| 溶剂浮选-紫外分光光度法测定厚朴中总厚朴酚 |
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| 引用本文： | 刘西茜,董慧茹. 溶剂浮选-紫外分光光度法测定厚朴中总厚朴酚[J]. 分析试验室, 2008, 27(10) |
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| 作者姓名： | 刘西茜 董慧茹 |
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| 作者单位： | 北京化工大学理学院,北京100029;青海师范大学化学系,西宁810008;北京化工大学理学院,北京,100029 |
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| 摘 要： | 建立了一种测定厚朴中总厚朴酚的新方法,即采用溶剂浮选法分离富集厚朴中的总厚朴酚,用紫外分光光度法测定其含量。考察了浮选溶剂、试液pH、氮气流速、浮选时间及电解质NaCl等因素对浮选效果的影响,优选出最佳浮选条件。采用所述方法对不同产地厚朴样品中总厚朴酚含量进行测定,样品加标回收率为94.9%-100.8%,RSD为2.8-4.1%。
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| 关 键 词： | 溶剂浮选 紫外分光光度法 厚朴 总厚朴酚 |
Determination of total magnolol content in magnolia officinalis rehd.by UV spectrophotometry with solvent sublation |
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| LIU Xi-qian,DONG Hui-ru. Determination of total magnolol content in magnolia officinalis rehd.by UV spectrophotometry with solvent sublation[J]. Chinese Journal of Analysis Laboratory, 2008, 27(10) |
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| Authors: | LIU Xi-qian DONG Hui-ru |
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| Abstract: | A novel method for separating and enriching total magnolol from magnolia officinalis rehd.by solvent sublation and determining the total magnolol by UV spectrophotometry has been developed.The effects of sublation solvent,gas flow rate,pH of solution,sublation time and electrolyte NaCl etc.on the sublation effect of total magnolol were investigated in detail,and the optimal conditions of the solvent sublation were obtained.The proposed method was used to determine the contents of total magnolol in magnolia ... |
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| Keywords: | Solvent sublation Spectrophotometry Magnolia officinalis rehd. Total magnolol |
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