Poyang Lake is the first freshwater lake in China, which is an important drinking water source. In recent years, industrial pollution has led to the increased phthalate acid esters (PAEs) in Poyang Lake. PAEs are a class of typical endocrine disruptors that can accumulate in organisms and interfere with their secretion systems. Thus, the accurate determination of PAEs in Poyang Lake is important for health risk prediction and the development of corresponding control means. Monitoring organic pollutants in water using the diffusive gradient in thin films technique (DGT) has attracted much attention due to more accuracy and convenience than the traditional methods. This study used an inexpensive amphiphilic cyclodextrin polymer (PBCD) as the sorbent for the binding gel. This new binding gel has an ultra-high specific surface area and excellent adsorption performance. Diffusion coefficients of the five PAEs were determined, and the performance of DGT such as adsorption capacity and deployment time (1–4 days) was tested using five PAEs as models. The assembled PBCD-DGT was used to examine the performance in a complex simulated water environment. The sampling capability of PBCD-DGT was verified in Yangshan Lake, and a large-scale field application was conducted in Poyang Lake basin. The results of 11 sampling points showed that the concentration ranges of dimethyl phthalate, diethyl phthalate, diallyl phthalate, dipropyl phthalate, and dibutyl phthalate were 434–2594 ng/L, 40–314 ng/L, 80–527 ng/L, 45–308 ng/L, and ND-182 ng/L, respectively. The health risk index (HI) and ecological risk quotient (RQ) values of PAEs in the Poyang Lake watershed were far below 1, indictating a lower health and ecological risk. Considering that PAEs are bioaccumulative and persistent, it is very necessary to continue to pay attention to its pollution status and health and ecological risk changes in Poyang Lake Basin in the future.

鄱阳湖是我国第一座淡水湖，是重要的饮用水源。近年来，工业污染导致鄱阳湖邻苯二甲酸酯类（PAEs）增多。PAEs 是一类典型的内分泌干扰物，可在生物体内积累并干扰其分泌系统。因此，鄱阳湖PAEs的准确测定对于健康风险预测和相应控制手段的开发具有重要意义。使用薄膜梯度技术（DGT）监测水中有机污染物由于比传统方法更准确、更方便而备受关注。本研究使用廉价的两亲环糊精聚合物 (PBCD) 作为结合凝胶的吸附剂。这种新型结合凝胶具有超高的比表面积和优异的吸附性能。确定了 5 种 PAE 的扩散系数，并以 5 种 PAE 为模型测试了 DGT 的吸附能力和部署时间（1-4 天）等性能。组装的 PBCD-DGT 用于检查复杂模拟水环境中的性能。PBCD-DGT的采样能力在阳山湖进行了验证，并在鄱阳湖流域进行了大规模现场应用。11个采样点的结果表明，邻苯二甲酸二甲酯、邻苯二甲酸二乙酯、邻苯二甲酸二烯丙酯、邻苯二甲酸二丙酯、邻苯二甲酸二丁酯的浓度范围分别为434~2594 ng/L、40~314 ng/L、80~527 ng/L、45分别为 –308 ng/L 和 ND-182 ng/L。鄱阳湖流域PAEs的健康风险指数（HI）和生态风险商（RQ）值远低于1，表明健康和生态风险较低。考虑到PAEs具有生物累积性和持久性，未来继续关注鄱阳湖流域其污染状况及健康生态风险变化十分必要。