An Analytical Method for Oxygenated Nonhydrocarbonsin Sediments and Crudes / 分析化学
Chinese Journal of Analytical Chemistry
;
(12): 276-279, 2001.
Article
in Chinese
| WPRIM
| ID: wpr-410771
ABSTRACT
An analytical method for seperating nonhydrocarbons in sediments and crudes into an acidic fraction, a neutral fraction (Ⅰ), and a more polar neutral neutral fraction (Ⅱ) is reported. With this method, components only appear in individual fractions. Fatty acids and polyols and polyones are seperated into the acidic fraction; mono-ketones, esters and straight-chain alkanols fall into the neutral fraction Ⅰ; Streols are found in the neutral fraction Ⅱ. No evident alteration of ratios of the components through the separation procedures is observed. Erucic acid, 5α(H)-androstan-17-one, and 5α(H)-androstan-3β-ol are selected first time as internal standards for sterols in acidic fraction, neutral fraction Ⅰ and Ⅱ, respectively. They are good standards for quantitation of the components with gas chromatography, especially 5α(H)-androstan-3β-ol with in the first time an interal standard for quantitation of sterols. The analytical method has been proved to be effective by seperation of more than hundred sedimental samples
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Chinese Journal of Analytical Chemistry
Year:
2001
Type:
Article
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