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目的建立吹扫捕集-气相色谱/质谱联用仪(P&T-GC/MS)同时分析生活饮用水中多组分微量VOCs的方法。方法采用吹扫捕集-气相色谱/质谱联用仪(P&T-GC/MS)同时分析生活饮用水中26种微量VOCs。结果本方法具有较高的灵敏度和较广的分析范围,方法的线性范围为0.5μg/L~80μg/L,最低检出浓度可达0.01μg/L~0.1μg/L,相对标准偏差为2.1%~8.7%,加标回收率在90%~110%之间。结论本方法是快速、灵敏的,适合于生活饮用水中多组分微量VOCs的同时分析。
Objective To establish a method for the simultaneous determination of trace components of VOCs in domestic drinking water by purge and trap - gas chromatography / mass spectrometry (P & T-GC / MS). Methods Twenty-six trace VOCs in drinking water were simultaneously analyzed by purge and trap-gas chromatography / mass spectrometry (P & T-GC / MS). Results The method has high sensitivity and wide range of analysis. The linear range of this method is 0.5μg / L ~ 80μg / L, the minimum detectable concentration is 0.01μg / L ~ 0.1μg / L and the relative standard deviation is 2.1 % ~ 8.7%, spiked recoveries between 90% ~ 110%. Conclusion The method is rapid and sensitive and suitable for the simultaneous analysis of multi-component trace VOCs in drinking water.