气相色谱法测定黄河底泥中多氯联苯及有机氯农药

Determination of PCBs and Organic Chloro Pesticides in River Huanghe Sediment by Chromatography

对黄河底泥样品中多氯联苯及有机氯农药，经索氏提取法处理后，用气相色谱法进行了测定，结果表明：（1）本方法的最低检出限为0.05-0.5ug/kg，达到了微量分析的要求。（2）采集的黄河底泥样品中，多氯联苯及有机氯农药污染较轻。（3）加标回收实验中，多氯联苯的回收率为68．8％－107％,有机氯农药的回收率为40．8％－81．1％。

Trace PCBs and organic chloro pesticides in River Huanghe sediment were extracted with Soxhlet method and then analyzed by GC. The result showed:①The detection limit of this method was 0.05-0.5μg/kg; ② the sediment samples from River Huanghe were only sligtly polluted; and ③ the recovery rate of PCBs was 68.8% ~ 107%, and of organic chloro pesticides was 40.8% - 81.1%.