Producción Científica Profesorado

Sequential Injection Spectrophotometric Determination of Diclofenac in Urine and Pharmaceutical Formulations



Rodríguez Ávila, José Antonio

2008

Rodriguez, J.A., Islas, G., Paez-Hernandez, M.E., Barrado, E. Sequential injection spectrophotometric determination of diclofenac sodium in urine and pharmaceutical formulation, Journal Flow Injection Analysis, 2008, Vol. 25, Num. 1, p. 39-43, ISSN 0911-775X


Abstract


This paper reports a sequential injection spectrophotometric method for determining the concentration of diclofenac (DCF) in urine samples and pharmaceutical formulations. The method is based on the reaction of DCF with potassium permanganate in an alkaline medium. The influence on the analytical signal of the reactor length, the permanganate volume, the sample volume and the flow rate was investigated using a Taguchi parameter design. Under optimal conditions, the linear range of the calibration curve varied from 10.0 to 100.0 mg l-1, with a detection limit of 5.0 mg l-1. A sampling rate of 15 determinations h-1 was achieved; the relative standard deviation of analytical repeatability was less than 3.0% in all cases. The method was validated by comparing the results obtained against those provided by RP-HPLC; no significant differences were seen (p<0.05)



Producto de Investigación




Artículos relacionados

Potentiometric Behavior of Diverse Polypyrrole-sulphate Films Electro Synthesized on Graphite - Epox...

Development of a Polypyrrole Selective Membrane For The Potentiometric Quantification of Saccharinat...

Synthesis, characterization, and crystal structures of n-alkyldiorganodithiophosphates RS2P(OC6H4)2

Determination of non-steroidal anti-inflammatory drugs in wastewaters by magnetic matrix solid phase...

Potentiometric quantification of saccharin by using a selective membrane formed by pyrrole electropo...

Multicommutated Anodic Stripping Voltammetry at Tubular Bismuth Film Electrode for Lead Determinatio...

Design and Construction of Solid State Ag/AgCl Reference Electrodes Through Electrochemical Depositi...

Determination of oxytetracycline in milk samples by polymer inclusion membrane separation coupled to...

Development of a Chloride Ion-Selective Solid State Sensor Based on Doped Polypyrrole-Graphite-Epoxy...

Potentiometric Behavior of Diverse Polypyrrolesulphate Films Electro Synthesized on Graphite Epoxy ...