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中文摘要：
对比了在有无Co2＋催化剂存在时外加氯离子对Co/单过氧硫酸盐（Co/PMS）体系降解2,4,6-三氯苯酚（2,4,6-TCP）效果的影响,考察了不同浓度氯离子对2,4,6-三氯苯酚降解的动力学和总有机碳（TOC）的去除率.结果表明,氯离子对该体系降解2,4,6-三氯苯酚过程具有双重影响：在Co2＋存在条件下参与自由基反应,但提高其浓度又明显抑制2,4,6-TCP矿化;在无Co2＋存在条件下诱发非自由基反应,实现对氯酚的快速降解.通过气质联用（GC-MS）测定了反应的中间产物,并据此推断了降解的反应机理.
英文摘要：
Effects of additional chloride ion on the degradation of 2,4,6-trichlorophenol（2,4,6-TCP） by Co（II）/peroxymonosulfate（Co/PMS） oxidation system in the presence and absence of Co2＋ were compared by measuring degradation kinetics and changes of total organic carbon（TOC） at different chloride concentrations.The results indicate that chloride ion has a dual effect on degradation of 2,4,6-trichlorophenol by Co/PMS system： 1） it is involved in sulfate radical-based reactions,but obviously inhibits the mineralization of 2,4,6-TCP with the increasing concentrations of chloride;2） it triggers non-radical reaction with PMS alone to degrade 2,4,6-TCP.Based on the intermediate products identified by GC-MS,a degradation mechanism of 2,4,6-TCP in Co/PMS/Cl-system was proposed.
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