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Relationship Between the Evaporation Rate and Vapor Pressure of Moderately and Highly Volatile Chemicals

Abstract

Volatilization of chemicals can be an important form of dissipation in the environment. Rates of evaporative losses from plant and soil surfaces are useful for estimating the potential for food-related dietary residues and operator and bystander exposure, and can be used as source functions for screening models that predict off-site movement of volatile materials. A regression of evaporation on vapor pressure from three datasets containing 82 pesticidal active ingredients and co-formulants, ranging in vapor pressure from 0.0001 to >30,000 Pa was developed for this purpose with a regression correlation coefficient of 0.98.

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Correspondence to Ian van Wesenbeeck.

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van Wesenbeeck, I., Driver, J. & Ross, J. Relationship Between the Evaporation Rate and Vapor Pressure of Moderately and Highly Volatile Chemicals. Bull Environ Contam Toxicol 80, 315–318 (2008). https://doi.org/10.1007/s00128-008-9380-2

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Keywords

  • Vapor pressure
  • Evaporation
  • Pesticide
  • Co-formulant