主成分分析法在水生物二噁英污染来源解析中的应用  

Main Sources Analysis of Dioxins Pollution in Fishes by Principal Component Analysis

作　　者：王晓琳[1] 金军[1] 王英[1] 彭浩[1] 

机构地区：[1]中央民族大学生命与环境科学学院

出　　处：《环境与健康杂志》2007年第8期592-594,共3页Journal of Environment and Health

基　　金：教育部科学技术研究重点资助项目(105173);中央民族大学985工程重点资助项目(CUN985-3-3)

摘　　要：目的分析水生生物样品中二噁英的污染来源,为有针对性地治理二噁英的污染源提供理论依据。方法检索Sciencedrict数据库中相关的二噁英主要污染源及各国水生生物样品中二英的数据,以样品中二英同族体含量的相对值为变量,利用环境计量学中主成分分析方法对其进行分析。结果污染释放源分析结果显示,工业源中第一主成分占有较大比例,而化学源中第二主成分占有较大比例;化学源、热源、非生物底质源、工业源有较好的分离;不同的非生物底质源在组成成分上有较大的相似性;氯碱工业石墨电极废渣底泥与其他化学源的组成成分有较大不同。水生生物样品分析结果显示,日本水户市水生生物体内的二噁英污染主要来自于非生物底质源和热源;韩国南部Masan地区水生生物体内的二噁英污染介于热源和化学源之间;美国Georgia地区的二噁英污染可能既有热源又有工业源的污染;中国某海域水生生物体内的二英污染主要来源于化学源。结论主成分分析法是识别二噁英化学污染释放源的较好方法,不同国家、地区水生生物体内二噁英的污染来源各不相同。Objective To analyze the main sources of dioxins pollution in fishes samples. Methods The principal components analysis was employed to identify different dioxin emission sources data and to analyze the environmental and aquatic samples. The Principal Component Analysis seems to be a powerful tool for source identification with the ratio of each concentration of the 2,3,7,8-subtituted congener to the concentration of the total 2,3,7,8-subtituted congeners. Results The result obtained from Principal Component Analysis showed that there were different dioxin compositions between chemical emission sources and other emission sources. Conclusion The pollution sources of PCDD and PCDF polluted aquatic life from different countries,regions are not the same.

关 键 词：二(噁)英 主成分分析 同族体 水生生物 

分 类 号：R123.2[医药卫生—环境卫生学]