Characterization of prostaglandins by combined gas-liquid chromatography and chemical ionization mass spectrometry

1974 ◽  
Vol 93 (1) ◽  
pp. 47-62 ◽  
Author(s):  
E.O. Oswald ◽  
D. Parks ◽  
T. Eling ◽  
B.J. Corbett
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Chemical Ionization ◽  
Ionization Mass Spectrometry ◽  
Chemical Ionization Mass Spectrometry ◽  
Gas Liquid Chromatography ◽  
Ionization Mass

Separation and Analysis of the Pyrethrins by Combined Gas-Liquid Chromatography-Chemical Ionization Mass Spectrometry

1977 ◽  
Vol 60 (3) ◽  
pp. 685-689 ◽  
Author(s):  
Roy L Holmstead ◽  
David M Soderlund
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Chemical Ionization ◽  
Ionization Mass Spectrometry ◽  
Chemical Ionization Mass Spectrometry ◽  
Gas Liquid Chromatography ◽  
Ionization Mass ◽  
Total Extract ◽  
Naturally Occurring ◽  
Selective Ion Monitoring

Abstract Pyrethrins, the 6 naturally occurring insecticidal esters of pyrethrum extract, were analyzed by combined gas-liquid chromatography-chemical ionization mass spectrometry. Separation was best on an OV-25 column with temperature programming. The chemical ionization mass spectra for the 6 esters as well as for the thermally isomerized pyrethrins I and II are reported and discussed. Using selective ion monitoring, a lower limit of detectability of all 6 esters was 114 ng of total extract injected on the column.

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