工作场所空气中邻甲酚毛细管柱气相色谱测定法  

Capillary column gas chromatography method for determination of 2-Methylphenol in the air of workplace

作　　者：李四生[1] 朱海燕[2] 张克才[1] 宋晓琼[1] 戴震[1] 葛成相[1] 

机构地区：[1]合肥市疾病预防控制中心,安徽合肥230061 [2]华东交通大学,江西南昌330013

出　　处：《中国卫生检验杂志》2013年第6期1383-1384,1388,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的:建立溶剂解吸-毛细管柱气相色谱法测定工作场所空气中邻甲酚。方法:对工作场所空气中邻甲酚用硅胶采样管采样,丙酮解吸,DB-FFAP毛细管柱分离,火焰离子化检测器检测,标准曲线法定量。结果:邻甲酚浓度在0.0μg/ml～200μg/ml范围内呈线性关系,回归方程为y=21.48C-7.796,相关系数r=0.9999;方法检出限为0.3μg/ml,最低检出浓度0.04 mg/m3(以采集7.5L空气计)。解吸效率为87%～102%,相对标准偏差(RSD)为2.3%～5.4%。高、中、低浓度的标准重复测定的相对标准偏差(RSD)均小于1%,样品在硅胶采样管中于冰箱下至少可保存7 d。结论:建立的方法灵敏度很高、快速准确,操作简单,可以应用于工作场所空气中邻甲酚的测定。Objective： To establish a method for determination of 2 -methylphenol in workplace air by capillary column gas chromatography. Methods：2 - Methylphenol was collected with activated silica gel tube, desorbed by acetone, then separated by DB - FFAP column, detected by FID, and quantified by the standard curve. Results： The regression equation was y = 21.48C - 7. 796 （ r = 0. 9999 ） in the concentration range of 0.0 ug/ml - 200 ug/ml. The detection limit was 0.3 ug/ml, the minimum detectable concentration was 0.04 mg/m3 （ the air sample was 7.5 L）. The desorption efficient was 87% - 102%. The relative standard deviation was 2.3% - 5.4%. The relative standard deviation of High, medium and low standard concentration was below 1% by repetition measurement. The sample could be stored in the silica gel tube at least for seven days. Conclusion：The method was rapid and accurate, high sensitive and easy to operate, So it was suitable for determination of 2 - Methylphenol in the air of workplace

关 键 词：邻甲酚 工作场所空气 气相色谱 

分 类 号：O657.71[理学—分析化学]