کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5747656 | 1618922 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Deposition behavior, risk assessment and source identification of heavy metals in reservoir sediments of Northeast China
ترجمه فارسی عنوان
رفتار رسوب، ارزیابی خطر و شناسایی منبع فلزات سنگین در رسوبات مخزن شمال شرقی چین
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کلمات کلیدی
فلزات سنگین، هسته های رسوب، رفتار رسوب، ارزیابی ریسک، شناسایی منبع،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
Sediment cores from five reservoirs, located in the Liaoning and Jilin Provinces in Northeast China, were collected to investigate the accumulation and potential toxicity of heavy metals (Fe, Mn, Cu, Cd, Pb, Zn, and Cr) during a sampling campaign in February, 2015. The results showed that all the detected metals accumulated significantly, especially Cd, compared to their respective background values. Among these reservoirs, Biliuhe Reservoir had markedly increasing trends for organic matter and all the metals, among which Mn was elevated by 280% to 3411Â mg/kg in a core of only 18Â cm in depth. Xinlicheng Reservoir was characterized by heavy siltation and varying metal distribution due to its regular geometric features and pulsed flood events. The Enrichment factor (EF) and geo-accumulation index (Igeo) indicated Cd was strongly enriched by anthropogenic inputs, with the values of EF and Igeo greater than 8 and 3, respectively. The toxicity assessment calculated using consensus-based sediment quality guidelines (SQGs) implied the whole cores of Tanghe and Dahuofang and the upper cores of Biliuhe, Xinlicheng and Fengman exhibited toxicity to sediment-dwelling organisms. Cr contributed more to Qm-PEC than the other heavy metals, because only Cr exceeded the probable effect concentration (PEC) despite its low enrichment. According to the results of correlation analysis (CA) and principal components analysis (PCA), mining industries and agricultural activities within the basin were the main anthropogenic pollution sources for these heavy metals.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 142, August 2017, Pages 454-463
Journal: Ecotoxicology and Environmental Safety - Volume 142, August 2017, Pages 454-463
نویسندگان
Lin Zhu, Jianwei Liu, Shiguo Xu, Zaigang Xie,