工作场所空气中4种醇类的气相色谱同时测定研究  

Simultaneous determination of 4 kinds of alcohols in air of workplace by GC

作　　者：邵鹏[1] 李行方[1] 魏永春[2] 

机构地区：[1]深圳市宝安区疾病预防控制中心,广东深圳518101 [2]北京理工大学珠海学院,广东珠海519085

出　　处：《中国卫生检验杂志》2014年第17期2451-2452,2455,共3页Chinese Journal of Health Laboratory Technology

基　　金：深圳市宝安区科技创新局立项课题(2012066)

摘　　要：目的建立利用气相色谱同时测定工作场所中叔丁醇、正丙醇、异丁醇和正丁醇的方法。方法用活性炭管采样,二硫化碳解吸,DB-WAX(30 m×0.25 mm,0.25μm)毛细管柱分离,氢火焰离子化检测器检测,标准曲线法定量。结果 4种醇在5.0μg/ml^5 300μg/ml范围内呈良好的线性关系,相关性系数均在0.9999以上,检出限为1.5μg/ml^1.6μg/ml。以1.5 L采样量计算对应于空气中的最低检出浓度为1.0 mg/m3~1.1 mg/m3,定量检出浓度为3.4 mg/m3~3.5 mg/m3,解吸效率为77.8%~89.4%,相对标准偏差(RSD)均<3.0%。高、中、低浓度的重复测定的相对标准偏差(RSD)均<1.0%。结论建立的方法准确、灵敏、可靠,可应用于工作场所空气中4种醇的同时测定。Objective To establish a method for simultaneous determination of tertiary butanol, n - propyl alcohol, isobutyl al- cohol and n - butyl alcohol in air of workplace by gas chromatography. Methods Air sample of workplace was collected by ac- tive charcoal tube, desorbed with CS2, separated using DB - WAX capillary column, detected by GC with FID, and quantified by standard curve method. Results The 4 kinds of alcohols showed good linearity in the range of 5.0 μg/ml - 5 300μg/ml （ r 〉 0.9999）. The detection limits of the method were between 1.5μg/ml- 1.6μg/ml. The minimum detection concentration was 1.0 mg/m3- 1.1 mg/m3 and the quantitative detection limit was 3.4 mg/m3 - 3.5 mg/m3 for 1.5 L air sample of work- place, and the desorption efficiency was between 77.8% - 89.4%. The RSDs of repeated determination at high, medium and low concentrations were all less than 1.0%. Conclusion The method was accurate, sensitive, reliable, it was suitable for simultaneous determination of 4 kinds of alcohols in air of workplace.

关 键 词：工作场所空气 气相色谱法 叔丁醇 正丙醇 异丁醇 正丁醇 

分 类 号：O657.71[理学—分析化学]