کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4476843 1622767 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mercury contamination history of an estuarine floodplain reconstructed from a 210Pb-dated sediment core (Berg River, South Africa)
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
پیش نمایش صفحه اول مقاله
Mercury contamination history of an estuarine floodplain reconstructed from a 210Pb-dated sediment core (Berg River, South Africa)
چکیده انگلیسی

Mercury deposition histories have been scarcely documented in the southern hemisphere. A sediment core was collected from the ecologically important estuarine floodplain of the Berg River (South Africa). We establish the concentration of Hg in this 210Pb-dated sediment core at <50 ng g−1 HgT throughout the core, but with 1.3 ng g−1 methylmercury in surface sediments. The 210Pb dating of the core provides a first record of mercury deposition to the site and reveals the onset of enhanced mercury deposition in 1970. The ratio of methylmercury to total mercury is relatively high in these sediments when compared to other wetlands.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Pollution Bulletin - Volume 59, Issues 4–7, 2009, Pages 116–122
نویسندگان
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