Huike Zhang, Chao Zhang, Yifeng Huang, Xiaohui Yi, Xujun Liang, Lee Chang-Gu, Mingzhi Huang, Guang-Guo Ying
SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, School of Environment, South China Normal University, Guangzhou, PR China.
School of Civil Engineering & Transportation, South China University of Technology, Guangzhou, PR China.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2022;57(2):130-138. doi: 10.1080/10934529.2022.2037375. Epub 2022 Feb 17.
The occurrence and distribution of six phthalate acid esters (PAEs) in surface water and sediment of the Pearl River were investigated, including Xijiang River (XR), Beijiang River (BR), Lingdingyang Estuary (LE), and Guangzhou River (GR) in South China. Six target PAEs were identified in surface water and sediment at almost all sites in the Pearl River, with di(2-ethyl-ethyl) phthalate (DEHP) and dibutyl phthalate (DBP) as dominant PAEs. Total 6 PAEs (ΣPAEs) in surface water and sediment ranged from 1,797.5 to 4,968.5 ng L and 95.24 to 3,677.26 ng g dw, respectively. In addition, the contamination levels of PAEs in the Pearl River are in the following order: XR > BR > GR > LE for surface water and BR > XR > GR for sediment. Local agricultural activities, industrial production, water confluence, and seawater intrusion are the probable sources of PAEs in the Pearl River. Based on correlation analysis, the possible collocation patterns of different PAEs were revealed. The risk assessment indicates that residual PAEs in the Pearl River pose a serious threat to the ecological environment. According to risk characterization of fish living in the Pearl River, the decreasing order of health risks was: GR > LE > XR > BR.
对中国南方珠江的西江（XR）、北江（BR）、伶仃洋河口（LE）和广州河段（GR）地表水和沉积物中六种邻苯二甲酸酯（PAEs）的发生与分布情况进行了调查。珠江几乎所有采样点的地表水和沉积物中均检测出六种目标PAEs，其中邻苯二甲酸二（2-乙基己基）酯（DEHP）和邻苯二甲酸二丁酯（DBP）为主要PAEs。地表水和沉积物中6种PAEs总量（ΣPAEs）分别在1797.5至4968.5 ng/L和95.24至3677.26 ng/g干重之间。此外，珠江中PAEs的污染水平排序如下：地表水为XR＞BR＞GR＞LE，沉积物为BR＞XR＞GR。当地农业活动、工业生产、水流汇合以及海水入侵是珠江PAEs的可能来源。通过相关性分析，揭示了不同PAEs可能的搭配模式。风险评估表明，珠江中残留的PAEs对生态环境构成严重威胁。根据珠江鱼类的风险特征，健康风险由高到低依次为：GR＞LE＞XR＞BR。
