Abstract
Multimedia dynamic model of the fate of non-volatile organic chemicals (NVOC) in the agricultural environment is described. The modeled environment, consisting of up to three major surfaces environmental compartments, includes air, agricultural soil, and surface water. This model is based on the aquivalence approach suggested by Mackay and co-workers in 1989. As the movement of chemicals in the environment is closely associated with the movement of air, water and organic matter, the complete steady state mass budgets for air, water and particulate organic carbon (POC) between the model compartments are described. All of the model equations, which are expressed in aquivalence notation, the mass balance for NVOC in the environmental surfaces compartments at dynamic state, and equations for the calculation of partitioning, overall persistence, total amount, total concentrations at dynamic state and intermedia fluxes of organic chemicals between air, water, and soil at steady-state are provided.
Highlights
Organic pollutants from the agricultural environment can enter the atmosphere by a variety of different routes, from direct discharges, wind erosion of soil or volatilization from soil or water[1,2]
The purpose of this paper is to develop multimedia fate and transport model of non-volatile organic chemicals (NVOC) in the agricultural environment at Corresponding Author: Mohammad A
The use of this model, intermedia fluxes of organic chemicals between air, water, and soil at steady-state, partitioning, overall persistence, total amount, and total concentrations at dynamic conditions can be calculated. The results of these calculations are useful to decision makers because this model provides an appropriate quantitative framework to evaluate our understanding of the complex interactions between chemicals and the agricultural environment
Summary
Organic pollutants from the agricultural environment can enter the atmosphere by a variety of different routes, from direct discharges, wind erosion of soil or volatilization from soil or water[1,2]. Predicting the fate of organic pollutants released into the environment is necessary to anticipate, and thereby minimize, adverse impacts away from the point of emission. This means that we must understand what happens to a chemical once it has been emitted, and we must be able to forecast its behavior in the environment. Using this information, the probable adverse impacts on the environment and on human health can be estimated
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