White and wonderful? Microplastics prevail in snow from the Alps to the Arctic

被引：1056

作者：

Bergmann, Melanie ^{[1
]}

Muetzel, Sophia ^{[1
]}

Primpke, Sebastian ^{[1
]}

Tekman, Mine B. ^{[1
]}

Trachsel, Jurg ^{[2
]}

Gerdts, Gunnar ^{[1
]}

机构：

[1] Helmholtz Zentrum Polar & Meeresforsch, Alfred Wegener Inst, Handelshafen 12, D-27570 Bremerhaven, Germany

[2] WSL Inst Snow & Avalanche Res SLF, Fluelastr 11, CH-7260 Davos, Switzerland

来源：

SCIENCE ADVANCES | 2019年 / 5卷 / 08期

关键词：

MARINE LITTER; SEA; FIBERS; PARTICLES; NORTH; CONTAMINATION; POLLUTION; FALLOUT;

D O I：

10.1126/sciadv.aax1157

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

070301 [无机化学]; 070403 [天体物理学]; 070507 [自然资源与国土空间规划学]; 090105 [作物生产系统与生态工程];

摘要：

Microplastics (MPs) are ubiquitous, and considerable quantities prevail even in the Arctic; however, there are large knowledge gaps regarding pathways to the North. To assess whether atmospheric transport plays a role, we analyzed snow samples from ice floes in Fram Strait. For comparison, we investigated snow samples from remote (Swiss Alps) and populated (Bremen, Bavaria) European sites. MPs were identified by Fourier transform infrared imaging in 20 of 21 samples. The MP concentration of Arctic snow was significantly lower (0 to 14.4 x 10(3) N liter(-1)) than European snow (0.19 x 10(3) to 154 x 10(3) N liter(-1)) but still substantial. Polymer composition varied strongly, but varnish, rubber, polyethylene, and polyamide dominated overall. Most particles were in the smallest size range indicating large numbers of particles below the detection limit of 11 mu m. Our data highlight that atmospheric transport and deposition can be notable pathways for MPs meriting more research.

引用

页数：10

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