溶剂解吸-气相色谱法同时测定工作场所空气中5种氯代烯烃  

Simultaneous detection of five kinds of olefine chlorides in workplace air by solvent desorption-gas chromatography

作　　者：李思燕 钟苑琴[1] 叶立和 LI Siyan;ZHONG Yuanqin;YE Lihe(Dongguan Prevention and Treatment Center for Occupational Disease, Dongguan, Guangdong 523008, Chin)

机构地区：[1]东莞市职业病防治中心,广东东莞523008

出　　处：《中国职业医学》2018年第2期223-226,共4页China Occupational Medicine

摘　　要：目的建立同时测定工作场所空气中5种氯代烯烃的溶剂解吸-气相色谱方法。方法活性炭管采集空气中的5种氯代烯烃,经二硫化碳解吸,HP-INNOWAX毛细管柱分离,采用火焰离子化检测器测定。结果氯乙烯、氯丙烯、氯丁二烯、反-二氯乙烯、顺-二氯乙烯5种氯代烯烃线性范围较宽,线性相关系数均大于0.999 8,方法的检出限和最低检出浓度分别为0.30~0.80 mg/L和0.05~0.13 mg/m^3(以采集空气样品6.0 L计算),加标回收率为95.90%~102.67%,批内、批间相对标准偏差分别为0.00%~3.74%和0.21%~6.12%,样品在室温下至少可保存14 d。结论该方法操作简单、线性好、灵敏度高、重现性好,适用于工作场所空气中5种氯代烯烃的测定。Objective To establish a method for simultaneous detection of five kinds of olefine chlorides in workplace air by solvent desorption-gas chromatography. Methods The olefine chlorides in workplace air were collected using activated charcoal tubes,desorbed by carbon disulfide,separated on a HP-INNOWAX capillary column and detected with flame ionization detector. Results The linear range of the five kinds of chlorinated olefins（ vinyl chloride,allyl chloride,chloroprene,trans-1, 2-dichloroethylene, cis-1, 2-dichloroethene） was wide and the linear correlation coefficient was greater than 0. 999 8. The detection limit and the minimum detectable concentrations were 0. 30-0. 80 mg/L and 0. 05-0. 13 mg/m3,respectively（ air sample volume 6. 0 L）. The recovery rate was 95. 90%-102. 67%. The within-run and betweenrun relative standard deviations were 0. 00%-3. 74% and 0. 21%-6. 12%,respectively. The samples could be preserved at room temperature for at least 14 days. Conclusion This method has simple operation,good linear range,high sensitivity and good reproducibility,which is suitable for detecting 5 kinds of olefine chlorides in workplace air.

关 键 词：氯代烯烃 工作场所 空气 溶剂解吸 气相色谱法 

分 类 号：R134.4[医药卫生—劳动卫生]