Naik, P.P.Karthikeyan, J.Nityananda Shetty, A.N.2026-02-052010Environmental Monitoring and Assessment, 2010, 171, 46113, pp. 639-6491676369https://doi.org/10.1007/s10661-010-1308-8https://idr.nitk.ac.in/handle/123456789/273814-[N,N-(Diethyl)amino] benzaldehyde thiosemicarbazone (DEABT) is proposed as an analytical reagent for the spectrophotometric determination of platinum(IV). The DEABT forms 1:2 yellow complex with Pt(IV), which is sparingly soluble in water and completely soluble in water-ethanol-DMF medium. The Pt(IV)-DEABT complex shows maximum absorbance at 405 nm. Beer's law is valid up to 7.80 ?g cm-3, and optimum concentration range for the determination of platinum(IV) is 0.48-7.02 ?g cm-3. The molar absorptivity and Sandell's sensitivity of the method are found to be 1.755 × 104 dm3 mol-1 cm-1 and 0.0012 ?g cm-2, respectively. The relative error and coefficient of variation (n=6) for the method does not exceed ±0.43% and 0.35%, respectively. Since the method tolerates a number of metal ions commonly associated with platinum, it can be employed for the determination of platinum in environmental samples, pharmaceutical samples, alloys, catalysts, and complexes. The method is rapid as the Pt(IV)-DEABT complex is soluble in water-ethanol-DMF medium and not requiring any time consuming extraction method for the complex. © 2010 Springer Science+Business Media B.V.Analytical reagentBeer's lawChromogenic reagentCoefficient of variationEnvironmental sampleMaximum absorbanceMolar absorptivityOptimum concentrationPt(IV) determinationRelative errorsSandell's sensitivitySpectrophotometric determinationThiosemicarbazonesTime-consuming extractionWater-ethanolAldehydesEthanolMetal ionsPlatinumPlatinum alloysSpectrophotometersSpectrophotometryPlatinum compounds4 [n,n (diethyl)amino]benzaldehyde thiosemicarbazoneacroleinalcoholalloybuffercarboplatincisplatinlake watermetal ionphthalimideplatinumreagentriver waterthiosemicarbazone derivativeunclassified drugwaterwell watercatalystconcentration (composition)ethanolextraction methodspectrophotometryabsorptionaccuracyaqueous solutionarticlechemical compositionchemical reactioncolorcomplex formationculture mediumpHsensitivity analysistemperaturewater samplingAlloysEnvironmental PollutantsHumansPharmaceutical PreparationsTemperatureWater