0000000000432524

AUTHOR

M. Venezia

showing 2 related works from this author

4-(2-piridilazo)resorcinolo come indicatore metallocromico schermato da verde naftolo b nella retrotitolazione di EDTA in eccesso per determinare Cr(…

2006

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EDTA excess Zn(II) back-titration in the presence of 4-(2-pyridylazo)-resorcinol indicator and naphthol green beta as inert dye for determining Cr(II…

2006

The colour changes of 4-(2-pyridylazo)-resorcinol and naphthol green beta as new screening metallochromic indicator in back-titration of EDTA excess with Zn(II) to determine Cr(III)/EDTA complex was investigated with the help of tristimulus colorimetry. Specific colour discrimination (SCD) and L*, a*, b* 1976 parameters were successfully applied to evaluate the quality of colour transition at the end-point in non-alkaline media and in the presence of Zn(II) and Ca(II) which resulted in non-interfering species at 1x10(-3) M and 2x10(-3) M, respectively. The above concentrations are comparable with those used for Cr(III). Validation of the fast and accurate reported method was performed by at…

ChromiumEnvironmental EngineeringHealth Toxicology and Mutagenesischemistry.chemical_elementIndustrial WasteZincResorcinolNaphtholsWaste Disposal FluidComplexometric titrationlaw.inventionWater PurificationChromiumchemistry.chemical_compoundlawEnvironmental ChemistryColorimetryColoring AgentsWaste Management and DisposalEdetic AcidModels StatisticalResorcinolsPollutionZincchemistryWastewaterModels ChemicalEnvironmental chemistryCalciumAtomic absorption spectroscopyWater Pollutants ChemicalNuclear chemistryWaste disposalJournal of hazardous materials
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