分析化学2011，Vol.39Issue(10)：1487-1490,4.DOI:10.3724/SP.J.1096.2011.01487
用于离子迁移率谱仪的快速热解析进样方法
A Rapid Sample Introduction Method of Thermal Desorption for Ion Mobility Spectrometer
摘要
Abstract
The thermal desorption is an important method for the introduction of liquid and solid samples into an ion mobility spectrometer (IMS). There are the problems of recondensation or decomposition for detecting low-volatile or thermally unstable organic compounds. A rapid thermal desorption device coupled with IMS membrane was developed. A micro-heater and a thermocouple were used to control the temperature of desorption for improving the efficiency of sample introduction. The experiments were carried out for the detection of low-concentration melamine solution. The effect of heating parameters on IMS product ion peak was investigated. The results show that the sample can be concentrated and sample loss and pollution can be reduced by using a temperature controlled heater with a heating rate of 76 ℃/s up to the 230 ℃ which ensures the linear response and low limit of detection (lower than 0. 05 ng).关键词
离子迁移率谱仪/热解析/脉冲加热/三聚氰胺Key words
Ion mobility spectrometer/ Thermal desorption/ Pulse heating/ Melamine detection引用本文复制引用
贾建,高晓光,何秀丽,李建平..用于离子迁移率谱仪的快速热解析进样方法[J].分析化学,2011,39(10):1487-1490,4.基金项目
本文系国家自然科学基金(No.60901048)资助 （No.60901048）
