Microwave plasma torch - atmospheric-sampling glow discharge modulated tandem source for the sequential acquisition of molecular fragmentation and atomic mass spectra

被引：9

作者：

Ray, SJ ^{[1
]}

Hieftje, GM ^{[1
]}

机构：

[1] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA

来源：

ANALYTICA CHIMICA ACTA | 2001年 / 445卷 / 01期

关键词：

microwave plasma torch; atmospheric-sampling glow discharge; tandem source; modulated source; mass spectrometry;

D O I：

10.1016/S0003-2670(01)01253-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A modulated tandem source consisting of a microwave plasma torch and an atmospheric-sampling glow discharge is investigated as a means of generating atomic and molecular mass spectra in a rapid, sequential mariner. Conceptually, the pair operates by using the microwave plasma torch to produce atomic ions, and the atmospheric-sampling glow discharge for production of molecular fragmentation mass spectra. The mass spectra of several volatile organic compounds representative of both atomic and molecular modes of operation are presented, and the latter directly compared to mass spectra produced by an electron-impact ionization source. Unique aspects of the experimental construction and performance of this pair are considered. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：35 / 45

页数：11

共 22 条

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ASANO K G, 1990, Spectroscopy (Amsterdam), V8, P191

[2]

BORER MW, 1991, SPECTROCHIM ACTA REV, V14, P386

[3] Elemental speciation special issue [J].