23 KB123 KB23 KB199820252006Afkhami, AbbasSarlak, NahidZarei, Ali Rezaštevilka:3letnik:536 stranistr. 357-362ISSN:1318-0207COBISSID:28081669URN:URN:NBN:SI:doc-9VWEJASRenSlovensko kemijsko društvoActa chimica slovenicaanalizna kemijaparacetamolsalicilamidspektralna analizaspektrofotometrične metodespektrofotometrijaSpectrophotometric determination of salicylamide and paracetamol in biological samples and pharmaceutical formulations by a differential kinetic method|A rapid, simple and sensitive spectrophotometric method is presented for the determinations of salicylamide and paracetamol in mixture. The method is based on their complexation and oxidation reactions by Fe3+ ion. Two sets of conditions were established such that in one set of conditions only salicylamide reacts with Fe3+ ion, but in the other set of conditions both of the salicylamide and paracetamol are oxidized by Fe3+ ion in the presence of 1,10-phenantroline. In both sets the reactions can be monitored spectrophotometrically by measuring the absorbance of the produced copmplexes at 510 nm. The data were evaluated by proportional equations. The method allowed the determination of salicylamide and paracetamol at concentrations between 2.0 - 300 ig mL-1 and 0.50 - 10 ig mL-1 with relative standard deviations of 2.58% and 3.47%, respectively. The method was applied to the determination of salicylamide and paracetamol in human serum and pharmaceutical formulationsPredstavljena je hitra, enostavna in občutljiva spektrofotometrična metoda za določevanje salicilamida in paracetamola v zmesi. Metoda temelji na njuni oksidaciji z ionom Fe3+ in tvorbi kompleksov železa s salicilaminom in 1,10-fenantrolinom. Izbrani so bili taki reakcijski pogoji, da v prvem primeru reagira z Fe3+ samo salicilamin, v drugem pa Fe3+ oksidira obe spojini v prisotnosti 1,10-fenantrolina. V obeh primerih merimo koncentracijo nastalih kompleksov spektrofotometrično pri 510 nm. Metoda omogoča določevanje salicilamida in paracetamola v koncentracijskih območjih 2,0 do 300 g mL-1 in0,50 do 10 g mL-1, z relativnimi standardnimi odmiki meritev 2,58% oziroma 3,47%. Metoda je bila uporabljena za določevanje salicilamida in paracetamola v krvni plazmi in farmacevtskih pripravkihTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaSlovensko kemijsko društvo