在含有碳酸氢根的中性溶液中，芬顿反应的产物是碳酸根自由基阴离子，而不是羟基自由基。
Carbonate-radical-anions, and not hydroxyl radicals, are the products of the Fenton reaction in neutral solutions containing bicarbonate.
机构信息
Department of Chemical Sciences, and the Schlesinger Family Center for Compact Accelerators, Radiation Sources and Applications, Ariel University, Ariel, Israel; Radiation Chemistry Department, Institute for Energy Security and Environmental Safety, Centre for Energy Research, Hungarian Academy of Sciences, Budapest, Hungary.
Chemistry Department, Nuclear Research Centre Negev, Beer-Sheva, Israel.
出版信息
Free Radic Biol Med. 2019 Feb 1;131:1-6. doi: 10.1016/j.freeradbiomed.2018.11.015. Epub 2018 Nov 17.
The Fenton reaction, Fe(HO) + HO → Oxidizing product, is of major importance in biology as the major cause of oxidative stress, and in advanced oxidation processes. It is commonly assumed that ·OH is the product of the Fenton reaction. The results presented herein point out that ·OH is indeed the oxidizing product in acidic solutions for [Fe(HO)] > [HO]; Fe is the active oxidizing product in neutral solutions; in slightly acidic solutions for [HO] > [Fe(HO)] a mixture of ·OH and Fe is formed. However CO· is the active oxidizing product in neutral solutions containing HCO even at low concentrations, i.e. under physiological conditions. The implications to our understanding of the origins of oxidative stress and of catalytic oxidations in advanced oxidation processes are discussed.
芬顿反应，Fe(HO) + HO → 氧化产物，在生物学中具有重要意义，是氧化应激的主要原因，也是高级氧化过程中的主要原因。通常认为·OH 是芬顿反应的产物。本文的结果指出，在[Fe(HO)] > [HO]的酸性溶液中，·OH 确实是氧化产物；在中性溶液中，Fe 是活性氧化产物；在[HO] > [Fe(HO)]的稍酸性溶液中，形成了·OH 和 Fe 的混合物。然而，在含有 HCO 的中性溶液中，即使在低浓度下，即生理条件下，CO·也是活性氧化产物。讨论了这对我们理解氧化应激的起源和高级氧化过程中的催化氧化的影响。
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