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Development and application of a catchment scale pesticide fate and transport model for use in drinking water risk assessment
journal contribution
posted on 2016-09-13, 08:34 authored by S. P. Pullan, Michael J. Whelan, J. Rettino, K. Filby, S. Eyre, I. P. HolmanThis paper describes the development and application of IMPT (Integrated Model for Pesticide Transport), a parameter-efficient tool for predicting diffuse-source pesticide concentrations in surface waters used for drinking water supply. The model was applied to a small UK headwater catchment with high frequency (8h) pesticide monitoring data and to five larger catchments (479-1653km(2)) with sampling approximately every 14days. Model performance was good for predictions of both flow (Nash Sutcliffe Efficiency generally >0.59 and PBIAS <10%) and pesticide concentrations, although low sampling frequency in the larger catchments is likely to mask the true episodic nature of exposure. The computational efficiency of the model, along with the fact that most of its parameters can be derived from existing national soil property data mean that it can be used to rapidly predict pesticide exposure in multiple surface water resources to support operational and strategic risk assessments.
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Citation
Science of The Total Environment, 2016, 563-564, pp. 434-447Author affiliation
/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Geography/Physical GeographyVersion
- VoR (Version of Record)
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Science of The Total EnvironmentPublisher
Elsevierissn
0048-9697eissn
1879-1026Acceptance date
2016-04-17Copyright date
2016Available date
2016-09-13Publisher DOI
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http://www.sciencedirect.com/science/article/pii/S0048969716308282Language
enAdministrator link
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