Download or read book Fate of Pesticides in the Atmosphere Implications for Environmental Risk Assessment written by Harrie F.G. van Dijk and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global pesticide use is currently estimated at approximately 2. 5 billion kg per year (Pimentel eta/. , 1998). To be effective, pesticides need to persist for a certain period of time. However, the longer their persistence, the greater the potential for transport of a fraction of the amount applied away from the target area. Pesticides are dispersed in the environment by water currents, wind, or biota. Pesticides can directly contaminate ground and surface waters by leaching, surface run-off and drift. Pesticides can also enter the atmosphere during application by evaporation and drift of small spray droplets, that remain airborne. Following application, pesticides may volatilise from the crop or the soil. Finally, wind erosion can cause soil particles and dust loaded with pesticides to enter the atmosphere. The extent to which pesticides enter the air compartment is dependent upon many factors: the properties of the substance in question (e. g. vapour pressure), the amount used, the method of application, the formulation, the weather conditions (such as wind speed, temperature, humidity), the nature of the crop and soil characteristics. Measurements at application sites reveal that sometimes more than half of the amount applied is lost into the atmosphere within a few days (Spencer and Cliath, 1990; Taylor and Spencer; 1990; Van den Berg et a/. , this issue).
Download or read book Fate of Pesticides in the Atmosphere written by Harrie F. G. Van Dijk and published by . This book was released on 2014-03-14 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pesticides in the Atmosphere written by Michael S. Majewski and published by CRC Press. This book was released on 2019-06-21 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most people know about the presence and health effects of pesticide residues in the water they drink. However, they may not realize the impact of atmospheric transportation and deposition of pesticides on water quality. Scientific studies of pesticides in various atmospheric matrices (air, rain, snow, aerosols, and fog) provide some of the answers.
Download or read book Fate of Pesticides in the Atmosphere Implications for Environmental Risk Assessment written by Harrie F.G. van Dijk and published by Springer. This book was released on 1999-10-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global pesticide use is currently estimated at approximately 2. 5 billion kg per year (Pimentel eta/. , 1998). To be effective, pesticides need to persist for a certain period of time. However, the longer their persistence, the greater the potential for transport of a fraction of the amount applied away from the target area. Pesticides are dispersed in the environment by water currents, wind, or biota. Pesticides can directly contaminate ground and surface waters by leaching, surface run-off and drift. Pesticides can also enter the atmosphere during application by evaporation and drift of small spray droplets, that remain airborne. Following application, pesticides may volatilise from the crop or the soil. Finally, wind erosion can cause soil particles and dust loaded with pesticides to enter the atmosphere. The extent to which pesticides enter the air compartment is dependent upon many factors: the properties of the substance in question (e. g. vapour pressure), the amount used, the method of application, the formulation, the weather conditions (such as wind speed, temperature, humidity), the nature of the crop and soil characteristics. Measurements at application sites reveal that sometimes more than half of the amount applied is lost into the atmosphere within a few days (Spencer and Cliath, 1990; Taylor and Spencer; 1990; Van den Berg et a/. , this issue).
Download or read book Pesticides in the Soil Environment written by Hwei-Hsien Cheng and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pesticides in the soil environment - an overview. Pesticide sources to the soil and principles of spray physics. The retention processes: mechanisms. Sorption estimates for modeling. Abiotic transformations in water, sediments, and soil. Biological transformation processes of pesticides. Volatilization and vapor transport processes. Organic chemical transport to Groundwater. Movement of pesticides into surface waters. Modeling pesticide fate in soils. Efficacy of soil-applied pesticides. Impact of pesticides on the environment. Risk/benefit and regulations. Chemical index.
Download or read book Fate of Pesticides and Chemicals in the Environment written by Jerald L. Schnoor and published by John Wiley & Sons. This book was released on 1992-04-16 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: A result of important bilateral scientific agreements between the U.S. and the Soviet Union on the fate of chemicals and pesticides in the environment. Written by experts in both countries, it familiarizes the reader with recent state-of-the-art research being conducted in the areas of agricultural management and water pollution control. A number of models are provided to give the reader a concise grasp of exposure and ecological risk assessments involving these pollutants. Focuses on the necessity to improve our deteriorating standards of public health, environmental science and technology with a total systems approach through the pooled talents of scientists and engineers.
Download or read book Fate of Pesticides in the Environment written by James W. Biggar and published by Agricultural Experiment Station Di Natural Resources Univers. This book was released on 1987 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: This is a compilation of the proceedings of a seminar of the same title held in Sacramento, CA on March 4 and 5, 1985. It includes sections on pesticide classes, physiochemical fate processes, and case studies of the reaction of several pesticides in environmental situations. Helpful information for growers, applicators, and advisors is provided.
Download or read book Handbook of Environmental Fate and Exposure Data written by Philip H. Howard and published by CRC Press. This book was released on 1991-06-17 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 5-volume set allows you to assess the health and environmental effects of chemicals by determining the routes of exposure of the chemical to sensitive organisms. Environmental Fate and Exposure of Organic Chemicals provides relevant facts on how individual chemicals behave in the environment and how humans and environmental organisms are exposed to the chemicals during their production, rise, transport, and disposal. Each chemical is prepared by one of the best-known organizations in environmental fate and exposure and is peer-reviewed by a panel of expert scientists. The information on each chemical includes all experimental values and references for physical properties, all chemical fate studies, and all available monitoring data and interpretative summaries.
Download or read book Fate of Pesticides in Environment written by Alexander Shalom Tahori and published by . This book was released on 1972 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fate of pesticides in environment written by Alexander Shalom Tahori and published by . This book was released on 1972 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Future Role of Pesticides in US Agriculture written by National Research Council and published by National Academies Press. This book was released on 2000-11-02 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although chemical pesticides safeguard crops and improve farm productivity, they are increasingly feared for their potentially dangerous residues and their effects on ecosystems. The Future Role of Pesticides explores the role of chemical pesticides in the decade ahead and identifies the most promising opportunities for increasing the benefits and reducing the risks of pesticide use. The committee recommends R&D, program, and policy initiatives for federal agriculture authorities and other stakeholders in the public and private sectors. This book presents clear overviews of key factors in chemical pesticide use, including: Advances in genetic engineering not only of pest-resistant crops but also of pests themselves. Problems in pesticide useâ€"concerns about the health of agricultural workers, the ability of pests to develop resistance, issues of public perception, and more. Impending shifts in agricultureâ€"globalization of the economy, biological "invasions" of organisms, rising sensitivity toward cross-border environmental issues, and other trends. With a model and working examples, this book offers guidance on how to assess various pest control strategies available to today's agriculturist.
Download or read book Handbook of Environmental Fate and Exposure Data written by PhilipH. Howard and published by Routledge. This book was released on 2017-09-29 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 5-volume set allows you to assess the health and environmental effects of chemicals by determining the routes of exposure of the chemical to sensitive organisms. Environmental Fate and Exposure of Organic Chemicals provides relevant facts on how individual chemicals behave in the environment and how humans and environmental organisms are exposed to the chemicals during their production, rise, transport, and disposal. Each chemical is prepared by one of the best-known organizations in environmental fate and exposure and is peer-reviewed by a panel of expert scientists. The information on each chemical includes all experimental values and references for physical properties, all chemical fate studies, and all available monitoring data and interpretative summaries.
Download or read book Long Range Transport of Pesticides written by David A. Kurtz and published by CRC Press. This book was released on 1990-09-24 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: International experts present the latest vital information on long range transport of pesticides. This book includes sources of pesticides from lakes, oceans, and soil, circulation on global and regional basis, deposition, and fate of pesticides. An ACS Division of Agrochemicals book and Environmental Chemistry book.
Download or read book Silent Spring written by Rachel Carson and published by Houghton Mifflin Harcourt. This book was released on 2002 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The essential, cornerstone book of modern environmentalism is now offered in a handsome 40th anniversary edition which features a new Introduction by activist Terry Tempest Williams and a new Afterword by Carson biographer Linda Lear.
Download or read book Pesticides written by Hamir S. Rathore and published by CRC Press. This book was released on 2012-04-11 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pesticides play an important role in controlling pests that carry diseases and threaten crop production. In recent years, however, there has been increased concern about the adverse impacts of pesticides and their degradation products on public health and the environment. A considerable amount of work is being done to develop nonchemical methods of
Download or read book Environmental Fate Modelling of Pesticides written by Otto Richter and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is concerned with modelling the fate of organic substances in the soil. Once a chemical enters the soil it is subject to various transformation processes. It partitions between the liquid, solid and gaseous phase, it is sorbed to different binding sites with a different strength of bonding, it may decay by a simple chemical process or it may be transformed by microorganisms. Solute transport through soil and subsurface is mediated by water flow and is strongly influenced by solute sorption. To complicate matters, soil structures are heterogeneous. All these processes are embedded in a spatio-temporal hierarchy. The book brings together many different aspects of environmental fate modelling of pesticides comprising such diverse subjects as, e.g., compartment theory, nonlinear biological degradation models, modelling toxicity, parameter identification, coupling of physical and biological processes, pedotransfer functions, translation of models across scales, coupling geographical information systems with models, and FUZZY-approaches.
Download or read book Pesticides in the Atmosphere written by Michael S. Majewski and published by . This book was released on 1995 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
