漳河上游表层沉积物重金属形态与风险评价  

Chemical Fractions of Heavy Metals in Surface Sediments from Upper Reaches of Zhanghe River and Risk Assessment

作　　者：高朋阳 赵东亮[3] 武金坤[1,2] 王雨春 程瑶 GAO Pengyang;ZHAO Dong-liang;WU Jin-kun;WANG Yu-chun;CHENG Yao(School of Water Conservancy and Hydroelectric Power,Hebei University of Engineering,Handan 056038,China;Hebei Key Laboratory of Inteligent Water Conservancy,Handan 056038,China;China Water Resources Beifang Investigation,Design and Research Co.Ltd.,Tianjin 300222,China;State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research,Beijing 100038,China)

机构地区：[1]河北工程大学水利水电学院,河北邯郸056038 [2]河北省智慧水利重点实验室,河北邯郸056038 [3]中水北方勘测设计研究有限责任公司,天津300222 [4]中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038

出　　处：《水电能源科学》2023年第2期40-44,共5页Water Resources and Power

基　　金：国家自然科学基金项目(U1802241,U20402,92047204,11371117);河北省自然科学基金创新研究群体项目(E2020402074);河北省高等学校技术研究项目(ZD2019005);河北省研究生创新基金(CXZZBS2020152,CXZZSS2021090)。

摘　　要：为揭示漳河上游表层沉积物重金属的污染特征,测定了32个点位样本的Cr、As、Cd、Pb形态和含量,采用次生相与原生相比值法和风险评估编码法评估潜在生态风险,相关性分析用以分析重金属来源。结果表明,重金属Cr、As、Cd、Pb的平均含量分别为91.51±24.30、9.81±3.05、0.12±0.05、18.30±5.43 mg/kg,仅Cd平均含量未超过背景值;Cd可交换态占比大于Cr、As、Pb,生化活性相对较高;重金属潜在风险依次为Cd>Pb>As>Cr,风险集中在浊漳源头及清漳西源;4种重金属主要来源于矿产开采,采矿活动贡献了重金属含量和潜在风险。In order to reveal the pollution characteristics of heavy metals in surface sediments in the upper reaches of the Zhanghe River, the chemical fractions and contents of Cr, As, Cd and Pb in 32 samples were determined. The potential ecological risks were assessed by rations of secondary phase and primary phase, and risk assessment code method. The correlation analysis was used to analyze the sources of heavy metals. The results show that the average contents of heavy metals Cr, As, Cd and Pb are 91.51±24.30,9.81±3.05,0.12±0.05,18.30±5.43 mg/kg, respectively, and only the average contents of Cd do not exceed the background value. Only the content of Cd does not exceed the background value. The exchangeable fraction of Cd is larger than Cr, As, and Pb, and its biochemical activity is relatively high. The potential risks of heavy metals are sorted as Cd>Pb>As>Cr, and the risks are mainly concentrated in the source of Zhuozhang River and the west headwater of Qingzhang River. These four heavy metals mainly come from mineral exploitation, and mining activities contribute to the content and potential risks of heavy metals.

关 键 词：漳河上游 表层沉积物 重金属形态 风险评价 来源分析 

分 类 号：TV213.4[水利工程—水文学及水资源] X522[环境科学与工程—环境工程]