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.
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)
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
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
river sediment
heavy metal pollution
single factor pollution index method
Tessier continuous extraction method
