主成分法分析济南市区土壤中多氯联苯残留

Principal component analysis to evaluate residual PCBs in the soil of Jinan City

为对济南市土壤中有机物污染程度进行综合评价,本文对济南市各县级市12个表层土壤样品中多氯联苯的12种同系物用气相色谱进行检测,对所得数据用SPSS 17.0程序进行主成分分析,在同系物水平上综合评价了济南市各县级市表层土壤中PCBs污染的贡献率、类型、同系物组成和可能的来源。结果表明:长清归德镇卫楼村、槐荫区裕兴北、章丘市龙山镇霍八村、槐荫济南炼油厂、长清平安店镇高垣墙村总的得分F比较高,说明这几个地方的表层土都受到了不同程度的多氯联苯的污染。

The 12 PCBs congeners of the 12 surface soil samples in Jinan county-level city were monitored by GC in order to give a comprehensive evaluation for the degree of organic pollution in the soil of Jinan. The study employed principal component analysis method with the 17.0 SPSS program and comprehensively evaluated the contribution rate, type, homologues composition and possible sources of PCBs in the surface soil of Jinan county-level city at level of homolog. Results show that total scores are higher in the Weilou Village of Guide Town in Changqing District, Yuxing North of Huaiyin District, Huoba Village of Longshan Town in Zhangqiu District, Jinan Refinery of Huaiyin District, Gaohuiqian Village of Pingan Town in Changqing District than that in other regions, which indicated that the surface soil were polluted by different levels of PCBs in several parts.