天津市州河水质及其底泥重金属污染评价  

Evaluation on water quality and heavy metal contamination of sediments in Zhouhe River of Tianjin City

作　　者：王卫星[1] 曹淑萍[1] 李攻科[1] 高洪生[1] 张岩[2] 

机构地区：[1]天津市地质调查研究院,天津300191 [2]天津市地质矿产测试中心,天津300191

出　　处：《物探与化探》2017年第2期322-327,共6页Geophysical and Geochemical Exploration

基　　金：中国地质调查局项目(12120113002000);天津市国土资源和房屋管理局项目(国土房任[2014]32号)

摘　　要：随着城镇化的快速发展,我国很多城镇河道的水环境和底泥也受到污染。州河是天津市蓟县境内最大的一条河流,近十多年来,其河水受到污染,河流生态环境恶化。以蓟县境内州河河水及其底泥采样分析数据为依据,评价了州河水质及其底泥重金属污染状况,为州河水环境综合治理提供科学依据。依据农田灌溉水质标准评价结果,州河上游河水适合于农业灌溉,下游河水不适用于农业灌溉。基于底泥质量基准法评价结果,州河底泥Cr、Ni受到中等污染,上游底泥Hg受到严重污染,Zn、Cu受到中等污染;基于底泥地质累积指数法评价结果,州河上游底泥Cd、Cu、Zn处于无—中度污染级别,Hg处于强度污染级别;综合两种评价结果,州河底泥中重金属主要污染元素为Hg、Ni、Cr,次要污染元素为Zn、Cd、Cu。With the rapid development of urbanization,water environment and sediments of many urban rivers have been polluted in China. The Zhouhe River is the largest river in Jixian County,Tianjin,but the river has been polluted over the past 10 years,which made the ecological environment worse. In this paper,the water quality and the pollution of heavy metals in sediments were evaluated for water and its sediments in the Zhouhe River of Jixian County as the medium to provide scientific basis for the comprehensive management of water environment in the future. The research shows that the river water is suitable for agricultural irrigation,but the downstream water is not suitable for agricultural irrigation. The evaluation based on sediment quality standard method shows that Cr,Ni in the sediments have caused moderate pollution,Hg in the upstream sediments has caused serious pollution,and Zn,Cu in the upstream sediments have caused moderate pollution. Results based on the sediment geological accumulation index show that Hg,Zn and Cd in the upper reaches of the river are at the level of Cu,and the intensity of the grade is in the intensity of the country; Cd,Cu,Zn in the upstream sediments are at the level of non-moderate pollution,and Hg is at the level of intense pollution. Comprehensive evaluation of two results show that the major pollutions of heavy metals are Hg,Ni,Cr,and the secondary pollutions of heavy metals are Zn,Cd,Cu in the sediments in Zhouhe River.

关 键 词：州河 水质 底泥 重金属 污染评价 

分 类 号：P632[天文地球—地质矿产勘探]