State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, No. 511 Kehua Street, Tianhe District, Guangzhou 510640, Guangdong Province, China.
Environ Pollut. 2013 Mar;174:71-7. doi: 10.1016/j.envpol.2012.11.008. Epub 2012 Dec 14.
The ocean is an important sink of land-based pollutants. Previous studies showed that serious antibiotic pollution occurred in the coastal waters, but limited studies focused on their presence in offshore waters. In this study, eleven antibiotics in three different categories were investigated in offshore waters of the Bohai Sea and the Yellow Sea in China. The results indicated that three antibiotics dehydration erythromycin, sulfamethoxazole and trimethoprim occurred throughout the offshore waters at concentrations of 0.10-16.6 ng L(-1) and they decreased exponentially from the rivers to the coastal and offshore waters. The other antibiotics all presented very low detection rates (<10%) and concentrations (<0.51 ng L(-1)). Although the concentrations were very low, risk assessment based on the calculated risk quotients (RQs) showed that sulfamethoxazole, dehydration erythromycin and clarithromycin at most of sampling sites posed medium or low ecological risks (0.01 < RQ < 1) to some sensitive aquatic organisms, including Synechococcus leopoliensis and Pseudokirchneriella subcapitata.
海洋是陆地污染物的重要汇。先前的研究表明，沿海海域存在严重的抗生素污染，但对其在近海海域的存在的研究有限。本研究调查了中国渤海和黄海近海海域的三种不同类别共 11 种抗生素。结果表明，三种抗生素（脱水红霉素、磺胺甲恶唑和甲氧苄啶）在整个近海海域均有检出，浓度为 0.10-16.6ng/L，并从河流到沿海和近海呈指数递减。其他抗生素的检出率均很低（<10%），浓度也很低（<0.51ng/L）。尽管浓度很低，但基于计算得出的风险商（RQs）进行的风险评估表明，磺胺甲恶唑、脱水红霉素和克拉霉素在大多数采样点对一些敏感水生生物（包括利奥波利斯鱼腥藻和斜生栅藻）构成了中低生态风险（0.01<RQ<1）。
