Journal
TALANTA
Volume 58, Issue 6, Pages 1095-1101Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0039-9140(02)00406-X
Keywords
sequential injection analysis; paracetamol; sodium hydroxide; pharmaceutical formulations
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A simple method for the rapid determination of paracetamol in pharmaceutical formulations is described. The method involves oxidation of paracetamol by potassium hexacyanoferrate(III) and a subsequent reaction with phenol in the presence of ammonia. The blue complex formed is measured at 630 nm. The system has a sample frequency of 27 samples per h with a detection limit of 0.2 mg l(-1) The calibration curve is linear up to 60 mg l(-1) with a relative standard deviation of 1.2% (n = 10). (C) 2002 Elsevier Science B.V. All rights reserved.
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