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Discriminatory analysis of marine - engine lubricants using hopane biomarkers / Masato Taki in Industrial & engineering chemistry research, Vol. 49 N° 23 (Décembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 23 (Décembre 2010) . - pp. 12263–12268 Titre : Discriminatory analysis of marine - engine lubricants using hopane biomarkers Type de document : texte imprimé Auteurs : Masato Taki, Auteur ; Masatoshi Nagai, Auteur Année de publication : 2011 Article en page(s) : pp. 12263–12268 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Engine  lubricants  Hopane  biomarkers Résumé : Twenty marine-engine lubricants from five Japanese oil companies were discriminated on the basis on a hopane analysis using a gas chromatograph−mass spectrometer (GC−MS). The hopane ratios of 18α-22,29,30-trisnorneohopane (1) to 17α-22,29,30-trisnorhopane (2) and of 17α-21β(H)-norhopane (3) to 17α-21β(H)-hopane (5) were determined. Each lubricant can be discriminated by combining the figures represented by the 1 to 2 and 3 to 5 ratios and principal component analysis from 1 through (22R)-17α-21β(H)-29-pentakishomohopane (15). Oleanane (4), one of the biomarkers inherent in the crude oils from Southeast Asia, has been detected in the lubricants of eight out of 20 types, and 4 represents a significant feature for the discrimination. The discrimination of the lubricants in the spilled oils was also investigated. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100904b [article] Discriminatory analysis of marine - engine lubricants using hopane biomarkers [texte imprimé] / Masato Taki, Auteur ; Masatoshi Nagai, Auteur . - 2011 . - pp. 12263–12268. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 23 (Décembre 2010) . - pp. 12263–12268 Mots-clés : Engine  lubricants  Hopane  biomarkers Résumé : Twenty marine-engine lubricants from five Japanese oil companies were discriminated on the basis on a hopane analysis using a gas chromatograph−mass spectrometer (GC−MS). The hopane ratios of 18α-22,29,30-trisnorneohopane (1) to 17α-22,29,30-trisnorhopane (2) and of 17α-21β(H)-norhopane (3) to 17α-21β(H)-hopane (5) were determined. Each lubricant can be discriminated by combining the figures represented by the 1 to 2 and 3 to 5 ratios and principal component analysis from 1 through (22R)-17α-21β(H)-29-pentakishomohopane (15). Oleanane (4), one of the biomarkers inherent in the crude oils from Southeast Asia, has been detected in the lubricants of eight out of 20 types, and 4 represents a significant feature for the discrimination. The discrimination of the lubricants in the spilled oils was also investigated. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100904b