کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4422565 1308555 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enrichment of elements in detritus from a constructed wetland and consequent toxicity to Hyalella azteca
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Enrichment of elements in detritus from a constructed wetland and consequent toxicity to Hyalella azteca
چکیده انگلیسی

In a pilot constructed wetland treatment system specifically designed to treat constituents of flue gas desulfurization wastewater, detritus adsorbs significantly high concentrations of Hg, Se, and As. Results of this research indicate that Hg, Se, and As were enriched in detritus from Schoenoplectus californicus and Typha angustifolia collected from the constructed wetland by factors up to 4600, 26,300, and 15,600, respectively. As an important food source for many organisms, element enrichment makes the detritus an even greater source of contaminants to the food web. Results demonstrate that the natural decomposition of plants in this constructed wetland treatment system produces detritus enriched with Hg, Se, and As at levels potentially hazardous to aquatic organisms. To completely assess ecological risks associated with the use of constructed wetland treatment systems, contaminant enrichment, bioavailability, and toxicity in detritus must be considered.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 64, Issue 3, July 2006, Pages 264–272
نویسندگان
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