Determination of parts-per-trillion levels of chlorate, bromate, and iodate by electrospray ionization/high-field asymmetric waveform ion mobility spectrometry/mass spectrometry

被引：44
|
作者：
Barnett, DA
Guevremont, R [1 ]
Purves, RW
机构：
[1] Natl Res Council Canada, Inst Natl Measurement Stand, Ottawa, ON K1A 0R6, Canada
[2] PE SCIEX, Concord, ON L4K 4V8, Canada
来源：
APPLIED SPECTROSCOPY | 1999年 / 53卷 / 11期
关键词：
electrospray ionization; ESI; high-field asymmetric waveform ion mobility spectrometry; FAIMS; mass spectrometry; MS; bromate; chlorate; iodate; ESI-FAIMS-MS;
D O I：
10.1366/0003702991945984
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
An electrospray ionization (ESI) source was used to transfer oxo-anions (XO3-) of nitrogen, chlorine, bromine, and iodine to the gas phase for analysis by a combination of high-field asymmetric waveform ion mobility spectrometry (FAIMS) and mass spectrometry. The combination of ESI with FAIMS and mass spectrometry (ESI-FAIMS-MS) yields mass spectra that are virtually free of common spectral interferences. The unique separation and focusing properties of the FAIMS analyzer improved signal-to-background ratios (S/B) for all these analytes by 3-4 orders of magnitude compared with conventional ESI-MS and produced parts-per-trillion (pptr) detection limits for ClO3-, BrO3-, and IO3- in methanolic solution.
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页码：1367 / 1374
页数：8
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