吹扫捕集-气相色谱/质谱法分析汉江有机污染物

Detection of Organic Pollutants in the Hanjiang River Using Purge-and-Trap(P&T) Concentration Coupled to Gas Chromatography-Mass Spectrometry

采用恒温水浴吹扫捕集-气相色谱/质谱(P&T-GC/MS)法分析汉江水中挥发性有机物,提高了挥发性有机物分析的灵敏度;选用低空白的纯净水,降低了分析的干扰。采用避光的方法以及将水样直接过柱,提高了半挥发性有机物的回收率。用改进了的方法分析汉江水共检出有机物36种。此方法同样适用于其它地表水中有机物的分析。

Purge-and-trap（PT） concentration coupled to gas chromatography-mass spectrometry（PT-GC/MS） was used to analyze the organic pollutants in Han River.Purified water was used to decrease the interferences,and the recoveries were enhanced by directly extracting the water samples through a C18 column under a sunlight-free condition.36 volatile organic compounds（VOCs） and semivolatile organic compounds（SVOCs） were detected.This technique would also be used to analyze VOCs and SVOCs in other water samples.