Spectrophotometric Determination of L-Ascorbic Acid Based on Its Oxidation by Potassium Peroxodisulfate in the Presence of Cu(II) as Catalyst
- Autores: Salkić M.1
- 
							Afiliações: 
							- Department of Analytical Chemistry, Faculty of Technology
 
- Edição: Volume 71, Nº 2 (2016)
- Páginas: 153-157
- Seção: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/181481
- DOI: https://doi.org/10.1134/S1061934816020088
- ID: 181481
Citar
Resumo
A new, selective and accurate direct spectrophotometric procedure was developed for the determination of L-ascorbic acid (AA) in pharmaceuticals. Background correction was based on the oxidation of AA by potassium peroxodisulfate in the presence of Cu(II) as a catalyst. The molar absorptivity of the proposed procedure was 1.04 × 104 L/(mol cm) at 262 nm. Beer’s law was obeyed in the concentration range of 0.68–16.00 μg/mL for AA. The detection limit was 0.20 μg/mL, and the relative standard deviation was 0.91% (n = 7) for 8.00 μg/mL AA. Other compounds commonly found in pharmaceutical preparations did not interfere with the detection of AA. The proposed procedure was successfully applied to the determination of AA in pharmaceuticals, and the results obtained agreed with those obtained by iodine titration.
Palavras-chave
Sobre autores
Mirsad Salkić
Department of Analytical Chemistry, Faculty of Technology
							Autor responsável pela correspondência
							Email: mirsad.salkic@untz.ba
				                					                																			                												                	Bósnia e Herzegovina, 							Univerzitetska 8, Tuzla, 75 000						
Arquivos suplementares
 
				
			 
						 
						 
						 
						 
					 
				 
  
  
  
  
  Enviar artigo por via de e-mail
			Enviar artigo por via de e-mail  Acesso aberto
		                                Acesso aberto Acesso está concedido
						Acesso está concedido Somente assinantes
		                                		                                        Somente assinantes
		                                					