Distinguishing Environmentally-Relevant Isomers using Selected Ion Chemical Ionization in a Quadrupole Ion Trap Mass Spectrometer

机译：在四极离子阱质谱仪中使用所选离子化学电离区分环境相关的异构体

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Volatile organic compounds (VOCs) are an important class of atmospheric pollutants. VOCs have been detected and identified using many different mass spectrometric (MS) techniques, namely proton-transfer reaction MS (PTR-MS), selected-ion flow tube MS (SIFT-MS), and selected-ion chemical ionization MS (SICI-MS). In each of these techniques, selected reagent ions ionize the analyte by chemical ionization. Proton transfer ionization occurs when the proton affinity of the analyte is greater than that of the reagent. Charge transfer ionization occurs when the recombination energy of the reagent ion is greater than the ionization energy of the analyte. Other ionization pathways such as hydride abstraction or hydroxide abstraction are also possible, depending on the analyte and the ionizing reagent. The work presented here uses SICI-MS to distinguish isomeric VOCs by varying the reagent ions used for chemical ionization.

机译：挥发性有机化合物（VOC）是一类重要的大气污染物。使用许多不同的质谱（MS）技术，即质子转印反应MS（PTR-MS），所选离子流动管MS（SIFT-MS）和所选离子化学电离MS（SICI-多发性硬化症）。在这些技术中的每一种中，所选试剂离子通过化学电离电离分析物。当分析物的质子亲和力大于试剂的质子的亲和力时，会发生质子转移电离。当试剂离子的重组能大于分析物的电离能时，发生电荷转移电离。取决于分析物和电离试剂，也可以进行其他电离途径，例如氢化物抽取或氢氧化物抽象。这里呈现的作品使用SICI-MS来通过改变用于化学电离的试剂离子来区分异构VOC。

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《ASMS Conference on Mass Spectrometry and Allied Topics》|2006年||共2页
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Karen S. Wendling; Gary L. Glish;
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4. Distinguishing Environmentally-Relevant Isomers using Selected Ion Chemical Ionization in a Quadrupole Ion Trap Mass Spectrometer [C] . Karen S. Wendling, Gary L. Glish ASMS Conference on Mass Spectrometry and Allied Topics . 2006

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Distinguishing Environmentally-Relevant Isomers using Selected Ion Chemical Ionization in a Quadrupole Ion Trap Mass Spectrometer

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