山东半岛典型海湾中烷基酚及双酚A的分布特征

烷基酚和双酚A是环境中最常见的内分泌干扰物。本研究对烟台四十里湾和套子湾以及青岛胶州湾表层海水中的壬/辛基酚(NP/OP)、壬/辛基酚单聚氧乙烯醚(NP1EO/OP1EO)以及双酚A(BPA)的浓度水平进行分析,结果显示:NP和NP1EO是最主要的污染物,河口和港口是海湾中污染物浓度最高的区域。总体而言,四十里湾中各污染物的浓度最高,其次为胶州湾,套子湾最低,与国内其他海湾区域相比,污染状况处于中等水平。相对于2005年,胶州湾水体中的烷基酚浓度明显降低。文章同时分析了几个湾的主要入海河流河水样品以及烟台污水处理厂出厂水样,发现污水处理厂出水是烟台四十里湾烷基酚的主要来源。在三个海湾中,烷基酚的分布主要受河流输入、生活污水排放和港口经济活动影响,同时,洋流和潮汐的稀释作用对污染物分布有明显影响。

Distribution characteristics of alkylphenols and bisphenol A in surface waters from typical bays around Shandong Peninsula

Alkylphenols(APs) and bisphenol A(BPA) are typical endocrine disruptors that ubiquitously exist in the environment.Concentrations of NP,OP,NP1EO,OP1EO and BPA were analyzed in the surface water of Sishili Bay(SSB),Taozi Bay(TZB),Jiaozhou Bay(JZB) and their adjacent rivers and effluents from wastewater treatment plants(WWTPs) in Shandong peninsula.The results showed that NP and NP1EO were the dominant pollutants.Most pollutants showed the highest level in the estuaries and port regions in the three bays.In general,the order of AP and BPA concentrations was SSB,JZB and TZB in descending order.Compared with other costal regions,levels of AP and BPA in this study were around the median.The levels of APs in JZB in 2010 in this study were significantly lower than that in 2005 in a previous study.Effluents from the two WWTPs were found to be the major sources of AP and BPA in SSB.Among the three bays,the distributions of AP and BPA were most influenced by the riverine outflow,domestic wastewater discharge,and industrial activities in port region.Meanwhile,ocean currents and tidal activities were also significantly influenced their distributions.