کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4406802 1307320 2016 7 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله
Spatial distribution, environmental assessment and source identification of metals content in surface sediments of freshwater reservoir, Pakistan
ترجمه فارسی عنوان
توزیع فضایی، ارزیابی زیست محیطی و شناسایی منبع محتوای فلزات در رسوبات سطحی دریاچه آب شیرین، پاکستان
کلمات کلیدی
فلز؛ ارزیابی ریسک، آلودگی؛ شاخص بار آلودگی هوا؛ تحلیل چندمتغیره؛ پاکستان
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
چکیده انگلیسی

Surface sediments were collected from different sites of a freshwater reservoir, Pakistan, and analyzed for eight metals (Cd, Co, Cr, Cu, Fe, Mn, Pb and Zn) using flame atomic absorption spectrometry. The estimated metals levels were found higher than other reported studies. The environmental indices including geoaccumulation index, enrichment factor and contamination factor identified Cd, Co, Pb and Zn as the priority pollutants of concern. Chromium, Cu and Mn were also found to be enriched in some areas. The pollution load index (≥1) indicated progressive deterioration of the sediments quality. Principal component and cluster analyses revealed that Cd, Co, Pb and Zn were mainly originated from agricultural activities, domestic wastes, road runoffs and recreational activities. Chromium, Cu, Fe and Mn were mainly derived from natural sources though Cr, Cu and Mn were partially contributed by human inputs. Based on spatial distribution, inlet and middle sites of the reservoir were found more contaminated. This study would drive urgent attention to develop preventive actions and remediation processes for aquatic system protection and future restoration of the reservoir.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemie der Erde - Geochemistry - Volume 76, Issue 1, March 2016, Pages 171–177
نویسندگان
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