Risk Assessment Research Center, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea; Department of Ocean Science, University of Science and Technology, Daejeon 34113, Republic of Korea.
Risk Assessment Research Center, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea.
Sci Total Environ. 2023 Jan 15;856(Pt 1):158893. doi: 10.1016/j.scitotenv.2022.158893. Epub 2022 Sep 19.
Plastic debris can act as a source of hazardous chemicals in the ocean, but the significance of its role in the environment is not yet known. To address this question, a comprehensive field study of highly contaminated and non-contaminated islands was conducted. Comparison of the plastic additive hexabromocyclododecanes and ubiquitous contaminants polychlorinated biphenyls in marine invertebrates showed that the load of stranded plastics plays a significant role in the bioaccumulation of plastic additives in the marine debris-contaminated island. Fugacity analysis indicates that net flow of hexabromocyclododecanes occurred from plastics to environmental reservoirs. Additionally, significantly higher levels of antioxidants, 2,4-di-tert-butylphenol and butylated hydroxytoluene, was found in the marine invertebrates inhabiting the marine debris-contaminated island than those inhabiting the marine debris-noncontaminated island, but ultraviolet stabilizers did not show the regional difference. This study provides the first field evidence that the movement of plastic debris in the ocean drives the dispersal of plastic additives to pristine waters.
塑料碎片可能成为海洋中有害化学物质的来源，但它在环境中的作用尚未可知。为了解决这个问题，对高度污染和非污染岛屿进行了全面的野外研究。对海洋无脊椎动物中六溴环十二烷和多氯联苯等常见污染物的塑料添加剂进行了比较，结果表明搁浅塑料的负荷在海洋碎片污染岛屿中塑料添加剂的生物积累中起着重要作用。逸度分析表明，六溴环十二烷从塑料向环境储层净流动。此外，在海洋无脊椎动物中发现了显著更高水平的抗氧化剂 2,4-二叔丁基苯酚和丁基化羟基甲苯，它们栖息在海洋碎片污染岛屿上，而不是栖息在海洋碎片非污染岛屿上，但紫外线稳定剂没有表现出区域差异。本研究首次提供了野外证据，证明海洋中塑料碎片的运动将塑料添加剂扩散到原始水域。
