自然科学版
陕西师范大学学报(自然科学版)
专题研究
RP-HPLC同时测定保和丸中5种有机酸
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陈战国,金燕子
(陕西师范大学 化学与材料科学学院, 陕西 西安 710062)
陈战国,男,副教授,主要从事药物分析和药物中间体的合成研究.
摘要:
采用反相高效液相色谱法,在Lichrospher C18分析柱中,以(NH4)2HPO4-H3PO4水溶液(pH值为 2.8)为流动相,建立了保和丸(浓缩丸)中草酸、酒石酸、苹果酸、柠檬酸、琥珀酸的含量测定方法.结果表明,在选定实验条件下,上述5种酸的线性范围分别为26×10-7~13×10-5 g,30×10-7~15×10-5 g,48×10-7~24×10-5 g,69×10-7~35×10-5 g,77×10-7~39×10-5 g;检出限分别为64×10-9 g,75×10-9 g,12×10-8 g,18×10-8 g和20×10-8 g.该方法用于保和丸中草酸、酒石酸、苹果酸、柠檬酸、琥珀酸的定量测定,取得比较满意的结果.
关键词:
保和丸; 有机酸; 反相高效液相色谱法
收稿日期:
2006-05-23
中图分类号:
O6577
文献标识码:
A
文章编号:
1672-4291(2006)04-0057-04
基金项目:
Doi:
Simultaneous determination of five organic acids in Baohewan by RP-HPLC
CHEN Zhan-guo, JIN Yan-zi
(College of Chemistry and Materials Science, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)
Abstract:
This article reports a method for the simultaneous separation and determination of oxalic acid (OA), tartaric acid(TA), malic acid (MA), citric acid(CA) and succinic acid(SA) in Baohewan by reversed-phase high-performance liquid chromatography (RP-HPLC). Analytical column was Lichrospher -C18, mobile phase was (NH4)2HPO4-H3PO4 aqueous solution(pH 2.8) and detected wavelength was 210 nm. The results show that the linear ranges for five constituents are 2.6×10-7~1.3×10-5g,3.0×10-7~1.5×10-5g,4.8×10-7~2.4×10-5g,6.9×10-7~3.5×10-5g,7.7×10-7~3.9×10-5g, respectively. The limitary detection for five constituents are 6.4×10-9g,7.5×10-9g,1.2×10-8g,1.8×10-8g,2.0×10-8g, respectively. The proposed method has been applied to the determination of OA,TA,MA,CA and SA in Baohewan with satisfactory results.
KeyWords:
Baohewan; organic acids; RP-HPLC