Spectrophotometric Determination of Amoxicillin Trihydrate by Coupling with Diazotized 2,4-dinitroaniline | ||
| Journal of Education and Science | ||
| Article 13, Volume 30, Issue 4, September 2021, Pages 177-192 PDF (572.58 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.33899/edusj.2021.130393.1165 | ||
| Authors | ||
| Hisham Amin Taher Al-Herki1; subhi Mohsin jarullah* 2 | ||
| 1Department of Chemistry, College of Education for Pure Sciences, University of Mosul, Mosul, Iraq | ||
| 2Chemistry-Mosul uni.iraq-mosul | ||
| Abstract | ||
| Abstact: A simple , accurate and sensitive spectrophotometric method has been developed for the determination of amoxicillin trihydrate (AMOX) as pure and in pharmaceutical preparations (capsule) . This method based on the coupling reaction of drug with diazotized 2,4- dinitroaniline reagent in an alkaline medium at 20 ºC to produce an intense red, water-soluble dye that is stable and has a maximum absorption at 555 nm . Beer's law was obeyed over the concentration range 3-16 µg/ml with molar absorptivity of 1.1 x104 l.mol-1.cm-1. The limit of detection(LOD) is 0.1448 µg/ml while the limit of quantitation(LOQ) is 0.4825 µg/ml. The method shows high accuracy (average recovery 100.43%) and precision(relative standard division (RSD) is less than 1.4%).The stoichiometry of the resulting azo dye has been also worked out and it is found to be 1:1 AMOX:Diazotized 2,4-Dinitroaniline.Standard addition method refers to the suggested method is free from interferences from common excipients. The developed method was successfully applied for the determination of studied drug in capsules comparable with the certified content value. . | ||
| Keywords | ||
| Spectrophotometry,,; ,،,؛amoxicillin trihydrate,,; ,،,؛dinitroaniline,,; ,،,؛diazotization | ||
|
Statistics Article View: 364 PDF Download: 561 |
||