快速气相色谱/电子轰击离子源-飞行时间质谱联用仪的研制

大气与环境光学学报 ›› 2017, Vol. 12 ›› Issue (1): 58-65.

• “先进环境监测技术与设备”专辑 • 上一篇下一篇

快速气相色谱/电子轰击离子源-飞行时间质谱联用仪的研制

肖卫战1,3，麦泽彬1,3，吴曼曼3，黄正旭1,2，谭国斌3，高伟1,2*

( 1. 暨南大学质谱仪器与大气环境研究所，广东广州，510632;
2. 广东省大气污染在线源解析系统工程技术研究中心, 广东广州，510632;
3. 广州禾信仪器股份有限公司，广东广州，510530)

收稿日期:2016-08-03 修回日期:2016-11-09 出版日期:2017-01-28 发布日期:2017-01-13
通讯作者: 肖卫战（1986-），男，汉族，河南商丘夏邑县人，硕士，研发工程师，主要从事分析仪器研制、应用方面的工作。 E-mail:w.gao@hxmass.com
作者简介:肖卫战（1986-），男，汉族，河南商丘夏邑县人，硕士，研发工程师，主要从事分析仪器研制、应用方面的工作。
基金资助:
Supported by National High Technology Research and Development Program of China (国家863计划, 2014AA06A501), Pearl River New Star Project (珠江新星项目, 201610010149), Fundamental Research Funds for the Central Universities (中央高校基本科研业务费专项)

Development of Fast Gas Chromatography/Electron Impact Ion Source of Time-of-Flight Mass Spectrometry

XIAO Weizhan1,3, MAI Zebin1,3, WU Manman3, HUANG Zhengxu1,2, TAN Guobin3, GAO Wei1,2*

(1. Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou 510632, China;
2.Guangdong Provincial Engineering Research Center for On-Line Source Apportionment System of Air Pollution, Guangzhou 510632, China;
3. Guangzhou Hexin Instrument CO., LTD., Guangzhou 510530, China)

Received:2016-08-03 Revised:2016-11-09 Published:2017-01-28 Online:2017-01-13

摘要/Abstract

摘要：

基于快速气相色谱分析技术和飞行时间质谱技术，研制了快速气相色谱/电子轰击离子源-飞行时间质谱联用仪。仪器由进样系统、气相色谱分离系统、气质接口、电子轰击离子源、垂直引入反射式飞行时间质量分析器、数据采集系统和硬件控制系统等组成。设计了汽化室、加热膜色谱柱和一种三层套管的传输管用于连接色谱与质谱。以烃类混合标准气体为对象，对载气压力、色谱柱温度和电压参数进行了优化，实现了对各类有机物的快速分离和准确定性。最后，将该方法用于测试苯系物和异丁烷标气，进行了仪器性能测试。结果表明，质量范围是4~502 amu，分辨率优于500(FWHM)，检测限为500 ppb，分析时间小于5 min，重现性RSD小于10%，动态范围达到四个数量级。

关键词: 快速气相色谱, 汽化室, 加热膜色谱柱, 气质接口, 电子轰击离子源, 飞行时间质谱

Abstract:

Based on fast gas chromatograph and time of flight mass spectrum technology, fast gas chromatography/electron impact ion source of time-of-flight mass spectrometer (FGC/EI-TOF MS) is developed. The FGC/EI-TOF MS is mainly composed of a sample system, a GC separation system, a GC-MS interface, an electron impact ion source, a vertical introduction of reflection time-of-flight mass analyzer, a data acquisition system and hardware control system. A vaporization chamber, heating film of GC and three-wall-tube line are built. After the optimization of EPC, temperature of GC, and important voltage parameters, Alkanes standard gas mixtures are studied, and fast separation and accurate classification different kinds of organic compounds are eventually realized rapidly and accurately. At last, the FGC-TOF MS is applied to characterization of benzenes and isobutane standard gas mixtures. The results indicate that mass range is 4~502 amu, resolution is better than 500 (FWHM), detection limit is 500 ppb, analysis time is less than 5 min, reproducibility RSD is less than 10%, dynamic range is four orders of magnitude.

Key words: fast gas chromatography, vaporization chamber, heating film of GC, GC-MS interface, electron impact ion source, time-of-flight mass spectrum

中图分类号:

X832

肖卫战麦泽彬吴曼曼黄正旭谭国斌高伟. 快速气相色谱/电子轰击离子源-飞行时间质谱联用仪的研制[J]. 大气与环境光学学报, 2017, 12(1): 58-65.

XIAO Wei-Zhan, MAI Ze-Bin, WU Man-Man, HUANG Zheng-Xu, TAN Guo-Bin, GAO Wei. Development of Fast Gas Chromatography/Electron Impact Ion Source of Time-of-Flight Mass Spectrometry[J]. Journal of Atmospheric and Environmental Optics, 2017, 12(1): 58-65.

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快速气相色谱/电子轰击离子源-飞行时间质谱联用仪的研制

Development of Fast Gas Chromatography/Electron Impact Ion Source of Time-of-Flight Mass Spectrometry

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