环境样品中PCBs的测定

Analysis of PCBs in environmental samples

通过碱解、酸洗、萃取、净化、浓缩、脱硫等步骤处理实际样品 ,利用毛细管柱 GC/ ECD进行 PCBs的定性和定量。方法定性准确 ,定量良好 ,具有较高的回收率。各同系物的方法检出限 ,水样为 0 .0 1～ 0 .0 8ng/ L;土壤样为 0 .0 0 3～0 .0 3μg/ kg,可以应用于土壤、沉积物、水样、油样等环境样品中

We used basic decomposition, acid cleanup, liquid liquid extract, silica gel cleanup, concentration, sulful cleanup, etc to treat the environmental samples and analyzed the PCBs with a gas chromatography(GC) equipped with a capillary column/ electron capture detector(ECD) This method had accurate qualitative and quantitative identification and high recovery The MDL for Aroclors congeners varied in the range of 0 01 to 0 08ng/L in water and 0 003 to 0 03μg/kg in soils The method can applied in analyses of PCBs in water, soils, sediments, waste soil, etc