研究了用于乙醇胺(MEA)挥发物检测的离子迁移率谱方法,该方法具有检测速度快,检测限低的特点。不同MEA体积分数的检测实验结果表明:该方法对低体积分数MEA的检测具有很好的线性响应特性;选择较高的漂移管工作温度可以缩短检测的周期;在密闭环境允许体积分数标准下的干扰物质对检测结果的影响很小。
Ion mobility spectrometry (IMS) is used for the detection of monoethanolamine (MEA) vapor,and it has the advantages of high speed, low detection limit. The MEA vapor at different volume fraction is measured, the results show that the linear response characteristic is achieved for low volume fraction MEA;the detection period is shortened at a higher operating temperature of drift tube. In addition, the effects of the interference compounds present in a closed atmosphere at permissible volume fraction limit on the detections are slight.