| 造纸漂白废水中多氯联苯的测定 |
| 摘要点击 724 全文点击 1018 投稿时间：1994-04-10 |
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| 中文关键词 氯化漂白 造纸废水 多氯联苯 气相色谱 |
| 英文关键词 PCBs pulp bleaching effluents determination |
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| 中文摘要 |
| 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。 |
| 英文摘要 |
| 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. |
