工作场所空气中挥发性有机物测定的便携式气相色谱-质谱法  

Rapid determination of volatile organic compounds in workplace air by protable gas chromatography-mass spectrometer

作　　者：朱海豹[1] 苏成君 唐红芳[1] 阮征[1] 刘丹华[1] 王晗[1] 钱亚玲[1] 

机构地区：[1]浙江省医学科学院卫生学研究所,杭州310013

出　　处：《中华劳动卫生职业病杂志》2017年第10期777-780,共4页Chinese Journal of Industrial Hygiene and Occupational Diseases

基　　金：浙江省科技厅科研专项（2015F1003）;浙江省科技厅项目（2015C37021）;浙江省科技厅科技条件建设项目（2013F10051）

摘　　要：目的建立便携式气相色谱-质谱（GC．MS）联用法快速测定工作场所空气中的47种挥发性有机物（VOCs）。方法采用静态配气法，以高纯氮气为稀释气配制成不同浓度水平的混合标准气，采用便携式GC-MS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47种化合物分离良好且准确定性，该法的线性范围为0．2～16．0mg／m3；45种VOCs的相对标准偏差为3．8％～15．8％，平均回收率为79．3％～119．O％。结论该方法操作简便，分离效果好，分析周期短，能用于同时定性、定量分析工作场所空气中的47种VOCs，同时也为职业危害现场毒物的快速识别与检测提供支持。Objective To establish a method for rapid determination of 47 volatile organic compounds in the air of workplace using portable gas chromatography-mass spectrometer （GC-MS）. Methods The mixed standard gas with different concentration levels was made by using the static gas distribution method with the high purity nitrogen as dilution 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 The 47 poisonous substances were separated and determined well. The linear range of this method was 0.2-16.0 mg/m3, and the relative standard deviation of 45 volatile ovganic compounds was 3.8%-15.8%. The average recovery was 79.3%- 119.0%. Conclusion The method is simple, accurate, sensitive, has good separation effect, short analysis period, can be used for qualitative and quantitative analysis of volatile organic compounds in the workplace, and also supports the rapid identification and detection of occupational hazards.

关 键 词：工作场所空气 挥发性有机物 色谱法 气相 光谱分析 质量 

分 类 号：R134.4[医药卫生—劳动卫生]