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目的:探讨生活饮用水及其水源水中主要的致嗅物质(2-甲基异莰醇和土嗅素)的测定方法。方法:采用固相微萃取纤维吸附样品中的致嗅物质,用气相色谱-质谱联用仪分离测定。结果:方法的最低检测质量浓度分别为:2-甲基异莰醇0.15 ng/L,土嗅素0.10 ng/L;加标回收率分别为:2-甲基异莰醇96.0%～99.6%,土嗅素97.0%～101%;相对标准偏差分别为:2-甲基异莰醇1.52%～8.23%,土嗅素1.37%～7.53%。结论:方法前处理操作简单,定性准确,检出限好,准确度与精密度高,能够满足水中致嗅物质的检测要求。
Objective: To explore the determination of the main olfactory substances (2-methylisorbitol and doxorubicin) in drinking water and drinking water. Methods: The olfactory substances in the sample were adsorbed by solid phase microextraction (FTIR), and were separated by gas chromatography-mass spectrometry. Results: The minimum detectable concentration of the method was 0.15 ng / L 2-methyl iso-iso-propyl alcohol and 0.10 ng / L of soil erlotin respectively. The recoveries of spiked samples were 96.0% -99.6% , Respectively. The relative standard deviations were 1.52% ~ 8.23% for 2-methyl iso-iso-daphnanol and 1.37% ~ 7.53% for soils. Conclusion: The pretreatment of the method is simple, accurate and accurate, the detection limits are good, the accuracy and precision are high, and it can meet the detection requirements of the olfactory substances in water.