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Determination of chlorpromazine hydrochloride in tablets by molecular emission cavity analysis
Authors:Issam M.A. Shakir
Affiliation:Chemistry Department, College of Science, University of Salah Al-Deen, Arbil Iraq
Abstract:Sulphur in chlorpromazine hydrochloride (2–50 mg) is oxidized by dichromate in condensed phosphoric acid (CPA) to sulphate, which in turn is reduced to hydrogen sulphide by heating with tin dissolved in CPA. The gas is carried by nitrogen to a steel cavity situated in a hydrogen/nitrogen flame and the S2 emission is measured at 384 nm. The method is applied to determine the drug in powdered tablets. No sample pretreatment is needed; the procedure takes 10 min.
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