathan Levy
Publisher :
ISBN 13 :
Total Pages : 476 pages
Book Rating : 4.:/5 (89 download)
Download or read book A Field and Modeling Study of Atrazine Transport and Fate in Groundwater written by Jonathan Levy and published by . This book was released on 1993 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. Magdi Selim
Publisher : CRC Press
ISBN 13 : 146655794X
Total Pages : 356 pages
Book Rating : 4.4/5 (665 download)
Download or read book Transport & Fate of Chemicals in Soils written by H. Magdi Selim and published by CRC Press. This book was released on 2014-09-17 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last four decades, tremendous advances have been made towards the understanding of transport characteristics of contaminants in soils, solutes, and tracers in geological media. Transport & Fate of Chemicals in Soils: Principles & Applications offers a comprehensive treatment of the subject complete with supporting examples of mathematical models that describe contaminants reactivity and transport in soils and aquifers. This approach makes it a practical guide for designing experiments and collecting data that focus on characterizing retention as well as release kinetic reactions in soils and contaminant transport experiments in the laboratory, greenhouse), and in the field. The book provides the basic framework of the principals governing the sorption and transport of chemicalsin soils. It focuses on physical processes such as fractured media, multiregion, multiple porosities, and heterogeneity and effect of scale as well as chemical processes such as nonlinear kinetics, release and desorption hysteresis, multisite and multireaction reactions, and competitive-type reactions. The coverage also includes details of sorption behavior of chemicals with soil matrix surfaces as well the integration of sorption characteristics with mechanisms that govern solute transport in soils. The discussions of applications of the principles of sorption and transport are not restricted to contaminants, but also include nitrogen, phosphorus, and trace elements including essential micronutrients, heavy metals, military explosives, pesticides, and radionuclides. Written in a very clear and easy-to-follow language by a pioneer in soil science, this book details the basic framework of the physical and chemical processes governing the transport of contaminants, trace elements, and heavy metals in soils. Highly practical, it includes laboratory methods, examples, and empirical formulations. The approach taken by the author gives you not only the fundamentals of understanding of reactive chemicals retention and their transport in soils and aquifers, but practical guidance you can put to immediate use in designing experiments and collecting data.
Author : David J. Holtschlag
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.3/5 (91 download)
Download or read book Assessment of Ground-water Vulnerability to Atrazine Leaching in Kent County, Michigan written by David J. Holtschlag and published by . This book was released on 1998 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hossein Ghadiri
Publisher : CRC Press
ISBN 13 : 9780873717472
Total Pages : 240 pages
Book Rating : 4.7/5 (174 download)
Download or read book Modeling Chemical Transport in Soils written by Hossein Ghadiri and published by CRC Press. This book was released on 1992-09-23 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling Chemical Transport in Soils: Natural and Applied Contaminants provides a comprehensive discussion of mathematical models used to anticipate and predict the consequences and fate of natural and applied chemicals. The book evaluates the strengths, weaknesses, and possibilities for application of numerous models used throughout the world. It examines the theoretical support and need for experimental calibration for each model. The book also reviews world literature to discuss such topics as the movement of sorbed chemicals by soil erosion, the movement of reactive and nonreactive chemicals in the subsurface and groundwater, and salt transport in the landscape. Modeling Chemical Transport in Soils: Natural and Applied Contaminants is an important volume for environmental scientists, agricultural engineers, regulatory personnel, farm managers, consultants, and the chemical industry.
Author : Prasun Kumar Allepalli
Publisher :
ISBN 13 :
Total Pages : 194 pages
Book Rating : 4.:/5 (367 download)
Download or read book Modeling Fate and Transport of Atrazine in the Saturated- Unsaturated Zone of Soil written by Prasun Kumar Allepalli and published by . This book was released on 1996 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David J. Holtschlag
Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.3/5 (91 download)
Download or read book Vulnerability of Ground Water to Atrazine Leaching in Kent County, Michigan written by David J. Holtschlag and published by . This book was released on 1997 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David J. Holtschlag
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.3/5 (121 download)
Download or read book Assessment of Ground-water Vulnerability to Atrazine Leaching in Kent County, Michigan written by David J. Holtschlag and published by . This book was released on 1998 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lajpat Ahuja
Publisher : Water Resources Publication
ISBN 13 : 9781887201087
Total Pages : 388 pages
Book Rating : 4.2/5 (1 download)
Download or read book Root Zone Water Quality Model written by Lajpat Ahuja and published by Water Resources Publication. This book was released on 2000 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication comes with computer software and presents a comprehensive simulation model designed to predict the hydrologic response, including potential for surface and groundwater contamination, of alternative crop-management systems. It simulates crop development and the movement of water, nutrients and pesticides over and through the root zone for a representative unit area of an agricultural field over multiple years. The model allows simulation of a wide spectrum of management practices and scenarios with special features such as the rapid transport of surface-applied chemicals through macropores to deeper depths and the preferential transport of chemicals within the soil matrix via mobile-immobile zones. The transfer of surface-applied chemicals (pesticides in particular) to runoff water is also an important component.
Author : Steven Pagan
Publisher :
ISBN 13 :
Total Pages : 85 pages
Book Rating : 4.:/5 (467 download)
Download or read book Atrazine Transport Through a Glacial Till Aquifer in North-central Missouri written by Steven Pagan and published by . This book was released on 2009 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the claypan of North Central Missouri is traditionally believed to protect the groundwater from contamination, low concentrations of the herbicide atrazine have been detected in a shallow glacial till aquifer. The fate of the atrazine in the aquifer is not well known. With the continued use of atrazine, the concentration in the aquifer could increase to levels of concern or decrease if the conditions are not favorable for persistence. Beginning in the Fall 2007 and continuing through the Fall 2008, concentrations of atrazine and its degradation products deethylatrazine (DEA) and deisopropylatrazine (DIA) were measured at a typical field in Northeast Boone County, Missouri. The concentration ratio of DEA to atrazine (DAR) supports the concept that preferential flow paths within the claypan allow for direct transport of atrazine to the aquifer. These data were also necessary for constructing computer based flow models of the aquifer. Using the programs MODFLOW and MT3DMS within GMS 6.0, a groundwater flow model was produced that was coupled with a solute transport model of atrazine within the saturated zone. The model was constructed using constraints of historical use of atrazine since 1991. The model results were similar to those measured in the field and predictive simulations did not indicate an increase of atrazine concentration to alarming levels.
Author : Susan Kaye Neurath
Publisher :
ISBN 13 :
Total Pages : 440 pages
Book Rating : 4.:/5 (469 download)
Download or read book Modeling the Processes that Influence the Fate and Transport of Atrazine in the Active-surface Soil Horizon written by Susan Kaye Neurath and published by . This book was released on 2000 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 362 pages
Book Rating : 4.:/5 (319 download)
Download or read book Water-resources Investigations Report written by and published by . This book was released on 1998 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert A. Rosenbaum
Publisher :
ISBN 13 : 9780756712570
Total Pages : 0 pages
Book Rating : 4.7/5 (125 download)
Download or read book Agricultural Atrazine Use and Water Quality written by Robert A. Rosenbaum and published by . This book was released on 2001-08 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compares the risks & benefits of nat. bans on the use of the corn & sorghum herbicide atrazine, as well as the entire group of triazine herbicides. They are the most widely detected group of pesticides in surface & groundwater. Policies designed to reduce corn & sorghum herbicide use can lead to significant reductions in overall pesticide use. Chapters: environ. fate component; chemical leaching; surface water runoff; air transport; weed competition; econ. behavior model; risk characterization & weighting; results of analysis of atrazine & triazine bans; baseline use of triazine herbicides; economic impacts; input substitution effects; environmental impacts; & hazard index.
Author : Michael J. Focazio
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (319 download)
Download or read book Assessing Ground-water Vulnerability to Contamination written by Michael J. Focazio and published by . This book was released on 2002 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (932 download)
Download or read book Soil Persistence of Atrazine, Metolachlor and Metribuzin as Influenced by Temperature, Soil Moisture, and Soil Characteristics written by and published by . This book was released on 1995 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes a study conducted to: determine the kinetics of dissipation & bound residue formation of widely used pesticides (the herbicides atrazine, metolachlor, & metribuzin) in the Great Lakes area; test laboratory derived dissipation & bound residue formation data; provide decay rates & hydrologic transport parameters for soils in the Great Lakes Basin as input for simulation models; and modify the LEACHP pesticide fate & transport model to provide improved measures of pesticide dissipation kinetics. The study involved a series of experiments and field tests to determine the effect of soil structure on dissipation & bound residue formation, the kinetics of dissipation & bound residue formation in the laboratory & field, the leaching of herbicides, the release of aged residues, and water & transport parameters for use in the model. Results discussed include the variations in herbicide dissipation among different types of soils and tillage practices, the mineralization & volatilization of herbicides in the field, and the performance of the modified LEACHP model.
Author : Deborah Fairchild
Publisher : CRC Press
ISBN 13 : 9780873710183
Total Pages : 596 pages
Book Rating : 4.7/5 (11 download)
Download or read book Ground Water Quality Protection written by Deborah Fairchild and published by CRC Press. This book was released on 1987-05-01 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new book provides a sound summary of the rapidly expanding body of knowledge on ground water pollution sources, evaluation and control. It is used to plan and implement ground water quality management programs, and also may be used as a text. The first three (introductory) chapters are about ground water quality, its importance, its management, and information sources.
Author : James Percy Mutch
Publisher : Burlington, Ont. : Inland Waters Directorate
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (359 download)
Download or read book EXPRES written by James Percy Mutch and published by Burlington, Ont. : Inland Waters Directorate. This book was released on 1993 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The EXPRES expert system is designed to aid regulatory personnel in their assessment of the potential for pesticides to contaminate the soil and shallow groundwater environment. The system consists of one screening assessment model and two mathematical simulation models. This report reviews the theory of pesticide transport and transformation in the unsaturated zone, the models used in the expert system, the development and operation of EXPRES, results from an evaluation of EXPRES using four case studies typical of a pesticide assessment, and scenarios illustrating the application of EXPRES. Appendices include a list of pesticides in the EXPRES data base, sample screens, and lists of EXPRES files. This report serves as a user manual for the expert system.
