Risk assessment and seasonal variations of dissolved trace elements and heavy metals in the Upper Han River, China
Risk assessment and seasonal variations of dissolved trace elements and heavy metals in the Upper Han River, China
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DOI：
10.1016/j.jhazmat.2010.05.120
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发表时间：
2010-09-15
影响因子：
13.6
通讯作者：
Zhang, Quanfa
中科院分区：
文献类型：
--
作者：
Li, Siyue;Zhang, Quanfa
在2005 - 2006年期间，从整个汉河的42个采样地点收集地表水样品。使用电感耦合等离子体原子发射光谱（ICP-AES）确定痕量金属的浓度，以进行季节性变异性和初步风险评估。结果表明，11种重金属的浓度显示出明显的季节性，大多数变量在雨季表现出更高的水平。主成分分析（PCA）和因子分析（FA）表明，在另一个季节，管理水质的变量可能并不重要。然后，使用危险商（HQ）和致癌风险评估人类健康金属的风险，并指出与HQ> 1和致癌风险> 10（-4）一样，是最重要的污染物，导致了非癌和致癌问题，特别是儿童。慢性风险的前五个最大元素在旱季时为PB，V。SE和SB，而在雨季中，它们是AS，V，V，CO，PB和SB。这项评估将有助于建立减少污染物的减少目标和最大每日负荷，从而有助于保留汉河流域的公共卫生，并为山间山间的水分转移项目制定节水策略。 （c）2010 Elsevier B.V.保留所有权利。
Surface water samples were collected from 42 sampling sites throughout the upper Han River during the time period of 2005-2006. The concentrations of trace metals were determined using inductively coupled plasma-atomic emission spectrometry (ICP-AES) for the seasonal variability and preliminary risk assessment. The results demonstrated that concentrations of 11 heavy metals showed significant seasonality and most variables exhibited higher levels in the rainy season. Principal component analysis (PCA) and factor analysis (FA) revealed that variables governing water quality in one season may not be important in another season. Risk of metals on human health was then evaluated using Hazard Quotient (HQ) and carcinogenic risk, and indicated that As with HQ > 1 and carcinogenic risk > 10(-4), was the most important pollutant leading to non-carcinogenic and carcinogenic concerns, in particular for children. The first five largest elements to chronic risks were As, Pb, V. Se and Sb, in the dry season, while they were As, V, Co, Pb and Sb in the rainy season. This assessment would help establish pollutant loading reduction goal and the total maximum daily loads, and consequently contribute to preserve public health in the Han River basin and develop water conservation strategy for the interbasin water transfer project. (C) 2010 Elsevier B.V. All rights reserved.