可溶性Mn(III)是一种具有较强氧化活性的单电子氧化剂，在地球化学氧化还原系统中扮演着重要角色，其对有机污染物的环境转化过程也引发了人们的广泛关注。然而，目前有关Mn(III)在自然水体中的光化学形成规律还知之甚少，同时Mn(III)对有机污染物的转化机制也尚不明确。因此，本项目紧紧围绕Mn(III)的光化学形成机制，选取环境中17种典型内分泌干扰物(EDCs)为研究对象，研究其在Mn(III)介导下的转化行为、反应机理以及毒性效应变化。考察温度、腐殖酸、光照强度、无机离子以及pH等水质因子对污染物转化速率的影响；建立分子结构参数与反应速率常数之间的QSAR模型，从分子结构层面探究影响转化速率的主要因素；将相关理论计算与产物鉴定相结合，提出Mn(III)介导的内分泌干扰物单电子氧化转化机理与反应路径。这项工作可为实际水体中环境内分泌干扰物的转化、归趋和去除提供新见解和理论参考。

Soluble Mn(III) is an important one-electron transfer redox species that plays a key role in the geochemical redox system. It also attracts much attention in the transformation process of organic pollutants in real waters. However, there has been little plausible evidence for the photochemical formation of Mn(III) in natural water, and the mechanism of Mn(III)-mediated transformation of organic pollutants is not yet known. In this study, based on the photochemical formation mechanism of Mn(III), 17 kinds of typical endocrine disruptors (EDCs) has been selected as the environmental pollutants to study the Mn(III)-mediated transformation behavior, reaction mechanism and toxicity changes. The influence of various water quality factors (temperature, humic acid, light intensity, inorganic ions, and pHs) on the reaction rate constants was also systematically investigated, and the QSAR model between molecular structure parameters and reaction rate constants was established to reveal the main molecular descriptors affecting the reaction rate. Combining the relevant theoretical calculation and experimental results of product identification, the Mn(III)-mediated one-electron oxidative transformation mechanism and reaction pathway of EDCs was proposed. This work can provide new insights and theoretical references for the transformation, fate and removal of environmental endocrine disruptors in real water.