Assessment of heavy metal contamination in urban river sediments in the Jiaozhou Bay catchment, Qingdao, China
Assessment of heavy metal contamination in urban river sediments in the Jiaozhou Bay catchment, Qingdao, China
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青岛胶州湾流域城市河流沉积物重金属污染评价
DOI：
10.1016/j.catena.2016.11.004
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发表时间：
2017-03
期刊：
影响因子：
6.2
通讯作者：
Tian Xu
中科院分区：
文献类型：
--
作者：
Xu Fangjian;Liu Zhaoqing;Cao Yingchang;Qiu Longwei;Feng Jianwei;Xu Feng;Tian Xu
对胶州湾流域47个河流沉积物样品中Cu、Pb、Zn、Cr、Cd和As等重金属元素的空间分布特征及其潜在生态风险进行了评价。沉积物中的重金属浓度范围为：Cu 4.5-178.7 mg kg− 1，Pb 8.2-65.8 mg kg− 1，Zn 8.2-325.7 mg kg− 1，Cr 12.2-185.5 mg kg− 1，Cd 0.013-1.486 mg kg− 1，As 1.2-20.6 mg kg− 1。结果表明，该海域沉积物质量总体符合中国海洋沉积物质量标准。根据影响范围分类（阈值效应水平（TEL）/可能效应水平（PEL）沉积物质量指南，铜，铬，砷可能对当地水生生态系统的不利生物影响。地质累积指数（Igeo），富集因子（EF），污染因子（CF）和污染负荷指数（PLI）值表明，Cd，As和Pb污染水平升高发生在东部JZB流域（即，洪江、墨水河、白沙河、楼山河、李村河、海坡河）。本研究介绍了JZB流域沉积物质量的现状。这些结果可能有助于确定未来专门针对监测重金属污染的沿海和河流管理措施。
Selected heavy metals (Cu, Pb, Zn, Cr, Cd, and As) in 47 river sediment samples collected in the Jiaozhou Bay (JZB) catchment were evaluated to assess their spatial distributions and the potential ecological risks. The heavy metal concentrations in the sediments ranged from 4.5–178.7 mg kg− 1for Cu, 8.2–65.8 mg kg− 1for Pb, 8.2–325.7 mg kg− 1for Zn, 12.2–185.5 mg kg− 1for Cr, 0.013–1.486 mg kg− 1for Cd, and 1.2–20.6 mg kg− 1for As. The results showed that the overall sediment quality in the area generally met the China Marine Sediment Quality criteria. Based on the effect-range classification (the threshold effect level (TEL)/probable effect level (PEL) Sediment Quality Guidelines, Cu, Cr, and As were likely to have adverse biological impacts on local aquatic ecosystems. The geoaccumulation index (Igeo), enrichment factor (EF), contamination factor (CF), and pollution load index (PLI) values suggested that elevated levels of Cd, As, and Pb contamination occurred in the eastern JZB catchment (i.e., Hongjiang River, Moshui River, Baisha River, Loushan River, Licun River, and Haipo River). This study presents the current state of the sediment quality in the JZB catchment. The results may assist in the definition of future coastal and river management measures specifically targeted at monitoring heavy metal contamination.
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