Spectrophotometric Determination of Silver Ion in Pharmaceutical Materials Using an Organic Reagent
نویسندگان
1 Al-Qadisiyah General Directorate of Education, Ministry of Education, Al-Qadisiyah, Iraq
2 Department of Chemistry, College of Education, University of Al-Qadisiyah, Al-Qadisiyah, Iraq
doi
10.48309/ajca.2024.465524.1579چکیده
A sensitive spectrophotometric method was studied for the determination of silver ion in the presence of several interfering metal ions with high concentrations. This method relies on the formation of a complex between silver and 2-[2-(5-nitrothiazolyl)azo]-4,6-dibromophenol (NTADBrP). The new method was applied to determine the silver content in the metal alloys used in dental amalgam. The detection limit for the silver ion was 0.139 μg/mL, and the range of concentrations following Beer's law was from 1.0 to 50.0 ppm. The average percentage of silver present in the dental fillings was 38.9% with a standard deviation of ±0.01% and a recovery rate of 97%. UV-Vis spectrophotometry was used to compare it with the actual percentage of silver in the dental filling material, as indicated by the manufacturer, with no statistically significant differences.
