Relationship between the evaporation rate and vapor pressure of moderately and highly volatile chemicals.
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.
van Wesenbeeck
Ian
I
DowAgroSciences LLC, Indianapolis, IN 46268, USA. ijvanwesenbeeck@dow.com
Driver
Jeffrey
J
Ross
John
J
D000465:Algorithms; D003627:Data Interpretation, Statistical; D006813:Humidity; D007306:Insecticides / Q000032:analysis; D016014:Linear Models; D009930:Organic Chemicals / Q000032:analysis / Q000737:chemistry*; D010150:Paint / Q000032:analysis; D012044:Regression Analysis; D012997:Solvents / Q000032:analysis; D013499:Surface Properties; D014835:Volatilization
D007306:Insecticides; D009930:Organic Chemicals; D012997:Solvents