作业场所空气中二丙二醇甲醚气相色谱测定方法的研究

Determination of dipropylene Glycol Methyl Ether in workplace air by gas chromatography

目的:建立工作场所空气中二丙二醇甲醚的直接进样—气相色谱测定方法。方法:空气中的二丙二醇甲醚用注射器采集,直接进样,以30 m×320μm×1.00μm DB-1701毛细管柱分离,氢火焰离子化检测器检测。结果:二丙二醇甲醚浓度在0.00μg/ml～650μg/ml范围内线性较好,回归方程Y=6.7930x+0.0173,相关系数r为0.99989,方法的检出限为2.14μg/ml。结论:该方法各项指标均达到GBZ/T210.4-2008职业卫生标准制定指南的要求。方法准确可靠﹑简单可行,适用于作业场所空气中二丙二醇甲醚的测定。

Objective：To establish a method for determination of dipropylene glycol methyl ether in the air of workplace by direct injection gas chromatography.Methods： The dipropylene glycol methyl ether in air was sampled by injector for direct injection.The analyte was separated in a 30 m×320 μm×1.00 μm DB-1701 capillary column with flame ionization detection.Results： The method showed good linearity in a range from 0.00 μg/ml to 650 μg/ml with a correlation coefficient of 0.99989 and the linear equation was Y=6.7930x＋0.0173.The limit of detection for dipropylene glycol methyl ether was 2.14 μg/ml.Conclusion： The method was in line with Guide for establishing occupational health standards（GBZ/T210.4-2008）,which could be widely used for determination of dipropylene glycol methyl ether in workplace.