本文考察了蒽醌活化过硫酸盐过程中降解罗丹明B的特征．实验发现，Fe（Ⅲ）、不同种类和含量的蒽醌、pH值变化、添加自由基淬灭剂以及光照／非光照等不同条件下，对过硫酸盐活化过程中降解罗丹明B特征均产生不同程度的影响．结果表明，体系中不同含量醌活化过硫酸盐的条件下，罗丹明B表现出不同的降解特征；酸性和碱性条件下，过硫酸盐活化过程中氧化降解RhB的效能并无明显差别；相对于甲醇，叔丁醇可能是更有效的半醌自由基淬灭剂；含氧化敏感官能团结构的蒽醌类有机物AQS和AQDS能有效活化过硫酸盐，促进了过硫酸盐的氧化降解效能，使得罗丹明B脱色程度达到90％以上，这主要是反应体系中蒽醌类有机质能有效活化过硫酸盐生成过硫酸根自由基，使过硫酸盐的氧化性得到显著提高．Fe（Ⅲ）和蒽醌耦合作用对过硫酸盐氧化罗丹明B的活化作用比单纯的蒽醌活化效果更显著．
The current study investigated the influences of the simulated solar light irradiation, different quinones containing redox sensitive chemical structure, ferric iron, pH and racial quencher on the decoloration of Rhodamine B by quinone?activated persulfate process. The results showed the decoloration of Rhodamine B was influenced by activated persulfate in the presence of different concentrations of quinone. However, the extent of Rhodamine B decoloration showed no significant difference in acidic or alkaline conditions. Compared with ethanol, TBA was a more effective quencher for semi?quinone racials. Furthermore, the results indicated that the organic compords containing quinone structure, AQS and AQDS could effectively activate persulfate and enhance the degradation efficiency of persulfate and consequently increase the extent of Rhodamine B decolorazation. It was attributed to the semi?quinone racials generated by the quinones in the reaction system, because semi?quinone racials could effectively activate persulfates. Interaction between of quinone and Fe(Ⅲ) plays a key role in the activation of persulfates.
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