盐制饮片辅料含量测定方法对比研究  

Comparative Study on Assay Methods of Accessories for Chinese Herb Pieces' Salt Processing

作　　者：李文兵[1] 胡昌江[1] 黄勤挽[1] 余凌英[1] 

机构地区：[1]成都中医药大学药学院,四川成都611137

出　　处：《成都中医药大学学报》2012年第4期61-63,共3页Journal of Chengdu University of Traditional Chinese Medicine

基　　金：国家自然科学基金面上项目(批准号:30973941)

摘　　要：目的:对2种氯离子含量测定方法进行比较,为盐制饮片辅料含量测定方法的选择提供理论依据。方法:以盐益智仁饮片为样品,采用氯离子电极法和电位滴定法分别测定其氯离子含量,以标准曲线拟合常数r、精密度、重复性、加样回收率RSD为指标。结果:氯离子电极法拟合常数r=0.9994,精密度RSD=0.34%,重复性RSD=3.29%,平均加样回收率为98.03%,RSD=2.55%;电位滴定法拟合常数r=0.9996,精密度RSD=1.94%,重复性RSD=1.52%,平均加样回收率为97.44%,RSD=0.97%。结论:两种方法均能准确测定盐益智仁中氯离子含量,且方法学良好,以氯离子电极法操作更为简单,方便。Objective：To provide theoretical basis for choosing assay method of accessories for Chinese herb pieces＇ salt processing by comparing two different assay methods for Cl-1.Methods：The salted Fructus Alpiniae Oxyphyllae were chosen as the samples;Chloride ion electrode method and potentiometric titration were used to measure the content of Cl-1;the standard curve fitting constants r,precision,reproducibility,and recovery rate（RSD） were the evaluation index.Results：The results of Chloride ion electrode method and potentiometric titration were：curve fitting constants r were 0.9994 and 0.9996 respectively;precision RSD were 0.34 % and 1.94 % respectively;reproducibility RSD were 3.29 % and 1.52 % respectively;average recovery rate were 98.03 %（RSD=2.55 %） and 97.44 %（RSD=0.97 %） respectively.Conclusion：Both of the assay methods could measure the content of Cl-1 in salted Fructus Alpiniae Oxyphyllae accurately with good methodology,and Chloride ion electrode method was more convenient with more simple manipulation.

关 键 词：氯离子电极法 电位滴定法 盐益智仁 辅料 

分 类 号：R283.2[医药卫生—中药学] R283.3[医药卫生—中医学]