کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4421676 1308519 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ecotoxicological risk assessment of undisturbed metal contaminated soil at two remote lighthouse sites
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Ecotoxicological risk assessment of undisturbed metal contaminated soil at two remote lighthouse sites
چکیده انگلیسی

Ecotoxicological risk assessments of contaminated soil are commonly completed using guideline values based on total concentrations. However, only certain fractions of contaminants are bioavailable and pose a hazard to the environment. This paper investigates the relationship between measured metal concentrations in soil and soil leachate, and the effects in organisms exposed to intact, undisturbed soil cores (wheat, Tricum aestivum) and soil leachate (lettuce, Lactuca sativa, and water flea, Daphnia magna). Despite the samples containing metal concentrations significantly above guideline values, metals of concern (e.g. Pb and Zn) did not have a significant toxic effect on wheat or D. magna. During weeks with low leachate pH, an effect on lettuce root elongation was observed in the most contaminated samples. This study has shown that bioassays with intact soil cores can indicate metal bioavailability and provide a better estimate of ecological risk than total metal concentrations in the soil.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 73, Issue 5, July 2010, Pages 961–969
نویسندگان
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