吹扫捕集与气相色谱/质谱联用测定饮用水中挥发性有机化合物的方法
[A method for determination of volatile organic compounds in drinking water by purge and trap in combination with gas chromatograph/mass spectrometry].
作者信息
Xu Ying-Hua, Zhu Bing-Hui, Yang Ye, Li Shao-Xia
机构信息
Center for Disease Control and Prevention of Guangdong Province, Guangzhou 510300, China.
出版信息
Wei Sheng Yan Jiu. 2006 Sep;35(5):644-6.
OBJECTIVE
To establish a method of purge and trap in combination with gas chromatograph/mass spectrometry(P and T-GC/MS) for the rapid determination of minimum multi-mixture of volatile organic compounds (VOCs) in drinking water simultaneously.
METHODS
The experimental conditions of P and T, such as desorption temperature, desorption time, the type of the trap and the analytical conditions of GC were optimized. 54 VOCs in drinking water were determined by P and T-GC/MS.
RESULTS
The method enjoyed a wide linear range and good precision, the method detection limit(MDL) was 0.01 - 0.5 microg/L, the average recoveries of the method was 90% - 110% and the relative standard deviation (RSD) was 1.24%-7.79%.
CONCLUSION
The results showed that the method was accurate and high sensitivity and might be good for application and suitable for trace analysis of VOCs in drinking water.
目的
建立吹扫捕集与气相色谱/质谱联用（P和T-GC/MS）同时快速测定饮用水中多种挥发性有机化合物（VOCs）最低混合物的方法。
方法
优化吹扫捕集的实验条件，如解吸温度、解吸时间、捕集阱类型以及气相色谱的分析条件。采用P和T-GC/MS测定饮用水中的54种VOCs。
结果
该方法线性范围宽、精密度好，方法检出限（MDL）为0.01 - 0.5μg/L，方法平均回收率为90% - 110%，相对标准偏差（RSD）为1.24% - 7.79%。
结论
结果表明该方法准确、灵敏度高，具有良好的应用前景，适用于饮用水中VOCs的痕量分析。
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