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碘代消毒副产物在净水工艺中的生成机制与控制措施
Formation mechanism and control measures of iodinated disinfection by-products in drinking water process
【摘要】 碘代消毒副产物(I-DBPs)已经在越来越多的城市净水厂出水中被检出.I-DBPs的生成是由于碘源(包括碘化物和碘代显影剂)、氧化剂、前体物质(主要是天然有机物)之间相互作用的结果.尽管从目前来看,I-DBPs的浓度维持在ng·L-1—μg·L-1的数量级,但是相比氯代、溴代消毒副产物,其具有更强的细胞毒性和遗传毒性,因此研究影响I-DBPs生成的因素及其在净水工艺中行之有效的控制措施就显得尤为重要.对碘源、毒性特征、生成机制、控制措施进行了综述.
【Abstract】 Iodinated disinfection by-products( I-DBPs) have been detected in the effluents of an increasing number of drinking water treatment plants. I-DBPs are formed as a result of reactions among the sources of iodine( including iodide and iodinated X-ray constrast media),oxidants and precursors( mainly natural organic matter). Although the concentrations are at levels of ng·L-1—μg·L-1nowdays,in terms of cytotoxicity and genotoxicity,I-DBPs are generally more toxic than chlorinated and brominated analogs. So it is especially significant to understand the comprehensive factors that influence I-DBPs formation and effective strategies to contorl I-DBPs generation in drinking water process.The source of indine,toxicity characteristics,formation mechanism and control measures of I-DBPs are summarized.
【Key words】 Iodinated disinfection by-products; source of indine; toxicity characteristics; formation mechanism; control measures;
- 【文献出处】 环境化学 ,Environmental Chemistry , 编辑部邮箱 ,2016年06期
- 【分类号】TU991.25
- 【被引频次】12
- 【下载频次】415