【摘要】 将沉积物抽提物和原油中复杂的非烃组成分离为酸性、中性Ⅰ和中性Ⅱ 3个馏分。各馏分经GC/MS分析证实羧酸和极性较大的多元醇和酮进入酸性馏分 ,一元酮、酯和直链一元醇进入中性馏分Ⅰ ,而甾醇类化合物进入中性馏分Ⅱ。各类化合物分段清晰 ,没有同一化合物在不同馏分中出现的现象 ,且分离过程中各化合物的比例基本保持不变。本文选用地质体中迄今未见析出的二十二烯酸 ,5α(H) 雄甾 17 酮和 5α(H) 雄甾 3β 醇分别作为各馏分的内标化合物 ,定量效果良好 ,并首次为甾醇类化合物找到了较理想的内标物。本方法经近百个样品的分离分析证实效果良好。更多还原

【Abstract】 An analytical method for seperating nonhydrocarbons in sediments and crudes into an acidic fraction, a neutral fraction *!, and a more polar neutral neutral fraction *" 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.更多还原