高级氧化法(Advanced oxidation processes,AOPs)广泛应用于印染废水处理工艺中,然而该过程中产生的部分降解产物被证明具有比母体化合物更强的毒性,可能具有三致作用.另外,由于染料降解产物的不确定性、低残留性及难捕获性增加了该领域的研究难度,使其成为环境化学以及染料科学研究热点.本文汇总了应用AOPs降解染料的近期文献,并归纳了GC-MS、LC-MS等染料降解产物的重要分析和鉴定方法,同时整理和探讨了典型染料的降解途径作用机理以及可能生成的产物,并对染料降解产物鉴定方法及降解机理深入研究提出了建议.
Advanced oxidation processes (AOPs) are commonly applied for dyes degradation.However,some transformation products from the degradation processes have been proved to possess higher toxicity than the parent compounds,which have mutagenesis,carcinogenesis and teratogenesis effects.In addition,the uncertainty,low residual concentration and unavailability in capturing of dye degradation products have increased the difficulties of this research filed,which has became the hot topic in environmental chemistry and textile science.This paper summarized the recent research in the application of AOPs for dye degradation and the analysis and identification methods (GC-MS and LC-MS) for degradation products.Furthermore,detailed degradation pathways,reaction mechanisms of AOPs and possible degradation products for the important dye were discussed as well.Finally,future research about identification methods and degradation mechanism of dyes were proposed.
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