Binary mixtures of ethylene glycols HO(CH,CH,O)=H (x = 3-5) with glycerol were investigated by fast atom bombardment mass spectrometry. The relative intensities in the ethylene glycol partial mass spectra as a function of concentration exhibit a steep slope in the low concentration range. With incre
Reduction processes in fast atom bombardment mass spectrometry: Methylene blue in glycerol-thioglycerol and glycerol-nitrobenzyl alcohol matrices
✍ Scribed by Clement W. Kazakoff; Robin T. B. Rye
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 295 KB
- Volume
- 26
- Category
- Article
- ISSN
- 1076-5174
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✦ Synopsis
Abstract
Reduction of the methylene blue cation during fast atom bombardment was studied in glycerol–thioglycerol and glycerol–nitrobenzyl alcohol matrices. The relative abundances of reduced species are significantly lower in a matrix containing 0.2 m thioglycerol in glycerol than they are in pure thioglycerol. Pure 3‐nitrobenzyl alcohol or a glycerol–nitrobenzyl alcohol mixture is a less effective matrix material. These results are discussed in terms of a postulated mechanism for the formation of the reduced dye cation species.
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The reduction of selected redox indicator dyes during fast atom bombardment mass spectrometry was investigated in several different matrices. Reduction is indicated by the incorporation of one or more hydrogens into the cation of the dye. The extent of reduction of the analyte can be related to the