Li Ting, Yin Pinghe, Zhao Ling, Wang Guifang, Yu Qiming Jimmy, Li Huanyong, Duan Shunshan
Department of Chemistry, Jinan University, Guangzhou 510632, China E-mail:
Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, Department of Environmental Engineering, Jinan University, Guangzhou 510632, China.
Water Sci Technol. 2015;71(2):183-90. doi: 10.2166/wst.2014.485.
The aquatic environments of the Pearl River Delta (PRD) in China have been contaminated by various industrial chemicals from local industries. In this study, the spatial-temporal distribution of six priority phthalate esters (PAEs) in surface water and sediments from the PRD was investigated. The PAEs were detected with total concentrations (Σ6PAEs) ranging from 0.35 to 20.70 μg L⁻¹ in surface water and dry weight ranging from 0.88 to 5.69 μg g⁻¹ in sediments. The Σ6PAEs concentrations in surface water were higher in the wet season than those in the dry season, while the opposite pattern was observed in sediments. Di(2-ethylhexyl) phthalate (DEHP) was the most abundant congener, which was higher than those reported in the literature. Risk quotients for relevant aquatic organisms were obtained and showed that most of these PAEs, in particular, butyl benzyl phthalate, DEHP and di-n-octyl phthalate, have significant potential health and ecological risks for the aquatic environment studied.
中国珠江三角洲（PRD）的水生环境已受到当地工业排放的各种工业化学品的污染。在本研究中，对珠江三角洲地表水和沉积物中六种优先邻苯二甲酸酯（PAEs）的时空分布进行了调查。PAEs在地表水中的总浓度（Σ6PAEs）范围为0.35至20.70μg L⁻¹，在沉积物中的干重范围为0.88至5.69μg g⁻¹。地表水中的Σ6PAEs浓度在雨季高于旱季，而沉积物中则呈现相反的模式。邻苯二甲酸二（2-乙基己基）酯（DEHP）是含量最高的同系物，高于文献报道的含量。获得了相关水生生物的风险商数，结果表明，这些PAEs中的大多数，特别是邻苯二甲酸丁苄酯、DEHP和邻苯二甲酸二正辛酯，对所研究的水生环境具有重大的潜在健康和生态风险。
