TY - JOUR
T1 - Enhanced resolution of organic compounds from sediments by isotopic gas chromatography-combustion-mass spectrometry
AU - Lichtfouse, Eric
AU - Freeman, Katherine H.
AU - Collister, James W.
AU - Merritt, Dawn A.
N1 - Funding Information:
This work was supported by DOE Grant DE-FG0248ERl3978 to Professor J. M. Hayes, to whom we are grateful for helpful discussions. We also thank the French Petroleum Institute and the Colorado Geological Survey for the supply of sediments.
PY - 1991/10/25
Y1 - 1991/10/25
N2 - The resolution of organic compounds from sediments is increased by 13C/12C isotopic gas chromatography-combustion-mass spectrometry relative to gas chromatography with flame ionization detection. Impurities which elute close together with n-alkanes, phytane and a C32 hopanoid acid methyl ester are resolved with a valley increase of up to 100%. This phenomenon is probably due to fractionation during gas chromatographic elution and enhanced detection monitoring of the isotopic composition of the carbon dioxide produced by the combustion of the eluting substances.
AB - The resolution of organic compounds from sediments is increased by 13C/12C isotopic gas chromatography-combustion-mass spectrometry relative to gas chromatography with flame ionization detection. Impurities which elute close together with n-alkanes, phytane and a C32 hopanoid acid methyl ester are resolved with a valley increase of up to 100%. This phenomenon is probably due to fractionation during gas chromatographic elution and enhanced detection monitoring of the isotopic composition of the carbon dioxide produced by the combustion of the eluting substances.
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U2 - 10.1016/0021-9673(91)85074-P
DO - 10.1016/0021-9673(91)85074-P
M3 - Article
AN - SCOPUS:0026047414
SN - 0021-9673
VL - 585
SP - 177
EP - 180
JO - Journal of Chromatography A
JF - Journal of Chromatography A
IS - 1
ER -