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A kinetic study using voltammetry and spectrophotometric measurements on the Trolox/DPPH•, in hydro-ethanolic and ethanolic medium is presented. The heterogenous electrochemical rates were obtained from the peak parameters in quasireversible and irreversible conditions and the homogenous rate constant and partial reaction orders were obtained using reaction half-life.

Keywords: Antioxidants, Trolox, DPPH•, voltammetry, spectrophotometry, kinetics