๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Electron Ionization and Positive-ion Chemical Ionization Mass Spectra of N-(2-Hydroxyethyl)alkylamides

โœ Scribed by Zaharie Moldovan; Cristina Maldonado; Josep M. Bayona

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
155 KB
Volume
11
Category
Article
ISSN
0951-4198

No coin nor oath required. For personal study only.

โœฆ Synopsis

A family of 12 (7 saturated and 5 unsaturated) long chain fatty acid N-(2-hydroxyethyl)amides has been investigated by electron ionization (EI) and positive-ion chemical ionization (PICI) mass spectrometry. This paper presents the mass spectra and structures of the main ions obtained by EI and PICI (using methane as reactant gas). The discussion of the fragmentation pattern is made in correlation with the methyl branch position in aliphatic compounds and the double bond position in monounsaturated compounds. A quantitative correlation of the ratio [M -H 2 O + H] + /[M -H 2 O -H] + , in the PICI mass spectra, with the number of double bonds, C atoms, and aliphatic H atoms is made.

๐Ÿ“œ SIMILAR VOLUMES

Methane positive-ion chemical ionization
Methane positive-ion chemical ionization mass spectra of phenols
โœ Yoshio Iida; Shigeki Daishima; Akihiro Shibata ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 338 KB

Positive-ion chemical ionization mass spectra for 48 phenols were measured using methane as the reagent gas in order to clarify their characteristics. The ion species obtained were almost identical with those generated in alkylbenzenes except for dehydrated ions produced from MH+ and adduct ions, in

Positive electron impact and chemical io
Positive electron impact and chemical ionization mass spectra of some nitramine nitrates
โœ J. A. Rowley ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 284 KB

The positive electron impact (EI) and isobutane chemical ionization (CI) mass spectra of six nitramine nitrates were studied with the aid of some accurate mass measurements. In the EI spectra, fl fission relative to both the nitramine and nitrate ester is important. In the C1 spectra a major ion occ

Alumatrane revisited: Distribution of ol
Alumatrane revisited: Distribution of oligomeric ions in electron impact ionization, chemical ionization and liquid secondary ion mass spectra
โœ Michael G. Bartlett; Scot A. Burns; David A. Bruce; Kenneth L. Busch ๐Ÿ“‚ Article ๐Ÿ“… 1995 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 519 KB

Oligomeric ions formed from aluminium 2,2',2"-Ntriltriethoxide (alumatrane) are present in electron impact (EI) ionization, chemical ionization (CI), direct-exposure probe chemical ionization (DCI) and liquid secondary ion (LSI) mass spectra. These oligomeric ions are most pronounced in the LSI mass