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Determination of the Double Bond Position in Monounsaturated Acetates from Their Mass Spectra

Lanne, Boel S. ; Appelgren, Monica ; Bergström, Gunnar and Löfstedt, Christer LU (1985) In Analytical Chemistry 57(8). p.1621-1625
Abstract

A simple method of widespread applicability in determining double bond positions in C12, C14, and C16 straight-chain monounsaturated acetates is presented. The analysis is made with a capillary gas chromatograph coupled to a low-resolution mass spectrometer which is operated in the electron impact mode. No chemical derlvatlzation of the unknowns is needed. Five pairs of selected mass spectral fragments are chosen to distinguish positional isomers. A new mathematical model is introduced which permits simultaneous comparisons of all five ratios of unknowns and references. The method can be used for analyses of very small amounts (<5 ng) of unknown acetates in insect samples.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Analytical Chemistry
volume
57
issue
8
pages
1621 - 1625
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:0009142233
ISSN
0003-2700
DOI
10.1021/ac00285a027
project
Evolutionary mechanisms of pheromone divergence in Lepidoptera
language
English
LU publication?
yes
id
c873fcbc-9223-491e-90ee-e520684f89dd
date added to LUP
2020-07-23 15:44:49
date last changed
2020-09-23 15:07:21
@article{c873fcbc-9223-491e-90ee-e520684f89dd,
  abstract     = {<p>A simple method of widespread applicability in determining double bond positions in C12, C14, and C16 straight-chain monounsaturated acetates is presented. The analysis is made with a capillary gas chromatograph coupled to a low-resolution mass spectrometer which is operated in the electron impact mode. No chemical derlvatlzation of the unknowns is needed. Five pairs of selected mass spectral fragments are chosen to distinguish positional isomers. A new mathematical model is introduced which permits simultaneous comparisons of all five ratios of unknowns and references. The method can be used for analyses of very small amounts (&lt;5 ng) of unknown acetates in insect samples.</p>},
  author       = {Lanne, Boel S. and Appelgren, Monica and Bergström, Gunnar and Löfstedt, Christer},
  issn         = {0003-2700},
  language     = {eng},
  month        = {07},
  number       = {8},
  pages        = {1621--1625},
  publisher    = {The American Chemical Society (ACS)},
  series       = {Analytical Chemistry},
  title        = {Determination of the Double Bond Position in Monounsaturated Acetates from Their Mass Spectra},
  url          = {http://dx.doi.org/10.1021/ac00285a027},
  doi          = {10.1021/ac00285a027},
  volume       = {57},
  year         = {1985},
}