The presence of a large number of micropollutants in the environment, including priority and emerging substances, poses a significant risk to surface and groundwater quality. Among them, trichlorobenzenes are widely used in the syntheses of dyes, pesticides, solvents, and other chemicals and have been identified as priority pollutants by the European Water Framework Directive. The main goal of this study was to investigate the behavior of 1,2,3-trichlorobenzene (TCB) during the sulfate radical–based advanced oxidation processes (SR-AOPs) involving UV activation of persulfate or peroxymonosulfate (UV/S₂O₈²⁻ and UV/HSO₅⁻ processes). For this purpose, TCB was subjected to SR-AOPs in synthetic water matrices containing humic acids or hydrogencarbonate and natural water samples and a comparative evaluation of the degradation process was made. The toxicity of the oxidation by-products was also assessed. The evaluation of TCB degradation kinetics results using principal component analysis indicates that the efficacy of the SR-AOPs was highly dependent on the pH, initial oxidant concentration, UV fluence, and matrix characteristics. In natural waters, TCB degradation by the UV/S₂O₈²⁻ process proved to be most effective in acidic conditions (pH 5), while the UV/HSO₅⁻ process showed the highest efficacy in basic conditions (pH 9.5), achieving a maximum TCB degradations of 97–99%. The obtained results indicate that UV/S₂O₈²⁻ and UV/HSO₅⁻ as new generation oxidation processes have significant potential for TCB removal from water and result in only minor toxicity after treatment (14–23% of Vibrio fischeri bioluminescence inhibition).

环境中存在大量微污染物，包括优先和新兴物质，对地表和地下水质量构成重大风险。其中，三氯苯广泛用于染料、农药、溶剂和其他化学品的合成，并已被欧洲水框架指令确定为优先污染物。本研究的主要目标是研究 1,2,3-三氯苯 (TCB) 在基于硫酸根自由基的高级氧化过程 (SR-AOP) 中的行为，该过程涉及过硫酸盐或过硫酸盐 (UV/S ₂ O ₈ ²⁻和 UV/HSO ₅ ⁻进程）。为此，在含有腐殖酸或碳酸氢盐的合成水基质和天然水样品中，对 TCB 进行了 SR-AOP，并对降解过程进行了比较评估。还评估了氧化副产物的毒性。使用主成分分析对 TCB 降解动力学结果进行的评估表明，SR-AOP 的功效高度依赖于 pH 值、初始氧化剂浓度、紫外线通量和基质特性。在天然水中，经 UV/S ₂ O ₈ ²⁻过程证明在酸性条件下（pH 5）最有效，而 UV/HSO ₅ ^-该工艺在碱性条件下（pH 9.5）显示出最高的功效，实现了 97-99% 的最大 TCB 降解。获得的结果表明，UV/S ₂ O ₈ ²⁻和 UV/HSO ₅ ⁻作为新一代氧化过程具有从水中去除 TCB 的巨大潜力，并且处理后仅产生轻微毒性（14-23% 的费氏弧菌生物发光抑制） ）。