Application of cattle manure as fertilizer in pastureland: estimating the incremental risk due to metal accumulation employing a multicompartment model

Environment International
Amaya FrancoJosé Luis Domingo

Abstract

Specific-site data of metal concentration in cattle manure from NW Spain and a multicompartment fate and exposure model were used to evaluate metal fate and the main routes of exposure after a 100 year period of application of cattle manure as fertiliser in pastureland. Risk assessment was performed as a probabilistic analysis, and using a conservative worst-case exposure scenario. An accumulation model was used to predict the metal concentration in each environmental medium of concern. The incremental risk was estimated for the population inhabiting the surroundings of the area by a general multiexposure model. Monte Carlo simulations were performed to analyse uncertainty of the results. Furthermore, a sensitivity analysis was carried out to identify the contribution to variance by the different metals and exposure routes. Among the five pathways evaluated, the ingestion of meat and milk from cattle grazing in the area represents the main contribution to total exposure. The results indicate that the incremental risk to human health for people living in the surroundings of pasturelands due to continuous application of cattle manure after a 100 year period are not negligible for the metals considered (Cd, Cu, Ni, Pb and Zn), pos...Continue Reading

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Jan 29, 2011·Environmental Science and Pollution Research International·Carla LopesEnrique Roca
Mar 8, 2014·Environmental Science and Pollution Research International·Yunchen ZhaoZhanwen Xiao
Sep 27, 2015·Environmental Science and Pollution Research International·Hailu WuBin Gao
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Jun 25, 2020·Environmental Science and Pollution Research International·Xiao-Yong QianZheng-Ze Tang

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