太湖沉积物中酮的提取、分离及GC-MS测定  

The Extraction, Isolation and Determination of Ketone in the Sediment of Taihu Lake

作　　者：瞿文川[1] 苏晨伟[2,3] 张平中 

机构地区：[1]中国科学院南京地理与湖泊研究所 [2]南京大学制药厂 [3]中国科学院兰州地质研究所

出　　处：《分析测试技术与仪器》1999年第1期33-36,共4页Analysis and Testing Technology and Instruments

基　　金：中国科学院重大项目;中国科学院

摘　　要：用索氏抽提法提取了太湖沉积物中的可溶性有机质，用不同极性溶剂在硅胶／氧化铝柱上分离了饱和烃、芳烃、酮馏分。利用ＧＣ－ＭＳ对酮组份进行了分析。沉积物中检出了一系列呈等间距分布的正构烷基－２－酮：Ｃ１４至Ｃ３３，主峰为Ｃ２９，具有强烈的奇碳数优势。在Ｃ１６至Ｃ１７之间检出了丰度很高的Ｃ１８类异戊二烯酮。采用保留时间、质谱图和标准图谱相结合的方法对酮化合物加以鉴定。The extractable lipids were isolated using soxhlet extraction method in the surficial sediment of Taihu lake. The ketones were fractionated on an activated SiO\-2/Al\-2O\-3 column with hexane/ethylacetate (9:1,V/V) solvent. The ketone fraction was analyzed by GC-MS instrument. A series of alkan-2-ones were detected in the sediment samples of Taihu lake. The distribution range of carbon number was C\-14C\-33, major peak was C\-29 with high OEP(odd to even predominance index). 6,10,14-trimethyl pentadecan-2-one between the peaks of C\-16 and C\-17 with high abundance was also found. All the ketone compounds were identified by the analysis of their mass-spectrogram, retention time and the standard mass-spectrogram.

关 键 词：太湖 沉积物 测定 酮 色谱-质谱 湖泊 

分 类 号：P343.3[天文地球—水文科学]