کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4423131 1308811 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Soil–plant–animal transfer models to improve soil protection guidelines: A case study from Portugal
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Soil–plant–animal transfer models to improve soil protection guidelines: A case study from Portugal
چکیده انگلیسی

Food chain models are essential tools to assess risks of soil contamination in view of product quality including fodder crops and animal products. Here we link soil to plant transfer (SPT) models for potentially toxic elements (PTEs) including As, Ba, Cd, Co, Cu, Hg, Ni, Pb, Sb, U and Zn with models describing accumulation in animal organs. Current EU standards for food products and acceptable daily intake levels (ADI) for humans were used as critical limits. The combined model is used to assess the impact of soil contamination on animal health, product quality and human health using data from 100 arable fields. Results indicate that 42 existing arable fields near industrial and mining sites are unsuitable for animal grazing in view of food safety due to elevated intake of Cd, Cu, Hg and Pb by cows and sheep. At 10 sites daily intake levels of As by cows exceeded threshold concentrations regarding the quality of animal products.The food chain model also was used inversely to derive soil threshold concentrations in view of EU fodder standards. Calculated threshold levels in soil for As, Cd, Cu, Pb, Hg and Zn appear to be in line with those proposed or used in other EU countries. As such the approach applied here can form a conceptual basis for a more harmonized risk assessment strategy regarding the protection of animal and human health.


► Uptake of metals/metalloids can be predicted by soil plant transfer (SPT) models.
► We used SPT models to derive soil thresholds for As, Cd, Cu, Pb, Hg and Zn.
► Food chain models can be the conceptual basis of more realistic risk assessment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environment International - Volume 39, Issue 1, February 2012, Pages 27–37
نویسندگان
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