造纸漂白废水中多氯联苯的测定  

Determination of Polychlorinated Biphenyls (PCBs) in the Effluent from a Pulp Bleaching Process

作　　者：杨春[1] 姚渭溪[1] 

机构地区：[1]中国科学院生态环境研究中心

出　　处：《环境科学》1994年第6期63-65,共3页Environmental Science

基　　金：国家自然科学基金

摘　　要：介绍了造纸氯化漂白废水中痕量多氯联苯（ＰＣＢｓ）的测定方法。采用国产ＧＤＸ－５０１树脂进行富集，经索氏提取、浓硫酸洗涤和去活化的氧化铝－硝酸银硅胶层析柱净化后，用毛细管气相色谱法测定。实验结果表明，造纸氯化漂白废水中产生的ＰＣＢｓ为１０－９级，且以低氯取代产物为主。方法回收率在６０％以上。Trace PCBs in the effluent from a pulp bleaching process with liquid chlorine or deactivated chlorinated lime were quantitatively determined with a method in which the samples were enriched by using a resin GDX-501, then extracted, washed with a concentrated sulfuric acid, and cleaned up over a deactivated alumina-silver nitrate-siliCa gel column before determination using a gas chromatography with a capillary and an electron capture detector. The PCBs in the effluent were found to be at a level in the range of 10-12-10-9 and to consist of dominant PCBs substituted with less (2 or 3) chlorines.

关 键 词：氯化漂白 造纸废水 多氯联苯 气相色谱 废水处理 

分 类 号：X793.03[环境科学与工程—环境工程] X132