邻苯二甲酸酯(PAEs)具有环境激素效应，已被公认为是全球性污染物。鉴于其较强的憎水性，释放到水体中的PAEs通常会吸附在悬浮颗粒物或沉积物表面，因此，利用一种高效的技术去除水中吸附在颗粒物表面的PAEs至关重要。本项目拟采用新型水处理氧化剂高铁酸盐(Fe(VI))处理PAEs，对其动力学、降解机理和毒性变化进行系统地研究。在表征颗粒物的基础上，考察25种PAEs与天然水体中悬浮颗粒物和沉积物之间的吸附行为，进一步探讨一系列的实验条件对PAEs降解速率的影响；采用现代分析技术，鉴定中间产物结构，并结合量子化学计算，阐明Fe(VI)降解PAEs的反应机制；构建25种PAEs的降解速率常数和分子结构参数之间的QSAR模型，从分子结构层面揭示影响降解速率的主要因素；借助毒理学检测手段，综合产物鉴定，评价降解产物的毒性变化。本研究可为实际环境中PAEs的转化、去除及潜在的生态风险提供新见解和参考。

Phthalate esters (PAEs), a group of endocrine disrupting compounds, have attracted the scientific and public attention, because they are widely used and considered as ubiquitous environmental pollutants. Once released into the water environment, PAEs tend to be adsorbed on suspended particles or sediments due to their strong hydrophobicity. Therefore, it is necessary to develop efficient treatment methods to eliminate PAEs adsorbed onto solid particles in water. In this project, ferrate (Fe(VI)) has been selected as the oxidizing agent to study the kinetics, reaction mechanism and toxicity changes of PAEs. After the detailed characterizations of solid particles, the adsorption behavior between 25 PAEs and suspended particles and sediments is examined in natural water, and a series of kinetic experiments are carried out to study the influence of various factors on PAEs removal. Modern analytical techniques are employed to identify the degradation products. Combining the relevant theoretical calculation and experimental results, the Fe(VI)-mediated reaction mechanism of PAEs is proposed. The QSAR model between molecular structure parameters and reaction rate constants is established to reveal the main molecular descriptors affecting the reaction rate. The toxicity changes of degradation products are evaluated according to toxicology tests and identification of intermediate products. This project provides new insights and references for the transformation, removal and potential ecological risks of PAEs in the actual environment.