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- W2065481507 abstract "The kinetics of the reaction of the thiols 3-mercapto-1-propane sulfonic acid and 2-mercaptonicotinic acid were investigated under pseudo and non-pseudo first-order kinetics. Mercaptopropane sulfonic acid was oxidized to the sulfinic acid within 0.5 s and mercaptonicotinic acid was oxidized to the sulfenic acid within 1 s. Above a pH of 8.5 for mercaptopropane sulfonic acid and 9.0 for mercaptonicotinic acid the kinetic expression had three terms: one involving the concentration of the thiol, the ferrate and the hydrogen ions; one involving the concentration of the thiol and the ferrate ions; and one involving the concentration of the hydrogen and ferrate ions. A possible mechanism involves two rate-determining steps, one involving protonated ferrate and one involving unprotonated ferrate, plus direct degradation of ferrate. At pH values lower than those quoted above the rate-determining step only involved the reaction with the unprotonated ferrate. High thiol concentrations caused complex formation. These results are comparable with those obtained for ferrate oxidation of similar thiols." @default.
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- W2065481507 date "2003-05-01" @default.
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- W2065481507 title "The kinetics and mechanism of the oxidation of the thiols 3-mercapto-1-propane sulfonic acid and 2-mercaptonicotinic acid by potassium ferrate" @default.
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- W2065481507 doi "https://doi.org/10.1016/s0020-1693(03)00003-3" @default.
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