Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China.
Shandong Yellow River Delta National Nature Reserve Administration Committee, Dongying 257091, China.
J Hazard Mater. 2022 Sep 5;437:129365. doi: 10.1016/j.jhazmat.2022.129365. Epub 2022 Jun 13.
Polycyclic aromatic hydrocarbon (PAH) pollution caused by marine oil spills and antibiotic pollution caused by aquaculture industries were common environmental problems in the Yellow River Estuary, China. But few data are reported on the bioaccumulation and influencing factors of these two types of contaminants in aquaculture simultaneously. This study investigated the occurrence and bioaccumulation of PAHs and antibiotics in aquaculture areas of the Yellow River Estuary, and explored the factors affecting the bioaccumulation. 3-ring PAHs and fluoroquinolones were dominant contaminants in the study area. The concentrations of PAHs and antibiotics in lipid-rich tissues (fish viscus, shrimp head, and crab ovary) was higher than that in muscle. It indicated that the lipid content was an important factor affecting the bioaccumulation capacity. Physicochemical parameters (K and D) and the concentrations of PAHs or antibiotics also affected the bioaccumulation capacity of them. Meanwhile, biotransformation was a factor affecting the bioaccumulation of PAHs and antibiotics. The biotransformation (pyrene to 1-hydroxypyrene and enrofloxacin to ciprofloxacin) might explain the poor correlation between log bioaccumulation factor and log K/log D in fish. Risk assessment indicated that PAHs in mature aquatic products posed carcinogenic risks to human and enoxacin in sea cucumbers posed health risks to human.
多环芳烃（PAH）污染由海洋溢油和抗生素污染由水产养殖业是中国黄河口常见的环境问题。但很少有数据报告这两种类型的污染物在水产养殖中的同时生物累积和影响因素。本研究调查了黄河口水产养殖区多环芳烃和抗生素的发生和生物累积情况，并探讨了影响生物累积的因素。三环 PAH 和氟喹诺酮类是研究区域的主要污染物。多环芳烃和抗生素在富含脂质的组织（鱼类内脏、虾头和蟹卵）中的浓度高于肌肉中的浓度。这表明脂质含量是影响生物累积能力的重要因素。理化参数（K 和 D）和多环芳烃或抗生素的浓度也影响它们的生物累积能力。同时，生物转化是影响多环芳烃和抗生素生物累积的一个因素。生物转化（芘转化为 1-羟基芘和恩诺沙星转化为环丙沙星）可能解释了鱼类中 log 生物累积因子与 log K/log D 之间的不良相关性。风险评估表明，成熟水产品中的多环芳烃对人体有致癌风险，海参中的恩诺沙星对人体健康有风险。
