Xu Elvis G B, Liu Shan, Ying Guang-Guo, Zheng Gene J S, Lee Joseph H W, Leung Kenneth M Y
The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China.
State Key Laboratory of Organic Geochemistry, CAS Centre for Pearl River Delta Environmental Pollution and Control Research, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China.
Mar Pollut Bull. 2014 Aug 30;85(2):352-62. doi: 10.1016/j.marpolbul.2014.02.029. Epub 2014 Mar 17.
We determined the concentrations of 12 endocrine disrupting chemicals (EDCs) in sewage effluents collected from three different sewage treatment plants (STPs) in Hong Kong, and found 4-nonylphenol (NP) and bisphenol A (BPA) were the most abundant EDCs. Effluent concentrations of NP and BPA were higher in dry season than in wet season, but opposite seasonal changes of NP were observed in receiving waters, probably due to the surface runoff. The two secondary STPs showed higher removal efficiency for these compounds than the preliminary STP, while having higher removal efficiency in wet season. Therefore, it is necessary to upgrade the preliminary STP and improve the EDC removal efficiency in dry season. Seawaters from the Cape D' Aguilar Marine Reserve adjacent to these STPs also exhibited elevated NP levels with a hazard quotient >1. Furthermore, diluted effluents from the STPs elicited significant transcriptional responses of EDC-related genes in the marine medaka fish.
我们测定了从香港三个不同污水处理厂（STP）收集的污水中12种内分泌干扰化学物质（EDC）的浓度，发现4-壬基酚（NP）和双酚A（BPA）是含量最高的EDC。NP和BPA的出水浓度在旱季高于雨季，但在受纳水体中观察到NP的季节变化相反，这可能是由于地表径流所致。两个二级污水处理厂对这些化合物的去除效率高于一级污水处理厂，且在雨季具有更高的去除效率。因此，有必要升级一级污水处理厂并提高旱季EDC的去除效率。与这些污水处理厂相邻的鹤咀海岸保护区的海水中NP水平也有所升高，危害商>1。此外，污水处理厂的稀释废水在海洋青鳉鱼中引发了EDC相关基因的显著转录反应。
