Department of Biological Sciences, Florida International University, 3000 NE 151st Street, North Miami, FL 33181, United States of America.
Department of Biological Sciences, Florida International University, 3000 NE 151st Street, North Miami, FL 33181, United States of America.
Mar Pollut Bull. 2020 Aug;157:111281. doi: 10.1016/j.marpolbul.2020.111281. Epub 2020 May 29.
Shark fin is one of Asia's most valued dried seafood products, with over 80 shark species traded in Hong Kong [HK]. We analyzed processed shark fins from mainland China and HK markets (n = 267) for mercury, methyl‑mercury, and arsenic, to inform consumers, policy makers and public health officials on the health risks of ingesting fins from nine of the most common shark species in the fin trade. Fins from all species frequently exceed Hg limits established by HK authorities. Most of the mercury found is in the form of methyl‑mercury (69.0 ± 33.5%). Five species surpass methyl‑mercury PTWIs and blue shark fins can exceed inorganic arsenic BMDL. Species-of-origin was a significant predictor of heavy metal concentrations, with higher mercury concentrations associated with coastal sharks and lower arsenic levels found with increasing shark trophic level. Species-specific labeling would help consumers avoid shark fin products that pose the highest health risk.
鱼翅是亚洲最具价值的干海鲜产品之一，在香港[HK]有 80 多种鲨鱼品种进行交易。我们分析了来自中国大陆和香港市场的加工鱼翅（n=267）中的汞、甲基汞和砷，以告知消费者、政策制定者和公共卫生官员摄入来自鳍贸易中最常见的九种鲨鱼物种的鳍的健康风险。所有品种的鱼翅经常超过香港当局规定的汞限量。发现的大部分汞以甲基汞的形式存在（69.0±33.5%）。五种物种超过甲基汞暂定每周摄入量，蓝鲨的鱼翅可能超过无机砷的生物监测水平。物种起源是重金属浓度的重要预测因子，沿海鲨鱼的汞浓度较高，随着鲨鱼营养水平的增加，砷水平降低。特定物种的标签将有助于消费者避免存在最高健康风险的鱼翅产品。
