半渗透膜采样技术监测城市污水处理流程中的难降解有毒有机污染物

Application of Semipermeable Membrane Devices(SPMDs)to Monitor PCBs and PAHs in the Wastewater of the Sewage Treatment Procedure

应用新型半透膜采样技术（ＳＰＭＤ），监测某城市污水处理流程中８个点污水中两类难降解有毒有机污染物多氯联苯（ＰＣＢ）和多环芳烃（ＰＡＨ），同时同地采集水样，气相色谱质谱联机，选择性离子扫描方式对各ＰＣＢ异构体和ＰＡＨ定性定量。与水样液液萃取相比，ＳＰＭＤ采样技术显著提高了分析的准确度。根据测定的采样器中污染物浓度，推算采样期间该点污水中的平均浓度，与瞬间水样分析结果符合程度较好。

Semipermeable membrane devices(SPMDs)were used to monitor PCBs and PAHs in the sewage treatment procedure at eight sites,the water was sampled at each sites simultaneously.Water and SPMD samples were analyzed by GC\|MS(SIM).Concentrations of PCBs and PAHs in the water at all sites estimated by concentrations determined in SPMDs,were compared with concentrations determined in water samples,which inferred that SPMDs could be used to qualify these priority pollutants and quantitate their concentrations in the sewage of sewage treatment procedure to some extent.