College of Environment, Sichuan Agricultural University, Chengdu, China.
College of Environment, Sichuan Agricultural University, Chengdu, China.
Environ Pollut. 2019 Feb;245:883-888. doi: 10.1016/j.envpol.2018.11.085. Epub 2018 Nov 27.
The concentrations, congener profiles and spatial distribution of 13 phthalate esters (PAEs) in the freshwater fish ponds in the Pearl River Delta (PRD) region were investigated in water and sediment samples collect from 22 sites during Jul. 2016-Sept. 2017. The di-2-ethylhexyl phthalate (DEHP) was the predominant compounds in both water and sediment samples, accounting for 70.1% and 66.1% of ∑PAEs, respectively. The DEHP concentrations in the water samples collected from the sites of Zhongshan (35.7 μg/L), Jingmen (17.3 μg/L) and Nanhai (14.2 μg/L) were higher than that collected from other sampling sites (p <0.05), and exceed the Chinese environmental quality standards for surface water (DEHP, 8.00 μg/L). The concentrations of ΣPAEs (mean and median were 11.8 mg/kg dw and 7.95 mg/kg dw) in sediment was higher than that in sediment of river and estuary in the PRD region (p <0.05). The median concentrations of DEHP and di-n-butyl phthalate (DBP) exceeded recommend environmental risk limit (ERL) that posed a potential risk to the aquaculture fish pond environment in the PRD.
本研究于 2016 年 7 月至 2017 年 9 月期间采集了珠江三角洲（PRD）地区 22 个淡水鱼塘的水和沉积物样本，调查了其中 13 种邻苯二甲酸酯（PAEs）的浓度、同系物分布特征及空间分布情况。在水和沉积物样本中，邻苯二甲酸二（2-乙基己基）酯（DEHP）均为主要化合物，分别占∑PAEs 的 70.1%和 66.1%。中山（35.7μg/L）、荆门（17.3μg/L）和南海（14.2μg/L）采样点采集的水样中 DEHP 浓度高于其他采样点（p<0.05），且超过中国地表水环境质量标准（DEHP，8.00μg/L）。沉积物中∑PAEs（平均值和中位数分别为 11.8mg/kg dw 和 7.95mg/kg dw）的浓度高于 PRD 地区河流和河口沉积物中的浓度（p<0.05）。DEHP 和邻苯二甲酸二正丁酯（DBP）的中位数浓度超过了建议的环境风险限值（ERL），对 PRD 地区水产养殖鱼塘环境构成潜在风险。
