高压模块性能对数字离子阱质谱仪性能的影响

发布时间：2018-02-03 17:32

本文关键词： 数字线性离子阱数字束缚电压质谱性能改进　出处：《质谱学报》2015年02期 　论文类型：期刊论文

【摘要】：数字线性离子阱质谱仪的供电高压模块的稳定度、负载变化率等参数对数字离子阱的性能有很大影响。为了研究供电高压模块对仪器性能的影响,本工作基于正在研制的便携式数字线性离子阱质谱仪,以1mg/L苯、甲苯、二甲苯、氯苯混合标准气体为检测对象,研究高压模块性能改进后仪器性能的变化情况。结果表明:通过增加稳压模块的方法,使离子阱质谱仪一级质谱的质量稳定性、离子响应,二级质谱的隔离效率都有较大幅度的提高;一级质谱中,离子的质量轴波动减小到之前的一半,响应值提高了10%以上,二级质谱离子的隔离效率提高了1.6倍。
[Abstract]:The stability of the power supply high voltage module and the load change rate of the digital linear ion trap mass spectrometer have great influence on the performance of the digital ion trap. In order to study the influence of the power supply high voltage module on the performance of the instrument. This work is based on a portable digital linear ion trap mass spectrometer. The mixture of 1mg / L benzene, toluene, xylene and chlorobenzene is used as the detection object. The change of the instrument performance after the improvement of the performance of the high voltage module is studied. The results show that the mass stability and ion response of the first order mass spectrometer of the ion trap mass spectrometer can be achieved by adding the steady voltage module. The isolation efficiency of secondary mass spectrometry was improved greatly. In the first order mass spectrometry, the mass axis fluctuation of ions is reduced to half of that before, the response value is increased by more than 10%, and the isolation efficiency of secondary mass spectrometry ions is increased by 1.6-fold.
【作者单位】：上海大学环境与化学工程学院;昆山禾信质谱技术有限公司;暨南大学环境安全与污染控制研究所;
【基金】：国家重大仪器设备开发专项(YQ170067)资助
【分类号】：TH843
【正文快照】： doi:10.7538/zpxb.youxian.2014.0060随着现场检测对分析仪器需求的增多,分析仪器的便携式和小型化已成为当今的发展趋势[1]。在众多的质谱仪中,线性离子阱质量分析器具有灵敏度高、体积小和加工精度要求低等优势,是制造小型化仪器的首选[2-4]。数字线性离子阱质谱仪因其新颖

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