Chelatometric dispersive liquid-liquid microextraction followed by capillary electrophoresis for the analysis of total and water soluble copper in Rhizoma coptidis

被引：1
|
作者：
Fan-Yun Meng [1 ,2 ]
Ying-Qin Wei [3 ,4 ,2 ]
Heng Lu [3 ,2 ]
Xiao-Teng Zhou [3 ,2 ]
Jin-Xin Liu [3 ,2 ]
Geng Li [3 ,2 ]
Jing-Yi Hou [3 ,2 ]
机构：
[1] Beijing Key Laboratory of Protection and Utilization of Chinese Medicine.Beijing Normal University
[2] Institute of Natural Medicine and Chinese Medicine Resources,Beijing Normal University
[3] Beijing Key Laboratory of Protection and Utilization of Chinese Medicine,Beijing Normal University
[4] School of Chemical Engineering,Shandong Institute of Light Industry
来源：
ChineseChemicalLetters | 2013年 / 24卷 / 06期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Capillary electrophoresis; cDLLME; Speciation; Rhizoma coptidis;
D O I：
暂无
中图分类号：
O657.8 [毛细管分析、电毛细管分析];
学科分类号：
070302 ; 081704 ;
摘要：
A new method for the analysis of copper and its speciation in Rhizoma coptidis was proposed using chelatometric dispersive liquid-liquid microextraction(cDLLME) followed by capillary electrophoresis. Dithizone was used as a chelating agent for extraction and carbon tetrachloride and ethanol were used as extraction and dispersive solvent,respectively.The calibration curve was linear in the range of 0.5- 20.0μg/mL with a correlation coefficient of 0.9990(n = 6) and the average recovery was in the range of 88.26%-94.44%.The method was successfully used to determine the total and water soluble copper in Rhizoma coptidis herbal medicine.The results suggested that it would be reasonable to setting the criterion of heavy metals in an herbal medicine according to the dosage forms.
引用
收藏
页码：506 / 508
页数：3
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