✦ LIBER ✦

Reduction processes in fast atom bombardment mass spectrometry: Interdependence of analyte and matrix redox potentials

✍ Scribed by James N. Kyranos; Paul Vouros

Publisher: John Wiley and Sons
Year: 1990
Tongue: English
Weight: 595 KB
Volume: 19
Category: Article
ISSN: 1076-5174
DOI: 10.1002/bms.1200191009

No coin nor oath required. For personal study only.

✦ Synopsis

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 El,* value of the reduction potential of the dye. Selection of matrix also influences the reduction, the reducing power decreasing in the order glycerol > sulfolane > thioglycerol > hydroxyethyl disulfide > nitrobenzyl alcohol. Evidence is given suggesting that reduction is initiated by exposure of the analytematrix mixture to atom bombardment. It is shown that reduction can be controlled by the addition of metal ions with a very low reduction potential to the matrix to act as electron scavengers.

📜 SIMILAR VOLUMES

Reduction processes in the fast atom bom

Reduction processes in the fast atom bombardment mass spectrometry of sulfonyl esters of diazonaphthalenones

✍ James N. Kyranos; Bertrand M. Du Sorbier; John Wronka; Paul Vouros; Daniel P. Ki 📂 Article 📅 1988 🏛 John Wiley and Sons 🌐 English ⚖ 770 KB

Liquid matrix induced processes in fast

Liquid matrix induced processes in fast atom bombardment mass spectrometry of polyazacrown transition metal complexes

✍ M.Victoria Martínez-Díaz; Tomás Torres; Wolfram Schäfer 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 659 KB

Reduction processes in fast atom bombard

Reduction processes in fast atom bombardment mass spectrometry: Methylene blue in glycerol-thioglycerol and glycerol-nitrobenzyl alcohol matrices

✍ Clement W. Kazakoff; Robin T. B. Rye 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 295 KB

## 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 p

Application of dicyandiamide as a matrix

Application of dicyandiamide as a matrix additive in fast atom bombardment mass spectrometry

✍ G. W. Caldwell; A. B. Reitz; J. A. Masucci 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 414 KB

Dicyandiamide (DCDA) is used as a chemical additive in the fast atom bombardment (FAB) matrix 3mercaptopropane-l,2diol (thioglycerol) and propane-1,2,3-triol (glycerol). It is demonstrated that DCDA can be used to generate adduct ions [M + H + DCDA]' for a variety of common organic functional groups

Inhibition of the reduction process occu

Inhibition of the reduction process occurring in liquid secondary ion mass spectrometry (LSIMS)/fast atom bombardment (FAB)

✍ A. Agnello; E. de Pauw 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 178 KB

Reduction by Electron and Hydride Attach

Reduction by Electron and Hydride Attachment to Doubly Charged Heterocyclic Cations in Fast-atom Bombardment Mass Spectrometry. Influence of the Matrix

✍ Pilar Cabildo; Rosa Claramunt; Dionisia Sanz; José Elguero; Christine Enjalbal; 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 308 KB 👁 2 views

A study of the fast-atom bombardment spectra of positive ions which result from doubly charged heterocyclic cationic compounds shows the influence of the matrix on the nature of the spectrum. While two reduction reactions are encountered with glycerol (electron and hydride anion attachment), the spe