Effect of Basicity on Persulfate Reactivity
Effect of Basicity on Persulfate Reactivity
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DOI：
10.1061/(asce)ee.1943-7870.0000323
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发表时间：
2011-04-01
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影响因子：
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通讯作者：
Watts, Richard J.
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文献类型：
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作者：
Furman, Olha S.;Teel, Amy L.;Watts, Richard J.
用三种探针化合物研究了不同碱度条件下活化过硫酸盐体系中活性物种的产生。苯甲醚用于检测硫酸根自由基和羟基自由基。以硝基苯为探针检测羟自由基，六氯乙烷为还原剂探针。在pH 3：1下进行的过硫酸盐反应中发生最小探针化合物降解。本研究的结果表明，羟基自由基是碱活化过硫酸盐制剂中的主要活性氧物种，并且总体反应性随着碱：过硫酸盐比率的增加而增加。DOI：10.1061/（ASCE）EE.1943-7870.0000323。(C)2011年，美国土木工程师协会。
The generation of reactive species in activated persulfate systems under different conditions of basicity was investigated using three probe compounds. Anisole was used to detect both sulfate radical and hydroxyl radical. Nitrobenzene was used to detect hydroxyl radical, and hexachloroethane was used as a reductant probe. Minimal probe compound degradation occurred in persulfate reactions conducted at pH 3:1. The results of this research demonstrate that the hydroxyl radical is the dominant reactive oxygen species in base-activated persulfate formulations and that overall reactivity increases with increasing base: persulfate ratios. DOI: 10.1061/(ASCE)EE.1943-7870.0000323. (C) 2011 American Society of Civil Engineers.