Piyawardhana Nathangi, Weerathunga Veran, Chen Hsu-Sen, Guo Laodong, Huang Po-Jung, Ranatunga R R M K P, Hung Chin-Chang
Department of Oceanography, National Sun Yat-sen University, 70 Lien-hai Rd., Kaohsiung 80424, Taiwan, ROC.
School of Freshwater Sciences, University of Wisconsin-Milwaukee, 600 E Greenfield Ave., Milwaukee, WI 53204, USA.
J Hazard Mater. 2022 Feb 5;423(Pt B):127093. doi: 10.1016/j.jhazmat.2021.127093. Epub 2021 Sep 2.
The major risk of microplastics in marine environments is the bioaccumulation in marine organisms. Plastic ingestion by marine organisms has been investigated and recently more attention has been given to microplastics in seafood. However, it is seldom reported the occurrence of microplastics in marine commercial dried fish products available for human consumption. Here, we report the occurrence of microplastics in 14different marine dried fish products from seven Asian countries. Microplastics were observed in most dried fish, with fibers representing ~80% of the total-microplastics. The major plastic polymers, identified using Micro-Raman spectroscopy, included polyethylene (35%), polyethylene terephthalate (26%), polystyrene (18%), polyvinyl chloride (12%), and polypropylene (9%). The highest count, in either per individual (1.92 ± 0.12) or per gram of dried fish (0.56 ± 0.03), were found in Etrumeus micropus from Japan. Marine dried fish, which are typically eaten whole, may contribute to the ingestion of microplastics by humans, posing potential health risks especially in Asian countries. Further studies are needed to identify the occurrence of smaller sized microplastics and nanoplastics and their potential health impacts.
海洋环境中微塑料的主要风险是在海洋生物体内的生物累积。海洋生物摄入塑料的情况已得到研究，最近人们对海产品中的微塑料给予了更多关注。然而，关于可供人类食用的海洋商业干鱼产品中微塑料的存在情况鲜有报道。在此，我们报告了来自七个亚洲国家的14种不同海洋干鱼产品中微塑料的存在情况。在大多数干鱼中都观察到了微塑料，其中纤维约占微塑料总量的80%。使用显微拉曼光谱鉴定出的主要塑料聚合物包括聚乙烯（35%）、聚对苯二甲酸乙二酯（26%）、聚苯乙烯（18%）、聚氯乙烯（12%）和聚丙烯（9%）。在来自日本的小公鱼中，无论是单个个体中的微塑料数量（1.92±0.12）还是每克干鱼中的微塑料数量（0.56±0.03）都是最高的。通常整条食用的海洋干鱼可能会导致人类摄入微塑料，尤其在亚洲国家带来潜在健康风险。需要进一步研究以确定更小尺寸的微塑料和纳米塑料的存在情况及其潜在健康影响。
