Li Yaru, Zhao Zongshan, Zhang Daolai, Li Biying, Yin Ping
College of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China.
Qingdao Institute of Marine Geology, Qingdao, 266071, China.
Environ Geochem Health. 2024 Jul 13;46(9):310. doi: 10.1007/s10653-024-02095-z.
Yancheng coastal wetland, the largest coastal wetland in the west coast of the Pacific Ocean and the margin of the Asian continent, has significant environmental, economic and social effects on local human beings. The extensive contamination and potential risk of quinolone antibiotics (QNs) on local aquaculture and human health are still not clear until now. In this study, 52 surface sediment samples were collected to investigate the contamination status and polluted sources, and evaluate ecological risks of QNs in the south of Yancheng coastal wetland. The total contents of QNs ranged from 0.33 to 21.60 ng/g dw (mean value of 4.51 ng/g dw), following the detection frequencies of QNs ranging from 19.23 to 94.23%. The highest content of QNs occurred around an aquaculture pond dominated by flumequine. The total organic carbon contents of sediment were positively correlated with sarafloxacin and lomefloxacin (p < 0.05), indicating the enhanced absorption of these QNs onto sediments. Partial QNs, such as lomefloxacin, enrofloxacin, sarafloxacin and flumequine, presented the homology features originating from the emission of medical treatment and aquaculture. There was no potential risk of QNs to human beings but a potential risk to aquatic organisms (algae > plant > invertebrate). Totally, the management and protection of Yancheng coastal wetland should be of concern with aquaculture as the important industry.
盐城沿海湿地是太平洋西岸和亚洲大陆边缘最大的沿海湿地，对当地人类具有重大的环境、经济和社会影响。喹诺酮类抗生素（QNs）对当地水产养殖和人类健康的广泛污染及潜在风险至今仍不明确。本研究采集了52个表层沉积物样本，以调查盐城沿海湿地南部QNs的污染状况、污染源，并评估其生态风险。QNs的总含量范围为0.33至21.60 ng/g干重（平均值为4.51 ng/g干重），QNs的检出频率范围为19.23%至94.23%。QNs含量最高的区域出现在以氟甲喹为主的水产养殖池塘附近。沉积物的总有机碳含量与沙拉沙星和洛美沙星呈正相关（p < 0.05），表明这些QNs在沉积物上的吸附增强。部分QNs，如洛美沙星、恩诺沙星、沙拉沙星和氟甲喹，呈现出源于医疗和水产养殖排放的同源特征。QNs对人类没有潜在风险，但对水生生物有潜在风险（藻类>植物>无脊椎动物）。总体而言，盐城沿海湿地的管理和保护应关注作为重要产业的水产养殖。
