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- W2892283290 abstract "Quinone-like moieties are active components of natural organic matter (NOM), whose redox reactions may exert substantial influence on the behavior of trace metals in natural waters. The interactions between NOM and antimony (Sb) influence the mobility and toxicity of Sb, but the mechanism of this process is poorly understood. In this study, batch oxidation experiments were conducted to evaluate the effects of model quinone-like moieties, i.e., 1,4-hydroquinone and low molecular weight phenolic acids (LMWPAs), including gallic acid, caffeic acid, and protocatechuic acid, on the oxidation of Sb(III) in the absence of light. The results indicated that Sb(III) was rapidly oxidized to Sb(V) in the presence of different phenolic acids in neutral and alkaline conditions. The oxidative reactions were pH dependent and the Sb(III) oxidation rate constant (kobs) increased by one or two orders of magnitude when the pH shifted from 7.0 to 9.0. The combination of electron paramagnetic resonance and free radical quenching studies elucidated that reactive oxygen species (hydrogen peroxide) and quinone species (the semiquinone radical and oxidized forms of LMWPAs) were the main contributors to the Sb(III) oxidation. According to density functional theory based calculations, the bond dissociation enthalpy of the phenolic hydroxyl group is well correlated with kobs, which is in line with its pro-oxidant property towards Sb(III) through the production of semiquinone radical. The findings of this study provided new insights into the mechanism of the oxidation of Sb(III) by NOM." @default.
- W2892283290 created "2018-09-27" @default.
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- W2892283290 date "2019-01-01" @default.
- W2892283290 modified "2023-10-15" @default.
- W2892283290 title "Mechanisms of Sb(III) oxidation mediated by low molecular weight phenolic acids" @default.
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- W2892283290 cites W1667273974 @default.
- W2892283290 cites W1873787012 @default.
- W2892283290 cites W1963870910 @default.
- W2892283290 cites W1965385596 @default.
- W2892283290 cites W1968216570 @default.
- W2892283290 cites W1974144564 @default.
- W2892283290 cites W1976875624 @default.
- W2892283290 cites W1989124146 @default.
- W2892283290 cites W1993026042 @default.
- W2892283290 cites W1993711084 @default.
- W2892283290 cites W1995340760 @default.
- W2892283290 cites W1997250527 @default.
- W2892283290 cites W2000235590 @default.
- W2892283290 cites W2002712344 @default.
- W2892283290 cites W2004192261 @default.
- W2892283290 cites W2006626900 @default.
- W2892283290 cites W2006841525 @default.
- W2892283290 cites W2009011625 @default.
- W2892283290 cites W2010821874 @default.
- W2892283290 cites W2012213912 @default.
- W2892283290 cites W2013196904 @default.
- W2892283290 cites W2013997637 @default.
- W2892283290 cites W2016817389 @default.
- W2892283290 cites W2022314763 @default.
- W2892283290 cites W2023575854 @default.
- W2892283290 cites W2025095151 @default.
- W2892283290 cites W2026660175 @default.
- W2892283290 cites W2031350988 @default.
- W2892283290 cites W2039578960 @default.
- W2892283290 cites W2041285304 @default.
- W2892283290 cites W2047371588 @default.
- W2892283290 cites W2049895282 @default.
- W2892283290 cites W2051802937 @default.
- W2892283290 cites W2051926421 @default.
- W2892283290 cites W2056620406 @default.
- W2892283290 cites W2057641560 @default.
- W2892283290 cites W2057962926 @default.
- W2892283290 cites W2058284343 @default.
- W2892283290 cites W2061913403 @default.
- W2892283290 cites W2062999553 @default.
- W2892283290 cites W2076883775 @default.
- W2892283290 cites W2076925517 @default.
- W2892283290 cites W2084251404 @default.
- W2892283290 cites W2085325281 @default.
- W2892283290 cites W2085433194 @default.
- W2892283290 cites W2085637751 @default.
- W2892283290 cites W2085865099 @default.
- W2892283290 cites W2086959952 @default.
- W2892283290 cites W2087252252 @default.
- W2892283290 cites W2093901597 @default.
- W2892283290 cites W2094992273 @default.
- W2892283290 cites W2109862952 @default.
- W2892283290 cites W2122329077 @default.
- W2892283290 cites W2137028777 @default.
- W2892283290 cites W2145259130 @default.
- W2892283290 cites W2151760289 @default.
- W2892283290 cites W2157558148 @default.
- W2892283290 cites W2264176673 @default.
- W2892283290 cites W2273685899 @default.
- W2892283290 cites W2313171181 @default.
- W2892283290 cites W2316689429 @default.
- W2892283290 cites W2318285751 @default.
- W2892283290 cites W2321363019 @default.
- W2892283290 cites W2324629182 @default.
- W2892283290 cites W2331616902 @default.
- W2892283290 cites W2341382637 @default.
- W2892283290 cites W2342382288 @default.
- W2892283290 cites W2408642289 @default.
- W2892283290 cites W2412235380 @default.
- W2892283290 cites W2472058786 @default.
- W2892283290 cites W2807966509 @default.
- W2892283290 cites W329452662 @default.
- W2892283290 doi "https://doi.org/10.1016/j.cej.2018.09.008" @default.
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