Determination of Ephedrine and Codeine in Urine Using High Performance Liquid Chromatography with Liquid-Liquid-Liquid Phase Microextraction
Received:December 02, 2006  Revised:January 04, 2007
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DOI：10.3969/j.issn.1004-4957.年份.月份
KeyWord:liquid- liquid- liquid microextraction  high performance liquid chromatography  ephedrine  codeine  urine
LIU Qing-yan  ZHANG Zhao-hui  CHEN Bo  MA Ming
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