کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6331618 | 1619791 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Distributions and concentrations of thallium in surface waters of a region impacted by historical metal mining (Cornwall, UK)
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
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چکیده انگلیسی
Thallium is a highly toxic heavy metal whose concentrations and distributions in the aquatic environment are poorly defined. In this study, concentrations of aqueous and total Tl have been measured in water samples from a variety of rivers and effluents (the latter related to historical metal mining) in the county of Cornwall, SW England. Aqueous concentrations ranged from about 13 ng Lâ 1 in a river whose catchment contained no metal mines to 2640 ng Lâ 1 in water abstracted directly from an abandoned mine shaft. Concentrations of Tl in rivers were greatest in the vicinity of mine-related effluents, with a maximum value measured of about 770 ng Lâ 1. Thallium was not efficiently removed by the conventional, active treatment of mine water, and displayed little interaction with suspended particles. Its mobility in surface waters, coupled with concentrations that are close to a quality guideline of 800 ng Lâ 1, is cause for concern. Accordingly, we recommend that the metal is more closely monitored in this and other regions impacted by mining activities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volumes 473â474, 1 March 2014, Pages 139-146
Journal: Science of The Total Environment - Volumes 473â474, 1 March 2014, Pages 139-146
نویسندگان
Kristi Tatsi, Andrew Turner,