Arctic threads: Microplastic fibres in Chukchi and Beaufort sea sediments

被引:2
作者
Dhineka, K. [1 ]
Mishra, Pravakar [1 ]
Ikenoue, Takahito [2 ]
Nakajima, Ryota [2 ]
Itoh, Motoyo [2 ]
Sambandam, M. [1 ]
Kaviarasan, T. [1 ]
Marigoudar, S. R. [1 ]
机构
[1] Govt India, Minist Earth Sci, Natl Ctr Coastal Res NCCR, NIOT Campus, Chennai 600100, India
[2] Japan Agcy Marine Earth Sci & Technol JAMSTEC, Res Inst Global Change, 2-15 Natsushima Cho, Yokosuka 2370061, Japan
关键词
Microplastics; Fibre; Sediment; Chukchi Sea; Beaufort Sea; MARINE-ENVIRONMENT; WATER; CONTAMINANTS; CANYON;
D O I
10.1016/j.marpolbul.2024.116954
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The influx of microplastics (MPs) into the Arctic Ocean poses a collective risk, particularly with pronounced sea ice depletion due to global warming. A total of 73 replicate sediment samples were collected at different depths (38 to 79 m) from Chukchi and the Beaufort Seas at 8 stations in the Arctic region during the R/V Mirai cruise (MR22-06C) from August to September 2022. The average concentration of MPs is 79.25 +/- 31.08 items/kg d.w. Fibrous MPs of 0-1 mm size range are predominant, with blue being the most prevalent colour. Polymer characterization identified polyethylene (PE) as the predominant polymer. Arctic Ocean regions face heightened health risks from the coexistence of MPs and harmful additives, amplifying concerns over plastic pollution. The alarming surge in MPs within Arctic sediment underscores the urgent need for a proactive, collaborative approach to mitigate this environmental threat and its far-reaching impacts.
引用
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页数:9
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