کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4415043 1307735 2007 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
In vitro assessment of arsenic bioaccessibility in contaminated (anthropogenic and geogenic) soils
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
In vitro assessment of arsenic bioaccessibility in contaminated (anthropogenic and geogenic) soils
چکیده انگلیسی

Arsenic (As) bioaccessibility in contaminated soils (n = 50) was assessed using the simplified bioaccessibility extraction test (SBET). Soils used in the study were collected from sites where As was used as an herbicide (railway corridor) or pesticide (cattle dip sites), from former gold mines and from highly mineralised locations containing geogenic As sources (gossans). In all but three soils, As bioaccessibility was less than 50% indicating that a significant proportion of the total As concentration may not be available for absorption in the gastrointestinal tract following incidental soil ingestion. When regression models were developed based on soil properties, the descriptive variables best able to describe As bioaccessibility in railway corridor, dip site and mine site soils were total As and total or dithionite-citrate extractable (free) iron (Fe). While As bioaccessibility could be predicted (r2 = 0.955, n = 50) in these contaminated soils, As bioaccessibility for gossan soils was a poor fit using linear or multivariate regression analysis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 69, Issue 1, August 2007, Pages 69–78
نویسندگان
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