Modelling the bioaccumulation of persistent organic pollutants in agricultural food chains for regulatory exposure assessment

Environmental Science and Pollution Research International
Koki TakakiChris D Collins

Abstract

New models for estimating bioaccumulation of persistent organic pollutants in the agricultural food chain were developed using recent improvements to plant uptake and cattle transfer models. One model named AgriSim was based on K OW regressions of bioaccumulation in plants and cattle, while the other was a steady-state mechanistic model, AgriCom. The two developed models and European Union System for the Evaluation of Substances (EUSES), as a benchmark, were applied to four reported food chain (soil/air-grass-cow-milk) scenarios to evaluate the performance of each model simulation against the observed data. The four scenarios considered were as follows: (1) polluted soil and air, (2) polluted soil, (3) highly polluted soil surface and polluted subsurface and (4) polluted soil and air at different mountain elevations. AgriCom reproduced observed milk bioaccumulation well for all four scenarios, as did AgriSim for scenarios 1 and 2, but EUSES only did this for scenario 1. The main causes of the deviation for EUSES and AgriSim were the lack of the soil-air-plant pathway and the ambient air-plant pathway, respectively. Based on the results, it is recommended that soil-air-plant and ambient air-plant pathway should be calculated sep...Continue Reading

References

Jan 24, 2002·Environmental Toxicology and Chemistry·Stefan Trapp
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Jan 26, 2006·Environmental Science & Technology·Chris CollinsAlbania Grosso
Jun 24, 2009·Environmental Science & Technology·Emma UndemanMichael S McLachlan
Nov 21, 2009·Environmental Science & Technology·Ralph K RosenbaumOlivier Jolliet
Jan 9, 2010·Environmental Science & Technology·Chris D Collins, Eilis Finnegan
Mar 1, 1994·Environmental Science & Technology·R S BoethlingN Tirado
Sep 1, 1995·Environmental Science & Technology·S Trapp, M Matthies
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Jul 28, 2013·Environmental Science & Technology·Chubashini ShunthirasinghamMehran Alaee
Sep 10, 2014·Environmental Science & Technology·Koki TakakiChris D Collins

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Citations

Jul 16, 2019·Ecotoxicology and Environmental Safety·Song CuiZulin Zhang
Sep 7, 2017·Environmental Science & Technology·Christian BogdalMarkus Zennegg

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