Aquatic Exposure Predictions of Insecticide Field Concentrations Using a Multimedia Mass-Balance Model

Environmental Science & Technology
Anja KnäbelRalf Schulz

Abstract

Highly complex process-driven mechanistic fate and transport models and multimedia mass balance models can be used for the exposure prediction of pesticides in different environmental compartments. Generally, both types of models differ in spatial and temporal resolution. Process-driven mechanistic fate models are very complex, and calculations are time-intensive. This type of model is currently used within the European regulatory pesticide registration (FOCUS). Multimedia mass-balance models require fewer input parameters to calculate concentration ranges and the partitioning between different environmental media. In this study, we used the fugacity-based small-region model (SRM) to calculate predicted environmental concentrations (PEC) for 466 cases of insecticide field concentrations measured in European surface waters. We were able to show that the PECs of the multimedia model are more protective in comparison to FOCUS. In addition, our results show that the multimedia model results have a higher predictive power to simulate varying field concentrations at a higher level of field relevance. The adaptation of the model scenario to actual field conditions suggests that the performance of the SRM increases when worst-case cond...Continue Reading

References

Aug 26, 2006·Science·René P SchwarzenbachBernhard Wehrli
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Jul 19, 2012·Environmental Science & Technology·Anja KnäbelRalf Schulz
Dec 13, 2012·Environmental Monitoring and Assessment·Sebastian StehleRalf Schulz
Apr 24, 2013·Integrated Environmental Assessment and Management·Antonio Di Guardo, Joop L M Hermens
Dec 5, 2013·Environmental Science & Technology·Anja KnäbelRalf Schulz
Jul 1, 2014·Proceedings of the National Academy of Sciences of the United States of America·Egina MalajRalf B Schäfer
Apr 15, 2015·Proceedings of the National Academy of Sciences of the United States of America·Sebastian Stehle, Ralf Schulz
Aug 16, 2015·Environmental Science and Pollution Research International·Sebastian Stehle, Ralf Schulz

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Citations

May 10, 2017·Frontiers in Public Health·Lény TeyssierJean-Louis Connat
Dec 10, 2016·Environmental Science & Technology·Nils Kehrein, Stefan Reichenberger

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