首页> 外国专利> CHEMICAL IONIZATION REACTION OR PROTON TRANSFER REACTION MASS SPECTROMETRY WITH A QUADRUPOLE OR TIME-OF-FLIGHT MASS SPECTROMETER

CHEMICAL IONIZATION REACTION OR PROTON TRANSFER REACTION MASS SPECTROMETRY WITH A QUADRUPOLE OR TIME-OF-FLIGHT MASS SPECTROMETER

机译:四极或飞行时间质谱仪的化学电离反应或质子转移反应质谱

摘要

A system and methods are described for generating reagent ions and product ions for use in a mass spectrometry system. Applications for the system and method are also disclosed for detecting volatile organic compounds in trace concentrations. A microwave or high-frequency RF energy source ionizes particles of a reagent vapor to form reagent ions. The reagent ions enter a chamber, such as a drift chamber, to interact with a fluid sample. An electric field directs the reagent ions and facilitates an interaction with the fluid sample to form product ions. The reagent ions and product ions then exit the chamber under the influence of an electric field for detection by a mass spectrometer module. The system includes various control modules for setting values of system parameters and analysis modules for detection of mass and peak intensity values for ion species during spectrometry and faults within the system.
机译:描述了一种用于产生在质谱系统中使用的试剂离子和产物离子的系统和方法。还公开了用于检测痕量浓度的挥发性有机化合物的系统和方法的应用。微波或高频RF能量源将试剂蒸气的粒子电离以形成试剂离子。试剂离子进入诸如漂移室之类的腔室,以与流体样品相互作用。电场引导试剂离子,并促进与流体样品的相互作用以形成产物离子。然后,试剂离子和产物离子在电场的影响下离开腔室,以通过质谱仪模块进行检测。该系统包括用于设置系统参数值的各种控制模块和用于在光谱测定和系统内故障期间检测离子物种的质量和峰值强度值的分析模块。

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