Ms. Garcia et al., FLOW-INJECTION SPECTROPHOTOMETRIC DETERMINATION OF DICLOFENAC SODIUM IN PHARMACEUTICALS AND URINE SAMPLES, Journal of pharmaceutical and biomedical analysis, 17(2), 1998, pp. 267-273
A sensitive and fast flow-injection spectrophotometric method for the
determination of diclofenac sodium based on the formation of coloured
compound with Ce(IV)-3-methyl-2-benzothiazolinone hydrazone hydrochlor
ide (MBTH) in H2SO4 3 x 10(-2) M medium is proposed. Using the peak he
ight as a quantitative parameter diclofenac was determined at 580 nm o
ver the range 0.20-8.0 mu g ml(-1). The proposed method was successful
ly applied to the determination of diclofenac in pharmaceuticals and u
rine samples. (C) 1998 Elsevier Science B.V. All rights reserved.