苏玛罐采样/气相色谱-质谱法测定工作场所空气中恶臭气体

Determination of Malodorous Gases in the Workplace by Canisters Sampling/Gas Chromatography-Mass Spectrometry

建立甲硫醇、二甲二硫醚、甲硫醚三种恶臭气体在工作场所空气中的检测方法:利用苏玛罐采样,冷阱预浓缩处理样品,气相色谱质谱联用法测定其浓度,检测限可达到0.05μg/m^3,加标回收率也可以控制在在86%-102.4%范围,样品测试的相对标准偏差<1.0%,反映出此方法准确度高、重复性好,同时操作便捷。

The establishment of methanethiol, dimethyl disulfide, methyl sulfide three kinds of foul gases in the workplace air detection methods： the use of Suma tank sampling, cold trap preconcentration samples, gas chromatography-mass spectrometry determination of its concentration, detection The limit can reach 0.05 mg/m3, the spike recovery rate can also be controlled in the range of 86 %-102.4 %, the relative standard deviation of the sample test is less than 1.0 %, reflecting the high accuracy and repeatability of the method and the convenient operation.