Microplastics in the first-year sea ice of the Novik Bay, Sea of Japan

Chubarenko, Irina; Lazaryuk, A. Yu.; Orlova, T. Yu.; Lobchuk, Olga; Raguso, Clarissa; Zyubin, Andrey; Lasagni, Marina; Saliu, Francesco

doi:10.1016/j.marpolbul.2022.114236

Cited by 7 publications

(9 citation statements)

References 32 publications

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“…In terms of morphology, as observed from this work (Fig. 5b), fragments were the dominant shape for small microparticles (25-300 m), whereas fiber shapes were common in larger size classes in MPs from first-year sea ice of the Novik Bay 15 . von Friesen et al 11 analyzed anthropogenic microparticles including MPs in both seawater and sea ice from Svalbard.…”

Section: Discussionsupporting

confidence: 73%

“…5b) are consistent with general trends reported from earlier works. The number of MPs observed generally increases concomitantly with decreasing size 10,14,15 . In terms of morphology, as observed from this work (Fig.…”

Section: Discussionmentioning

confidence: 93%

“…5b), whereas "fibers" were generally dominant in seawater. Based on analyses of the depth profiles and size distributions of fragment and fiber MPs in the ice from Novik Bay, Chubarenko et al 15 have suggested preferential leakage of fiber MPs with brines during sea ice desalination.…”

Section: Discussionmentioning

confidence: 99%

“…They suggested sea ice as a major historic global sink of MPs. Subsequently, several studies [10][11][12][13][14][15] have confirmed that MP concentrations in sea ice are orders of magnitude higher than those in surface seawater everywhere in ice-covered seas. Reportedly, the estimated amount of plastic particles (sum of MPs and mesoplastics) entrapped in sea ice of the western Arctic Ocean based on seasonal sea-ice coverage data and plastic-particle concentrations obtained from ice core analyses is comparable to that of MP stocks afloat in the global oceans 14 .…”

Section: Introductionmentioning

confidence: 95%

“…Nevertheless, because of scant field data [9][10][11][12][13][14][15]20,21 , little is known about the features and pathways of MPs in sea ice. To elucidate the nature and origin of MPs in sea ice, we investigated the abundance, polymer type, size, and shape of MPs in sea ice drifted to the Shiretoko Peninsula, the southern end of the Sea of Okhotsk, using techniques based on microscopy and micro-Fourier Transform Infrared Spectroscopy (micro-FTIR).…”

Section: Introductionmentioning

confidence: 99%

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Microplastics in sea ice drifted to the Shiretoko Peninsula, the southern end of the Sea of Okhotsk

Ohno,

Iizuka

2024

Preprint

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Sea ice is regarded as a temporal sink and carrier of microplastics (MPs). Nevertheless, knowledge and understanding of MPs in sea ice remain sparse. This study investigated the abundance, composition, size (>30 micro m), and shape of MPs in four sea-ice cores retrieved at the southern end of the Sea of Okhotsk. Nine microplastic (MP) types, mostly with fragmentary shapes, were detected among ice-core sections. Most fragmentary MPs were smaller than 120 micro m, but all fiber MPs were in the largest size class (>210 micro m). MP concentrations were 0–60 particles/L, with an average of 21 particles/L. Higher occurrences of MPs observed in the lower ice layers are attributable to heavier MP contamination in the southern part of the sea and/or relocation of MPs in the ice matrix. No significant correlation was found between the distributions of MP and inorganic particle (sediment) abundances, implying difference in their kinetics of suspension freezing. Taken together, these findings suggest important implications for elucidating the nature and distribution of MPs in sea ice.

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Section: Discussionsupporting

confidence: 73%

Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%