Microplastic pollution in marine sediments of the Antarctic coastal environment of Potter Cove and nearby areas (25 de Mayo/King George Island, South Shetlands)

IF 5.3 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin Pub Date : 2024-11-14 DOI:10.1016/j.marpolbul.2024.117236

J.C. Antacli , G.N. Rimondino , R. Di Mauro , G. Alurralde , N. Servetto , M.D. Garcia , G.A. González , S. Morales , R. Sahade , C. Vodopivez , I.R. Schloss

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Abstract

Plastic contamination in the Southern Ocean is a growing issue. This study provides the first comprehensive analysis of marine microplastics (MPs) (0.1–5 mm) in surface sediments in Potter Cove and nearby areas around Argentina's Carlini station (25 de Mayo/King George Island, South Shetlands). Sediment samples from 31 sites (2020−2022) were collected to examine whether MP pollution originates from station activities or ocean currents. All samples contained MPs, averaging 0.18 ± 0.12 MPs/g of sediment, mainly microfibers (MFs) and irregular microfragments (MFRs) (0.11–6.23 mm) and irregular microfragments (MFRs) (0.09–4.57 mm). Infrared spectroscopy identified 13 polymer types, including cellulosic materials, polyester, and polyamide, with most MPs < 1 mm, showing aging signs, similar to laundry wear. This widespread distribution suggests contamination may stem from both local activities and external sources. Findings underscore the urgent need for MP pollution management and further research to identify sources and develop effective mitigation strategies.

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波特湾及附近地区（南设德兰岛，25 de Mayo/King George 岛）南极沿海环境海洋沉积物中的微塑料污染。

南大洋的塑料污染问题日益严重。本研究首次全面分析了波特湾和阿根廷卡利尼站（南设德兰群岛，五月二十五日/乔治王岛）附近海域表层沉积物中的海洋微塑料（0.1-5 毫米）。收集了 31 个站点（2020-2022 年）的沉积物样本，以研究 MP 污染是源于站点活动还是洋流。所有样本都含有 MPs，平均为 0.18 ± 0.12 MPs/克沉积物，主要是微纤维（MFs）和不规则微碎片（MFRs）（0.11-6.23 毫米）以及不规则微碎片（MFRs）（0.09-4.57 毫米）。红外光谱鉴定出 13 种聚合物类型，包括纤维素材料、聚酯和聚酰胺，其中大多数 MPs

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来源期刊

Marine pollution bulletin 环境科学-海洋与淡水生物学

CiteScore

10.20

自引率

15.50%

发文量

1077

审稿时长

68 days

期刊介绍： Marine Pollution Bulletin is concerned with the rational use of maritime and marine resources in estuaries, the seas and oceans, as well as with documenting marine pollution and introducing new forms of measurement and analysis. A wide range of topics are discussed as news, comment, reviews and research reports, not only on effluent disposal and pollution control, but also on the management, economic aspects and protection of the marine environment in general.