Modelling the dispersion of volatilised pesticides in air after application for the assessment of resident and bystander exposure

Evaluation of the potential exposure of bystanders and residents to pesticide vapour emitted from treated agricultural fields is an important component of risk assessment in the pesticide approval process. The information available for the development of a revised exposure assessment is reviewed and...

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Bibliographic Details
Published in:	Biosystems engineering Vol. 107; no. 2; pp. 149 - 154
Main Authors:	Butler Ellis, M.C., Underwood, B., Peirce, M.J., Walker, C.T., Miller, P.C.H.
Format:	Journal Article
Language:	English
Published:	Kidlington Elsevier Ltd 2010 Elsevier
Subjects:	Agricultural machinery and engineering Agronomy. Soil science and plant productions air Biological and medical sciences bystander exposure dispersions emissions environmental exposure equipment performance Fundamental and applied biological sciences. Psychology Generalities. Biometrics, experimentation. Remote sensing new methods pesticide application pesticides public health resident exposure spray drift volatilization volatilized pesticides Bioengineering Evaluation Engineering Pesticides Agriculture Exposure Models Air Application Modeling Dispersion
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Summary:	Evaluation of the potential exposure of bystanders and residents to pesticide vapour emitted from treated agricultural fields is an important component of risk assessment in the pesticide approval process. The information available for the development of a revised exposure assessment is reviewed and a new methodology proposed. Dispersion of vapours downwind of the treated field can be successfully modelled using commercially-available software, although there is no agreed method for predicting the emission of pesticide vapours from a treated field. The proposed exposure assessment model separates the emission of pesticide vapour from its downwind dispersion, allowing the latter to be tailored to UK conditions by using representative meteorological data. More work is needed to develop an appropriate model of emissions that can take into account environmental conditions and physico-chemical properties of the formulation.
Bibliography:	http://dx.doi.org/10.1016/j.biosystemseng.2010.08.002
ISSN:	1537-5110 1537-5129
DOI:	10.1016/j.biosystemseng.2010.08.002