摘要
为掌握小浪底库区淤积泥沙重金属污染情况,采用低扰动柱状深层取样设备,在小浪底库区部分断面开展现场取样试验,首次获取了主河槽深层淤积泥沙样品,分析了样品中重金属元素的含量及分布特征。采用地质累积指数法和潜在生态危害指数法,分析了小浪底库区深层淤积泥沙的重金属污染程度和潜在风险程度。结果表明,重金属含量从高到低排列为Cr(铬)>Pd(钯)>As(砷)>Cd(镉)>Hg(汞),小浪底库区淤积泥沙重金属含量具有随着深度增加而增大的趋势,大部分断面处于无污染状态,但各监测点的风险程度多处于中等生态风险。研究成果可为黄河水沙规律研究、黄河调水调沙和机械生态清淤等工作的开展提供重要基础资料。
In order to understand the heavy metal pollution of sediment in Xiaolangdi Reservoir, the field samplings are carried out in the typical sections by using low disturbance columnar deep sampling equipment, and the deep sediment samples in main channel are obtained for the first time. The content of heavy metal elements and their distribution characteristics are analyzed. In order to analyze the heavy metal pollution degree and potential risk degree, the geological accumulation index method and potential ecological harm index method are used. The results show that the content of each tested metal occurred from high to low in the order of Cr 〉 Pd 〉 As 〉 Cd 〉 Hg and the heavy metal contents of sediment are increased with the increase of depth, and most sections are in the condition of non-pollution, but the level of risk for most monitoring point is in the moderate ecological risk. The research results will provide important basic data for water and sediment research and regulation and mechanical ecological dredging experiment in Yellow River.
出处
《水力发电》
北大核心
2015年第12期5-9,共5页
Water Power
基金
水利部公益性行业科研专项(201301024)
中国保护黄河基金会资助项目(CYRF2013-003)
科技部科研院所技术开发研究专项(2013EG136205)
关键词
重金属污染
深层取样
淤积泥沙
小浪底库区
heavy metal pollution
deep sampling
sediment
Xiaolangdi Reservoir
