Abstract
Volatilization and vapor phase transport are important in the dissipation and movement of most pesticides from soil, plant, and water systems. Vapor pressure is the key parameter controlling pesticide vapor behavior and its use, along with other basic physical properties of water solubility, adsorption, and persistence can be used to estimate relative vaporization rates of pesticides under environmental conditions (Spencer et al. 1973). The vapor pressures of many pesticides increase three- to four-fold for each 10°C increase in temperature. Consequently, reliable values for vapor pressure at various temperatures are necessary to estimate vapor losses of chemicals from surface deposits and to calculate their partitioning between soil, water, and air for predicting volatility from water or from wet soils and to calculate atmospheric residence times of chemicals in droplets and aerosols.
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Spencer, W.F., Cliath, M.M. (1983). Measurement of pesticide vapor pressures. In: Gunther, F.A., Gunther, J.D. (eds) Residue Reviews. Residue Reviews, vol 85. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-5462-1_6
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DOI: https://doi.org/10.1007/978-1-4612-5462-1_6
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