结果表明：胆甾醇酯的EI质谱裂解途径主要由甾环决定，各化合物谱图之间几乎无差别；
The result shows that EI fragmentation process of cholesterol esters is determined mostly by the steroid nucleus, and there is almost no difference among the mass spectra of various compounds.
从月腺大戟根甲醇提取液的沉淀部分，鉴定了4种化合物，分别为二十九烷醇10、24亚甲基环阿尔廷醇、豆甾醇和达考甾醇。
Four compounds, namely 10 nonacosane, 24 methylenecycloartanol, stigmasterol and dacosterol have been isolated from the precipitate of the plant's methanol extract.
具有高含量的C27甾烷、规则甾烷、4-甲基甾烷、长链三环萜烷，说明它们母质主要为菌藻类；
High amounts of C27 steranes, regular steranes, 4-methyl steranes, long chain tricyclic terpanes for the western Qaidam oils indicate that the dominant organic matter source is algal material.
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