Abstract:Recebido em 17/10/05; aceito em 14/3/06; publicado na web em 25/7/06 TURBIDIMETRIC DETERMINATION OF HOMATROPINE METHYLBROMIDE IN PHARMACEUTICAL FORMULATIONS USING A FLOW INJECTION ANALYSIS SYSTEM. A flow injection turbidimetric procedure exploiting merging zones is proposed for determining homatropine methylbromide (HMB) in pharmaceutical preparations. The determination is based on the precipitation reaction of homatropine methylbromide with AgNO 3 solution to form a precipitate, which was measured at 410 nm. … Show more
“…O emprego de medidas turbidimétricas em sistemas de análise por injeção em fluxo tem sido amplamente explorado no nosso grupo de trabalho, [22][23][24][25][26][27] especialmente para a quantificação de diversos fármacos. [24][25][26][27] Suarez et al 24 e Canaes e Fatibello-Filho 25 empregaram sistema de análise em fluxo (FIA) com detecção turbidimétrica para a determinação de acetilcisteína e metilbrometo de homatropina, respectivamente. Ambos os procedimentos baseiam-se na precipitação do analito de interesse com nitrato de prata.…”
Recebido em 29/1/09; aceito em 22/5/09; publicado na web em 10/11/09 FLOW-INJECTION TURBIDIMETRIC DETERMINATION OF FLUOXETINE HYDROCHLORIDE IN PHARMACEUTICAL FORMULATIONS. A simple, accurate and precise flow-injection turbidimetric procedure for the determination of fluoxetine hydrochloride in pharmaceutical formulations is reported. The procedure is based on the precipitation of chloride of fluoxetine hydrochloride with silver nitrate solution and the yielded insoluble AgCl (s) was monitored at 420 nm. The analytical curve was linear in the fluoxetine hydrochloride concentration range 3.0 x 10 -5 -5.0 x 10 -4 mol L -1 with a detection limit of 10 µmol L -1 and, a sample throughout of 60 h -1 .
“…O emprego de medidas turbidimétricas em sistemas de análise por injeção em fluxo tem sido amplamente explorado no nosso grupo de trabalho, [22][23][24][25][26][27] especialmente para a quantificação de diversos fármacos. [24][25][26][27] Suarez et al 24 e Canaes e Fatibello-Filho 25 empregaram sistema de análise em fluxo (FIA) com detecção turbidimétrica para a determinação de acetilcisteína e metilbrometo de homatropina, respectivamente. Ambos os procedimentos baseiam-se na precipitação do analito de interesse com nitrato de prata.…”
Recebido em 29/1/09; aceito em 22/5/09; publicado na web em 10/11/09 FLOW-INJECTION TURBIDIMETRIC DETERMINATION OF FLUOXETINE HYDROCHLORIDE IN PHARMACEUTICAL FORMULATIONS. A simple, accurate and precise flow-injection turbidimetric procedure for the determination of fluoxetine hydrochloride in pharmaceutical formulations is reported. The procedure is based on the precipitation of chloride of fluoxetine hydrochloride with silver nitrate solution and the yielded insoluble AgCl (s) was monitored at 420 nm. The analytical curve was linear in the fluoxetine hydrochloride concentration range 3.0 x 10 -5 -5.0 x 10 -4 mol L -1 with a detection limit of 10 µmol L -1 and, a sample throughout of 60 h -1 .
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