کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6315770 1619157 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cd isotope fractionation during simulated and natural weathering
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Cd isotope fractionation during simulated and natural weathering
چکیده انگلیسی
In practice, stable Cd isotope ratios are being applied to trace pollution sources in the natural environment. However, Cd isotope fractionation during weathering processes is not yet fully understood. We investigated Cd isotope fractionation of PbZn ore in leaching experiments and in the environment under natural weathering processes. Our leaching experiments demonstrated that the leachate was enriched with heavy Cd isotopes, relative to initial and residual samples (Δ114/110Cdleachate − initial state = 0.40-0.50‰, Δ114/110Cdleachate −residual state = 0.36-0.53‰). For natural samples, δ114/110Cd values of stream sediments were higher than those of the corresponding soil samples collected from the riverbank, Δ114/110Cdstream sediment −soil can be up to 0.50‰. This observation is consistent with our leaching experiments, which indicate significant Cd isotope fractionation during natural weathering processes. Therefore, natural contributions should be considered when using Cd isotopes to trace anthropogenic pollution in water and sediment systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 216, September 2016, Pages 9-17
نویسندگان
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