کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4407947 1618825 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Continuous-flow leaching in a rotating coiled column for studies on the mobility of toxic elements in dust samples collected near a metallurgic plant
ترجمه فارسی عنوان
اشباع جریان مداوم در ستون چرخشی دوار برای مطالعات در مورد تحرک عناصر سمی در نمونه های گرد و غبار جمع آوری شده در نزدیکی گیاه متالورژی
کلمات کلیدی
گرد و غبار سپرده در هوا، انتشار گاز مایع، عناصر سمی، اشباع پویا، چرخش ستون چرخشی، باران اسیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی


• Dynamic leaching was applied to studies on the mobility of toxic elements in dust.
• Atmospherically deposited dust samples collected near a copper smelter were studied.
• Water and simulated “acid rain” were used as eluents.
• Up to 1.5, 4.1, 1.9, 11, and 46% of Pb, As, Cu, Zn, and S can be mobilized by water.
• Simulated acid rain results in higher recoveries of elements, except Cu and Pb.

Continuous-flow (dynamic) leaching in a rotating coiled column has been applied to studies on the mobility of Zn, Cd, Cu, Pb, Ni, Sb, As, S, and other potentially toxic elements in atmospherically deposited dust samples collected near a large copper smelter (Chelyabinsk region, Russia). Water and simulated “acid rain” (pH 4) were used as eluents. The technique enables not only the fast and efficient leaching of elements but as well time-resolved studies on the mobilization of heavy metals, sulphur, and arsenic in environmentally relevant forms to be made. It is shown that up to 1.5, 4.1, 1.9, 11.1, and 46.1% of Pb, As, Cu, Zn, and S, correspondingly, can be easily mobilized by water. Taking into consideration that the total concentrations of these elements in the samples under investigation are surprisingly high and vary in the range from 2.7 g/kg (for arsenic) to 15.5 g/kg (for sulphur), the environmental impact of the dust may be dramatic. The simulated acid rain results in somewhat higher recoveries of elements, except Cu and Pb. The proposed approach and the data obtained can very useful for the risk assessment related to the mobility of potentially toxic elements and their inclusion in the biogeochemical cycle.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 146, March 2016, Pages 371–378
نویسندگان
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