造纸漂白废水中多氯联苯的测定

介绍了造纸氯化漂白废水中痕量多氯联苯的测定方法，采用国产ＧＤＸ－５０１树脂进行富集，经素氏提取，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。

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

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.