向第一色谱柱(10)添加油性液体至获得多氯联苯类抽提液所需要的时间通常为2 ~ 10小时左右的短时间。

The time required for obtaining the polychlorinated-biphenyl extract after addition of the oily liquid to the first column (10) is generally as short as about 2-10 hours.

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采用加速溶剂萃取（ASE）—气相色谱法测定土壤中的12种类二恶英多氯联苯。

12 kinds of dioxin-like polychlorinated biphenyls(PCBs)in soil were determined by accelerated solvent extraction(ASE)and gas chromatography method.

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