| Autor: |
B.J. Kimble, James R. Maxwell, Geoffrey Eglinton, R.P. Philp |
| Rok vydání: |
1974 |
| Předmět: |
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| Zdroj: |
Chemical Geology. 14:173-198 |
| ISSN: |
0009-2541 |
| Popis: |
One method for the analysis of complex organic mixtures from geological sources is the use of high-resolution gas chromatographic data together with mass spectra obtained by combined gas chromatography-mass spectrometry (gc-ms). The present study involved examination of a variety of authentic triterpenoid alkanes (triterpanes) and steroid alkanes (steranes) for reference purposes, by measurement of their Kovats indices on OV-101 and Dexsil 300 liquid phases, and by the recording of their low-resolution mass spectra by gc-ms. These measurements provide reference data for analysis of the triterpenoid alkanes in geological samples and show that mass spectrometry is a valuable technique for triterpane analysis, permitting in many cases gross structural assignments which may be refined by a comparison of Kovats indices with those of authentic standards. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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