河流底泥中砷汞镉污染评价及其形态分布研究  

Evaluation of Arsenic,Mercury,and Cadmium Pollution in River Sediments and Their Speciation Distribution

作　　者：申中华 祝子惠 翟代廷 李成刚 赵文杰 王立艳 SHEN Zhong-hua;ZHU Zi-hui;ZHAI Dai-ting;LI Cheng-gang;ZHAO Wen-jie;WANG Li-yan(Shandong Zhengyuan Geological Resources Exploration Co.,Ltd.,Jinan 250101,China;Testing Center of Shandong Bureau of China Metallurgical Geology Bureau,Jinan 2500141,China;Geological Analysis and Testing Engineering Laboratory of Shandong Province,Jinan 2500141,China;Shandong Provincial NO.4 Institute of Geological and Mineral Survey,Weifang 2610211,China;Shandong 5th Geo-Mineral Prospecting Institute,Taian 2710001,China)

机构地区：[1]山东正元地质资源勘查有限责任公司,山东济南250101 [2]中国冶金地质总局山东局测试中心,山东济南250014 [3]山东省地质分析测试工程实验室,山东济南250014 [4]山东省第四地质矿产勘查院,山东潍坊261021 [5]山东第五地质矿产勘查院,山东泰安271000

出　　处：《河北地质大学学报》2020年第4期53-59,共7页Journal of Hebei Geo University

摘　　要：在山东省某河流底泥现状勘察过程中采集了183个柱状样品进行化验分析,确定重金属污染元素主要为As、Hg和Cd,采用单因子污染指数法对其污染程度进行分析评价,划分出1.6 km向下游至2.3 km河段污染达到中度以上程度,2.3 km向下游6.0 km河段污染程度减轻。通过对底泥粒径分布规律得出As主要分布在≤300μm底泥粒径及≥4760μm底泥粒径中;Cd主要分布在≤300μm底泥粒径及≥4760μm底泥粒径中;Hg主要分布在≤150μm底泥粒径及≥4760μm底泥粒径中。按照Tessier连续提取法分析底泥赋存形态得出As、Hg主要以残渣态形式存在;Cd主要以铁锰氧化态形式存在。In the process of surveying the sediments of a river in Shandong Province,183 sediment samples were collected for laboratory analysis.The single factor pollution index method was used to analyze and evaluate the main heavy metal pollution elements in a 6.0 km length of a river in Shandong Province as As,Hg and Cd.According to the species,the pollution from 1.6 km downstream to 2.3 km is moderately above,and the pollution from 2.3 km downstream to 6.0 km is reduced.Through the distribution law of the sediment size,it is found that As is mainly distributed in the≤300μm sediment particle size and≥4760μm sediment particle size;Cd is mainly distributed in the≤300μm sediment particle size and≥4760μm sediment particle size;Hg mainly It is distributed in the particle size of≤150μm and the particle size of≥4760μm.According to the continuous extraction method of Tessier,the As and Hg are mainly in the form of residual state;Cd is mainly in the form of iron-manganese oxidation state.

关 键 词：河流底泥 重金属污染 单因子污染指数法 TESSIER连续提取法 

分 类 号：X52[环境科学与工程—环境工程]