Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Ministry of Education, Qingdao/Collaborative Innovation Center of Marine Science and Technology, Qingdao 266100, China.
Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Ministry of Education, Qingdao/Collaborative Innovation Center of Marine Science and Technology, Qingdao 266100, China; Institute of Marine Chemistry, Ocean University of China, Qingdao 266100, China.
Sci Total Environ. 2018 Apr 1;619-620:93-102. doi: 10.1016/j.scitotenv.2017.11.070. Epub 2017 Nov 13.
A total of 133 seawater samples and 17 sediment samples were collected from 81 sampling sites in the Changjiang River Estuary and its adjacent area and were analyzed for 16 phthalate esters (PAEs). The Σ PAE concentrations in the seawater and sediment samples ranged from 180.3ng·L to 3421ng·L and from 0.48μg·g to 29.94μg·gdry weight (dw), respectively, with mean values of 943.6ng·L and 12.88μg·g. The distribution of ∑PAE concentrations in the water column showed that PAE concentrations in the bottom samples were higher than those in the surface samples (except the transect C located inside the Changjiang River Estuary), with the maxima appearing in the bottom layer at the offshore stations. Among the 16 PAEs, di (2-ethylhexyl) phthalate (DEHP), diisobutyl phthalate (DiBP), and dibutyl phthalate (DnBP) dominated the PAEs, with 25.1%, 21.1%, and 18.9% of the ΣPAEs in seawater, respectively. The comparison of ∑PAEs and salinities in transects C and A6 suggested that the Changjiang River runoff was an important driving factor influencing the distribution of PAEs. DEHP concentrations in water samples and DEHP and DnBP concentrations in sediment samples exceeded the environmental risk levels (ERL), indicating their potential hazard to the ocean environment.
共采集长江口及邻近海域 81 个站位的海水和沉积物样品 133 个和 17 个，分析了 16 种邻苯二甲酸酯（PAEs）。海水和沉积物中∑PAEs 浓度范围分别为 180.3ng·L-3421ng·L 和 0.48μg·g-29.94μg·gdw，平均值分别为 943.6ng·L 和 12.88μg·g。水柱中∑PAEs 浓度分布表明，底层样品中的 PAE 浓度高于表层样品（长江口内部的断面 C 除外），离岸站位的底层浓度最高。在 16 种 PAEs 中，邻苯二甲酸二（2-乙基己基）酯（DEHP）、邻苯二甲酸二异丁酯（DiBP）和邻苯二甲酸二丁酯（DnBP）占 PAEs 的主导地位，分别占海水∑PAEs 的 25.1%、21.1%和 18.9%。断面 C 和 A6 中∑PAEs 和盐度的比较表明，长江径流量是影响 PAEs 分布的重要驱动因素。水样中 DEHP 浓度和沉积物中 DEHP 和 DnBP 浓度超过环境风险水平（ERL），表明其对海洋环境具有潜在危害。
