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Physical chemistry parameters that control pesticide persistence and leaching in watershed soils

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Title: Physical chemistry parameters that control pesticide persistence and leaching in watershed soils
Author: Gamble, Donald S.
Abstract: This report is intended to account for the physics of water movement, chemical changes and interactions, and microbiological breakdown. The purpose of this project are to use the data collected to produce more realistic and relevant information about the chemical changes and interactions and to improve the reliability of the computer simulations by integrating this improved chemical information into computer simulation models that already use information about water movement. Because the types of empirical data that are currently used as chemical input for hydrology computer models and risk assessment do not account for cause and effect relationships, they do not support predictive calculations very effectively. There is a need for predicative calculation to assess the contamination problem properly. The objectives of the project are to: a) investigate the fundamental processes of the interactions of soils with contaminantsb) use the predictive physical chemistry constants as input for hydrology computer models to improve prediction of contaminant persistence and fate in the environment under field conditionsc) develop new analytical test methods to determine bioavailable concentrations for risk and hazard assessment, and provides information about chemical speciation of the contaminants in the environmentand d) train qualified scientific people meeting high academic professional standards in a combination of environmental disciplines.
URI: http://hdl.handle.net/10214/13923
Date: 1994
Rights: In Copyright - Non-Commercial Use Permitted
Rights Holder: Agriculture and Agri-Food Canada


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