| 超临界萃取技术在泥炭纤维素提纯中的应用与萃取组分特征 |
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| 引用本文： | 许涛,王永莉,张铭杰,张平中.超临界萃取技术在泥炭纤维素提纯中的应用与萃取组分特征[J].沉积学报,2009,27(1):147-152. |
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| 作者姓名： | 许涛 王永莉 张铭杰 张平中 |
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| 作者单位： | 兰州大学资源环境学院 兰州 730000 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目，国家自然科学基金，中国科学院"西部之光"人才培养计划项目 |
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| 摘 要： | 将超临界CO2萃取技术应用于泥炭纤维素中有机脂类物质的提纯工作，并对萃取物进行色—质联用分析。结果表明，在萃取物中检出了一系列甲酯类、乙酯类、少量有机酸及正构烷烃组分。首次检出的脂肪酸乙酯系列化合物多数呈高碳数分布，具偶碳优势。长链正构烷烃主峰碳为nC33或nC31，具有明显的奇碳优势，这在一定程度上反映了泥炭生成过程的气候条件，记录了气候变化的信息。同时也显示出超临界CO2萃取技术能够很好地完成除去纤维素中有机脂类这一重要环节，有利于提高泥炭纤维素δ13C值检测的准确度，为超临界流体萃取技术在地学中的应用开辟了一个新途径。
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| 关 键 词： | 超临界流体萃取〖KG1〗泥炭纤维素〖KG1〗脂肪酸酯〖KG1〗脂肪酸〖KG1〗正构烷烃 |
| 收稿时间： | 1900-01-01 |
Application of Supercritical Fluid Extraction Method for the Purification of Peat Cellulose and Compositional Features of the Extracts |
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| XU Tao,WANG Yong-li,ZHANG Ming-jie,ZHANG Ping-zhong.Application of Supercritical Fluid Extraction Method for the Purification of Peat Cellulose and Compositional Features of the Extracts[J].Acta Sedimentologica Sinica,2009,27(1):147-152. |
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| Authors: | XU Tao WANG Yong-li ZHANG Ming-jie ZHANG Ping-zhong |
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| Institution: | College of Earth and Environment Science, Lanzhou University,Lanzhou 730000 |
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| Abstract: | Supercritical fluid extraction method(SFEm) has been used for the purification of peat cellulose and the extracts were analyzed and determined by gas chromatography-mass spectrometry. Series of methyl esters, ethyl esters and n-alkanes as well as small amount of fatty acids were detected. Cmax of long-chain n-alkanes , being typical of odd-to-even carbon number predominance,are at C29,C31,C33.Most of the series of ethyl esters which have not been reported by far have characteristic of a distribution at high... |
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| Keywords: | supercritical fluid extraction peat cellulose fatty acids ester fatty acids n-alkanes |
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