SELECTIVE SPECTROPHOTOMETRIC DETERMINATION OF SOME CEPHALOSPORINS IN PHARMACEUTICAL FORMULATIONS

被引：20

作者：

ABDALLA, MA

机构：

[1] Dept. of Chemistry, College of Science, Riyadh-11451

来源：

ANALYTICAL LETTERS | 1991年 / 24卷 / 01期

关键词：

SPECTROPHOTOMETRIC; CEPHALOSPORINS DETERMINATION; ETHYLENE BLUE METHOD;

D O I：

10.1080/00032719108052883

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A spectrophotometric method for the determination of some cephalosporins is described. The method is based on the hydrolysis of the cephalosporins in sodium hydroxide solution to produce hydrogen sulphide and conversion of the sulphide formed to ethylene blue. The method is selective for cephalesporins, as penicillins do not form hydrogen sulphide under these conditions. Cephalosporins were determined in presence of high concentration of penicillins, the detection limit being 0.5 - 15 ug per g of penicillin. The method has been successfully applied to the analysis of some pharmaceutically formulations and the results have been statistically compared with those obtained by the official methods and the imidazole and mercury(II) method.

引用

页码：55 / 67

页数：13

共 14 条

[1] SELECTIVE SPECTROPHOTOMETRIC DETERMINATION OF CEPHALOSPORINS BY ALKALINE-DEGRADATION TO HYDROGEN-SULFIDE AND FORMATION OF METHYLENE-BLUE [J].