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Pesticides in the Atmosphere by Michael S. Majewski Pdf
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.
Fate of Pesticides in the Atmosphere: Implications for Environmental Risk Assessment by Harrie F.G. van Dijk,W. Addo J. van Pul,Pim de Voogt Pdf
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).
Harrie F. G. van Dijk,W. Addo J. van Pul,Pim de Voogt
Author : Harrie F. G. van Dijk,W. Addo J. van Pul,Pim de Voogt Publisher : Unknown Page : 575 pages File Size : 42,7 Mb Release : 1999 Category : Air ISBN : OCLC:42816624
Pesticides, Organic Contaminants, and Pathogens in Air by James N. Seiber,Thomas M. Cahill Pdf
The air is an important but largely unrecognized source of contaminant fate in the environment, including transport of pesticides and contaminants to nontarget areas and exposures for people and wildlife. This book summarizes and places in perspective the potential transport, transformation, and health implications of pesticides and contaminants in air, including the air we breathe. It delves into the hypothesis that the atmosphere is the most significant environmental compartment affecting the overall transport and fate of many classes of environmental contaminants. The authors draw parallels between sampling, analysis, and impact of airborne toxics and particulate matter with the COVID-19 pandemic. Airborne viruses and fine particulate matter, which are of similar size, have remarkable parallels in how they are transmitted and accumulated in the respiratory tract. FEATURES Assesses exposures of people and wildlife to airborne chemicals Includes case study applications, with relevant data summarized for pesticides and contaminants in air Discusses approaches to modeling pesticides’ and contaminants’ dispersion and fate in air Includes an assessment of the physicochemical properties of pesticides and contaminants that influence sampling and atmospheric mobility and fate The authors are global experts in air contaminant research, and this book is well organized and helpful for people interested in regulatory, health, and other topics related to pesticides and contaminants in air. James N. Seiber is a Professor Emeritus at the University of California, Davis. Thomas M. Cahill is an Associate Professor in the School of Mathematical and Natural Sciences at Arizona State University.
Fate of Pesticides in the Atmosphere: Implications for Environmental Risk Assessment by Harrie F.G. van Dijk,W. Addo J. van Pul,Pim de Voogt Pdf
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).
Ecological Risk Assessment for Chlorpyrifos in Terrestrial and Aquatic Systems in the United States by John P. Giesy,Keith R. Solomon Pdf
Reviews of Environmental Contamination and Toxicology attempts to provide concise, critical reviews of timely advances, philosophy and significant areas of accomplished or needed endeavor in the total field of xenobiotics, in any segment of the environment, as well as toxicological implications.
Pesticides in the Atmosphere by Michael S. Majewski,Paul D. Capel Pdf
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.
National Research Council,Commission on Life Sciences,Board on Environmental Studies and Toxicology,Board on Agriculture and Natural Resources,Committee on the Future Role of Pesticides in US Agriculture
Author : National Research Council,Commission on Life Sciences,Board on Environmental Studies and Toxicology,Board on Agriculture and Natural Resources,Committee on the Future Role of Pesticides in US Agriculture Publisher : National Academies Press Page : 325 pages File Size : 47,9 Mb Release : 2000-11-02 Category : Technology & Engineering ISBN : 9780309172943
The Future Role of Pesticides in US Agriculture by National Research Council,Commission on Life Sciences,Board on Environmental Studies and Toxicology,Board on Agriculture and Natural Resources,Committee on the Future Role of Pesticides in US Agriculture Pdf
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.
Residue Reviews/Rückstandsberichte by Francis A. Gunther Pdf
That residues of pesticide and other "foreign" chemicals in food stuffs are of concern to everyone everywhere is amply attested by the reception accorded previous volumes of "Residue Reviews" and by the gratifying enthusiasm, sincerity, and efforts shown by all the in dividuals from whom manuscripts have been solicited. Despite much propaganda to the contrary, there can never be any serious question that pest-control chemicals and food-additive chemicals are essential to adequate food production, manufacture, marketing, and storage, yet without continuing surveillance and intelligent control some of those that persist in our foodstuffs could at times conceivably endanger the public health. Ensuring safety-in-use of these many chemicals is a dynamic challenge, for established ones are continually being dis placed by newly developed ones more acceptable to food technologists, pharmacologists, taxicologists, and changing pest-control requirements in progressive food-producing economies. These matters are of genuine concern to increasing numbers of governmental agencies and legislative bodies around the world, for some of these chemicals have resulted in a few mishaps from improper use. Adequate safety-in-use evaluations of any of these chemicals per sisting into our foodstuffs are not simple matters, and they incorporate the considered judgments of many individuals highly trained in a variety of complex biological, chemical, food technological, medical, pharmacological, and toxicological disciplines.
Now recognized as one of the most influential books of the twentieth century, Silent Spring exposed the destruction of wildlife through the widespread use of pesticides Rachel Carson's Silent Spring alerted a large audience to the environmental and human dangers of pesticides, spurring revolutionary changes in the laws affecting our air, land, and water. Despite condemnation in the press and heavy-handed attempts by the chemical industry to ban the book, Carson succeeded in creating a new public awareness of the environment which led to changes in government and inspired the ecological movement. It is thanks to this book, and the help of many environmentalists, that harmful pesticides such as DDT were banned from use in the US and countries around the world. This Penguin Modern Classics edition includes an introduction by Lord Shackleton, a preface by World Wildlife Fund founder Julian Huxley, and an afterword by Carson's biographer Linda Lear.
Pesticides by Hamir S. Rathore,Leo M.L. Nollet Pdf
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
Analysis of Pesticides in Food and Environmental Samples by Jose L. Tadeo Pdf
Developing safety regulations for pesticides used around the world—in excess of 2.5 million tons annually—requires reliable analytical methods for assessing their impact in food and in the environment. Analysis of Pesticides in Food and Environmental Samples presents the most effective techniques for analyzing pesticide residues and other chemical contaminants in foods as well as in soil, water, and air. Renowned Scientists Report New Data and Advances in the Field The book introduces sample preparation, extraction, and analytical methods specific to each sample type, including foods from vegetal and animal origin. Other chapters discuss important aspects of quality assurance and the applicability of hyphenated analytical techniques. In addition to a practical chapter on the use of biosensors and immunoassays for monitoring and gathering exposure data, the book addresses regulatory aspects and presents current data on the levels of pesticides found in food and environmental matrices. Latest Methods Help Scientists Develop Safer, More Effective Pesticides Analysis of Pesticides in Food and Environmental Samples enables scientists to measure and predict the behavior and toxicity of pesticides with a higher degree of accuracy. The methodologies and insight in this timely work will contribute to the development of more effective, less toxic pesticides as well as better safety regulations.
