水体重金属污染分布解析
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摘要
本次水体重金属污染分布解析以矿山废水为分析对象,分析了重金属浸出量与各形态间的相关性以及有机质与有机结合态的相关性,并通过红外谱图分析了有机质与重金属结合的机理。调查发现,Cu、Zn、Cd和Pb的溶解态、悬浮态及总量沿河流断面呈相似的空间分布规律,而As则略有不同。沉积物中,5种重金属元素都以残渣态为主要存在形态,Cd和Pb的可交换态及Cu和Zn的有机态含量很高,说明这4种元素对环境都有一定的潜在威胁性。
The distribution of heavy metal pollution in water was analyzed with mine wastewater as the object of analysis.The correlation between leaching amount of heavy metals and various forms, and the correlation between organic matter and organic binding state were analyzed. The mechanism of organic matter and heavy metal binding was analyzed by infrared spectroscopy. The results show that the dissolved state, suspended state and total amount of Cu, Zn, Cd and PB are similar in spatial distribution along the river section, while As is slightly different. In the sediments, the residue form is the main form of the five heavy metal elements, and the exchangeable form of Cd and PB and the organic state content of Cu and Zn are very high, which indicates that these four elements have a certain potential threat to the environment.
The distribution of heavy metal pollution in water was analyzed with mine wastewater as the object of analysis.The correlation between leaching amount of heavy metals and various forms, and the correlation between organic matter and organic binding state were analyzed. The mechanism of organic matter and heavy metal binding was analyzed by infrared spectroscopy. The results show that the dissolved state, suspended state and total amount of Cu, Zn, Cd and PB are similar in spatial distribution along the river section, while As is slightly different. In the sediments, the residue form is the main form of the five heavy metal elements, and the exchangeable form of Cd and PB and the organic state content of Cu and Zn are very high, which indicates that these four elements have a certain potential threat to the environment.
引文
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6张恩仁,张经.长江河口悬浮物对几种重金属吸附的pH效应[J].海洋与湖泊,2017,34(3):267-273.
2周建民,党志,蔡美芳,等.大宝山矿区污染水体中重金属的形态分布及迁移转化[J].环境科学研究,2016,18(5):5-10.
3 Kim J Y,Chan H T.Pollution of a water course impacted by acid mine drainage in the Imgok creek of the Gangreung coal field,Korea[J].Applied Geochemistry,2016,16(11):1387-1396.
4 Rauret G,Lopez-Sanehez J F,Sahuquillo A,etal.Impro vement of the BCR three step sequential extraction procedure prior to the certification of new sediment and soil reference materials[J].Environment Monitoring and Assessment,2017,(1):57-61.
5 Tessier A,Campbell P G C,Bisson M.Sequential extraction procedure for the speciation of particulate trace metals[J].Analytical Chemistry,2017,51(7):844-851.
6张恩仁,张经.长江河口悬浮物对几种重金属吸附的pH效应[J].海洋与湖泊,2017,34(3):267-273.