目的建立顶空-气相色谱技术测定工作场所空气中甲醇的检测方法。方法采用GH-1型溶剂解吸型硅胶管采样,顶空法进样,装有氢火焰离子化检测器FID的气相色谱检测,测定该方法的线性范围、平均值、标准偏差、相对标准偏差和回收率。结果该方法的甲醇质量浓度在140.0 mg/L以内呈线性,线性回归方程y=0.073589x-0.13717,该方法检出限为0.08 mg/L,线性范围为0.08~140 mg/L。其加标回收率为94.5%~105.2%,相对标准偏差为1.45%~5.89%。结论该方法灵敏、操作简便、可实现测定过程的简便化、且准确度高,可以满足工作场所空气中甲醇检测方法的要求。 Objective To establish a method for the determination of methanol in the air in the workplace by headspace-gas chromatography (GC). Methods GH-1 solvent desorption type silicone tube sampling, headspace sampling, equipped with hydrogen flame ionization detector FID gas chromatography detection, the linear range of the method, the average, standard deviation, relative standard deviation and Recovery rate. Results The methanol concentration of this method was linear within 140.0 mg / L. The linear regression equation was y = 0.073589x-0.13717. The detection limit was 0.08 mg / L and the linear range was 0.08-140 mg / L. The spiked recoveries ranged from 94.5% to 105.2% with relative standard deviations of 1.45% -5.89%. Conclusion The method is sensitive and easy to operate, which can simplify the determination process and has high accuracy and can meet the requirements of methanol detection method in the air of the workplace.