Determination of Polychlorinated Biphenyls in Surface Water by Gas Chromatography-Mass Spectrometry
A gas chromatography-mass spectrometry(GCMS)method was developed for the determination of 18 polychlorinated biphenyls in surface water.Polychlorinated biphenyls in samples were extracted by liquid-liquid extraction method.After dehydration,concentration,purification and constant volume,the extracting solution was separated and detected by GCMS.The linearity of 18 PCBs was good in the range of 20～500 µg/L,the correlation coefficient was greater than 0.995.The limit of detection was 0.0006～0.0015 µg/L,and the limit of quantification was 0.0024～0.0060 µg/L.The experimental results show that this method has good sensitivity,high repeatability,and can accurately detect the contents of 18 PCBs in surface water.
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万方数据
维普
