【摘要】 目的:建立溶剂解吸-气相色谱法测定工作场所中甲基异戊醇的检测技术。方法:对工作场所空气中甲基异戊醇用活性炭管采集,用5%异丙醇CS2溶液解吸,经FFAP毛细柱分离,FID检测器检测。结果:本方法测定工作场所空气中甲基异戊醇线性范围为0 g/ml~200 g/ml,检出限为2.5 g(进样1μl液体),最低检出浓度为0.2029 mg/m3(采集1.5 l)。甲基异戊醇在0 g/ml~200 g/ml浓度范围内,其相对标准偏差范围为4.7%~6.4%。结论:本方法快速、准确、灵敏度高、操作简单,仪器配置要求低,适用于工作场所空气中甲基异戊醇浓度的日常监测。更多还原

【Abstract】 Objective:To establish a method for determination of methyl isoamyl alcohol in the workplace air by solvent desorption-gas chromatography.Methods:Methyl isoamyl alcohol was collected from workplace air using activated carbon tube,desorbed with 5% isopropyl alcohol and CS2 solution,separated on FFAP capillary column,and finally detected by FID detector.Results:The linear range of methyl isoamyl alcohol in workplace air was 0 μg/ml~200 μg/ ml,the detection limit was 2.5 μg/ ml(1 μl liquid for injection),the minimum detection concentration was 0.2029 mg/ m3(with acquisition of 1.5 l),and the relative standard deviation was 4.7%~6.4%.Conclusion:This method is rapid,accurate,high sensitive,easy to operate,with low-level instrument,thus it is applicable to the daily monitoring of methyl isoamyl alcohol in workplace air.更多还原