College of Marine Life Sciences, Ocean University of China, 266003, Qingdao, China.
Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China.
Environ Res. 2024 Nov 15;261:119746. doi: 10.1016/j.envres.2024.119746. Epub 2024 Aug 3.
Haizhou Bay, a semi-enclosed key aquaculture area in East China, has had relatively limited research focused on trace metals and perfluoroalkyl acids (PFAAs) in its biota. This study characterized the distribution, biomagnification and health risks of selected trace metals and PFAAs in various marine organisms from Haizhou Bay. Among the species examined, zinc (Zn) was the most prevalent metal, followed by copper (Cu) and chromium (Cr), whereas cadmium (Cd), total mercury (THg), and methylmercury (MeHg) contents were relatively low. Perfluorooctane sulfonate (PFOS) was the most abundant PFAA, followed by perfluorooctanoic acid (PFOA). The calculated trophic magnification factors (TMFs) were above one for Cr, THg, MeHg, and all PFAAs except perfluorobutanoic acid (PFBA) and perfluorotetradecanoic acid (PFTeDA). Across animal groups, gastropods exhibited relatively low levels of THg, MeHg, and perfluorosulfonic acids (∑PFSAs). By comparison, fish generally had lower levels of Cd and Cu compared to other animal groups, and demersal fish had significantly higher MeHg compared to gastropods. Certain organisms, such as cephalopods and shrimps, were found to pose potential health risks due to elevated levels of Cd, while levels of other studied metals, PFOS and PFOA generally appeared to be within safe limits for human consumption. Further research is needed to assess the sources and impacts of these and other contaminants.
海州湾是中国东部的一个半封闭关键水产养殖区，针对其生物体内痕量金属和全氟烷基酸（PFAAs）的研究相对较少。本研究对来自海州湾的各种海洋生物体内选定痕量金属和 PFAAs 的分布、生物放大和健康风险进行了描述。在所研究的物种中，锌（Zn）是最普遍的金属，其次是铜（Cu）和铬（Cr），而镉（Cd）、总汞（THg）和甲基汞（MeHg）的含量相对较低。全氟辛烷磺酸（PFOS）是最丰富的 PFAAs，其次是全氟辛酸（PFOA）。计算的营养级放大因子（TMFs）对于 Cr、THg、MeHg 和所有 PFAAs 均高于 1，除了全氟丁酸（PFBA）和全氟十四酸（PFTeDA）。在动物群体中，腹足类表现出相对较低的 THg、MeHg 和全氟磺酸（∑PFSAs）水平。相比之下，鱼类通常比其他动物群体具有较低的 Cd 和 Cu 水平，而底栖鱼类的 MeHg 水平明显高于腹足类。某些生物体，如头足类和虾类，由于 Cd 水平升高而被认为存在潜在的健康风险，而其他研究金属、PFOS 和 PFOA 的水平总体上似乎处于人类可接受的安全范围之内。需要进一步研究以评估这些和其他污染物的来源和影响。
