Title: Development of the Analytical Method of Iron through Optimization Reducing Agent Ability of Iron (III) to Iron(II)
Abstract: The aim of this study was to develop the analytical methods of iron through optimization reducing agent ability of iron (III) to iron (II) complex with formation of Fe (II) phenanthrolinee by spectrophotometry. Parameter of optimization that was used is acetic buffer pH, time of the complex formation and reducing agent concentrations in the determination of iron level (content). Reducing agents are sodium tiosulfate (Na 2 S 2 O 3 ), hidroxylamine hydrochloride (NH 2 OH.HCl) and sodium borohydride (NaBH 4 ). Results showed that the maximum wavelength of Fe (II)-Phenanthroline use all reducing agents is 510 nm, pH optimum of acetic buffer use reducing agent sodium tiosulfate (Na 2 S 2 O 3 ), hidroksilamin hydrochloride (NH 2 OH.HCl) and sodium borohydride (NaBH 4 ) is 4.5. Optimum formation of indwelling time of iron (II) complex phenanthrolinee use reducing agent Na 2 S 2 O 3 and NH 2 OH.HCl is 15 minutes, whereas reducing agent NaBH 4 is 5 minutes. Optimum concentration of reducing agent Na 2 S 2 O 3 that was used to reduce 5 ppm Fe(III) is 11 ppm, whereas for reducing agent NH 2 OH.HCl is 8 ppm and reducing agent NaBH 4 is 150 ppm.
Publication Year: 2020
Publication Date: 2020-01-09
Language: en
Type: article
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