气相色谱-质谱法测定水中28种挥发性有机物  

Determination of 28 volatile organic compounds in water by gas chromatography-mass spectrometry

作　　者：王媛[1] 胡斌[1] 陆巧荣[1] 张宏斌[1] 

机构地区：[1]昆山市疾病预防控制中心理化检验科,江苏昆山215300

出　　处：《现代预防医学》2017年第13期2430-2434,共5页Modern Preventive Medicine

摘　　要：目的建立同时检测水中28种挥发性有机物的吹扫捕集-气相色谱-质谱方法,并研究水样保存时间对测定结果的影响。方法经吹扫捕集对水中28种挥发性有机物进行富集,气相色谱分离后,采用选择离子模式质谱检测。结果 28种挥发性有机物,在1.00μg/L^100μg/L范围内线性关系良好,方法检出限范围0.0429μg/L^0.333μg/L,加标回收率范围95.2%~114%,方法精密度范围1.38%~6.39%。结论本方法操作简便、快速、选择性好,准确度高,可用于水中28种挥发性有机物的同时测定。Objective To establish a method for determination of 28 volatile organic compounds （VOCs） by purge and trap coupled with GC - MS and to study the effect of water storage time on the determination results. Methods The VOCs were enriched with purge - trapping, and then were separated and detected by gas chromatography - mass spectrometry. Results The method had a good linearity in the range of 1.00 - 100 μg/L. The detection limits of the method were 0. 0429 μg/L - 0. 333 μg/L,and the recovery rates were 95.2% - 114% ,with the RSDs of 1.38% - 6.39%. Conclusion The proposed method was selective, sensitive, convenient and efficient, and it is suitable for the detection of 28 VOCs in water.

关 键 词：水 挥发性有机物 吹扫捕集 气相色谱-质谱法(GC-MS) 

分 类 号：R115[医药卫生—公共卫生与预防医学]