R. DIAROT SUGIARO K.S., ARUM DWI KURNIA
This study aims to investigate the optimum conditions of five reducing agents viz., sodium thiosulfate (Na2S2O3), hydroxylamine hydrochloride (NH2OH·HCl), ascorbic acid (C6H8O6), sodium oxalate (Na2C2O4) and sodium sulfite (Na2SO3) for the reduction of Fe(III) to Fe(II) using UV-VIS spectrometry. The optimum pH of acetate buffer for Na2S2O3, NH2OH·HCl, C6H8O6, Na2C2O4 and Na2SO3 were identified as pH 4.5, 4.5, 5.0 and 4.0, respectively. The optimum reaction time for Na2S2O3 and NH2OH·HCl was found to be 15 minutes, whereas Na2C2O4 and Na2SO3 required longer times of 45 and 30 minutes, respectively. In terms of concentration, optimum levels varied, with Na2S2O3, NH2OH·HCl, C6H8O6, Na2C2O4, and Na2SO3 at 1, 7.5, 12, and 60 ppm in consecutive order. Additionally, the recovery percentages were evaluated, yielding results of 102.81 % for Na2S2O3, 116.71 % for NH2OH·HCl, 97.67 % for C6H8O6, and 85.94 % for Na2C2O4. The findings indicate effective conditions for the reduction of Iron(III) to Iron(II) using these agents.
@article{4829656c-1ca1-4547-a088-47ce7995ba71,
title={Optimization of Five Reducing Agents usi},
author={R. DIAROT SUGIARO K.S. and ARUM DWI KURNIA},
year={2026},
language={en}
}TY - JOUR TI - Optimization of Five Reducing Agents usi AU - R. DIAROT SUGIARO K.S. AU - ARUM DWI KURNIA PY - 2026 LA - en ER -
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