کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4425248 1309098 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thallium in the hydrosphere of south west England
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Thallium in the hydrosphere of south west England
چکیده انگلیسی

Thallium is a highly toxic metal whose environmental concentrations, distributions and behaviour are not well understood. In the present study we measure the concentrations of Tl in filtered and unfiltered samples of rain, tap, river, estuarine and waste waters collected from south west England. Dissolved Tl was lowest (<20 ng L−1) in tap water, rain water, treated sewage and landfill effluents, estuarine waters, and rivers draining catchments of sandstones and shales. Concentrations up to about 450 ng L−1 were observed in rivers whose catchments are partly mineralized and where metal mining was historically important, and the highest concentration (∼1400 ng L−1) was measured in water abstracted directly from an abandoned mine. Compared with other trace metals measured (e.g. As, Cd, Co, Cr, Cu, Ni, Pb, Zn), Tl has a low affinity for suspended particles and undergoes little removal by conventional (hydroxide precipitation) treatment of mine water.


► Thallium concentrations have been measured in natural and waste waters from south west England.
► Dissolved concentrations spanned three orders of magnitude and were highest in water from an abandoned mine.
► Inputs associated with historical metal mine workings are the most important to the regional hydrosphere.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 159, Issue 12, December 2011, Pages 3484–3489
نویسندگان
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