کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
579358 1453139 2011 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tungsten and other heavy metal contamination in aquatic environments receiving wastewater from semiconductor manufacturing
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Tungsten and other heavy metal contamination in aquatic environments receiving wastewater from semiconductor manufacturing
چکیده انگلیسی
Through analyses of water and sediments, we investigate tungsten and 14 other heavy metals in a stream receiving treated effluents from a semiconductor manufacturer-clustered science park in Taiwan. Treated effluents account for ∼50% of total annual river discharge and <1% of total sediment discharge. Dissolved tungsten concentrations in the effluents abnormally reach 400 μg/L, as compared to the world river average concentration of <0.1 μg/L. Particulate tungsten concentrations are up to 300 μg/g in suspended and deposited sediments, and the corresponding enrichment factors are three orders of magnitude higher than average crust composition. Surprisingly, the estimated amount of tungsten exported to the adjacent ocean is 23.5 t/yr, which can approximate the amount from the Yangtze River should it be unpolluted. This study highlights the urgency of investigating the biological effect of such contamination.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 189, Issues 1–2, 15 May 2011, Pages 193-202
نویسندگان
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