便携式气相色谱-质谱法快速测定环境空气中的痕量挥发性有机物  

Rapid determination of trace volatile organic compounds in ambient air by portable gas chromatography-mass spectrometry

作　　者：朱海豹[1] 苏成君 唐红芳[1] 阮征[1] 王晗[1] 刘丹华[1] 钱亚玲[1] Zhu Haibao;Su Chengjun;Tang Hongfang;Ruan Zheng;Wang Han;Liu Danhua;Qian Yaling(Zhejiang Academy of Medical Sciences, Hangzhou 310013, China)

机构地区：[1]浙江省医学科学院,杭州310013

出　　处：《卫生研究》2017年第6期981-985,共5页Journal of Hygiene Research

基　　金：浙江省科技厅科研专项(No.2015F1003);浙江省科技厅项目(No.2015C37021);浙江省科技厅科技条件建设项目(No.2013F10051)

摘　　要：目的采用便携式气相色谱-质谱(GC-MS)仪直接测定环境空气中35种痕量挥发性有机物。方法抽取1.0、2.0、5.0、10.0、25.0和50.0 m L的混合标准气分别注入1.0 L纯净氮气中,采用便携式气相色谱-质谱仪手持探头直接采样检测,以保留时间和特征离子定性,内标法定量。结果在所建立的试验条件下,35种化合物分离良好且准确定性,方法相对标准偏差3.2%~15.1%,平均回收率为75.1%~121.4%(n=6)。结论便携式GC-MS法可用于环境空气中挥发性有机物的定性定量检测。Objective Direct determination of 35 trace volatile organic compounds in air by portable gas chromatography mass spectrometry （GC-MS）. Methods The mixed standard gas of different concentration levels was prepared with high purity nitrogen as diluent gas. The samples were injected into the GC-MS by a hand-held probe. Retention time and characteristic ion were used for qualitative analysis, and the internal standard method was usd for quantitation. Results Under the established experimental conditions, the 35 poisonous substances were separated and determined well. The relative standard deviation was 3.2%-15.1%. The average recovery was 75.1%-121.4% （n = 6）. Conclusion The portable GC-MS method can be used for qualitative and quantitative detection of volatile organic compounds in ambient air.

关 键 词：便携式气相色谱-质谱 环境空气 挥发性有机物 

分 类 号：R122.1[医药卫生—环境卫生学] O657.63[医药卫生—公共卫生与预防医学]