东南大学学报（自然科学版）2017，Vol.47Issue(4)：825-831,7.DOI:10.3969/j.issn.1001-0505.2017.04.030
典型多氯联苯在太湖底泥微环境中的脱氯降解
Dechlorination of typical polychlorinated biphenyl congeners in Taihu Lake sediment microcosms
摘要
Abstract
Dechlorination of 9 commercially available polychlorinated biphenyl(PCB) congeners including PCB5, PCB12, PCB64, PCB71, PCB105, PCB114, PCB149, PCB153 and PCB170 was examined in Taihu Lake sediment microcosms in a time course of 24 weeks.The results show that native microorganisms in Taihu Lake sediments are capable of dechlorinating PCBs;the nine added cogeners exhibit different extent of dechlorination;total PCBs in slurry reduce from (49.56±0.38) mg/kg to (42.19±0.14)mg/kg;Para and meta removals are prevalent.The dominant observed dechlorination products include PCB1, PCB2, PCB25, PCB32, PCB47, PCB49, PCB52, PCB66, PCB90, PCB99, PCB101 and PCB102.After 24 weeks of incubation, the total TEQs reduce from (297±2)pg/g to (21±5)pg/g.Dechlorination leads to a reduction of TEQs by 92.9%, suggesting an apparent environmental detoxification.关键词
太湖/多氯联苯/底泥/微生物脱氯Key words
Taihu Lake/polychlorinated biphenyl/sediment/microbial dechlorination分类
资源环境引用本文复制引用
许妍,刘莎,徐磊,陈曦,周亚子,秦庆东..典型多氯联苯在太湖底泥微环境中的脱氯降解[J].东南大学学报（自然科学版）,2017,47(4):825-831,7.基金项目
国家自然科学基金资助项目(41671468,41301546,51408119)、南京大学污染控制与资源化国家重点实验室开放基金资助项目(PCRRF16018). （41671468,41301546,51408119）
