Full size microplastics in crab and fish collected from the mangrove wetland of Beibu Gulf: Evidences from Raman Tweezers (1-20 mu m) and spectroscopy (20-5000 mu m)

文献类型： 外文期刊

第一作者： Zhang, Shuaipeng

作者： Zhang, Shuaipeng;Li, Ruilong;Zhang, Shuaipeng;Li, Ruilong;Sun, Yucui;Liu, Beibei

作者机构：

关键词： Microplastics; Mangrove wetland; Raman Tweezers; Characteristics

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

ISSN： 0048-9697

年卷期： 2021 年 759 卷

页码：

收录情况： SCI

摘要： Microplastic pollution in organisms is a growing environmental concern worldwide. Current methods to identify microplastics (MPs) are subject to the limitations of analytical techniques, and there is no full-scale method to measure MPs in organisms. In this study, Raman Tweezers and spectroscopy methods were combined and applied to identify MPs in organisms within the size range of 1-5000 mu m. The abundance of small MPs (1-20 mu m) was measured in crab (0.39-2.83 items/individual) and fish (0.35-3.22 items/individual). Most MPs were transparent in color and pellet shape. The proportion of small MPs (1-20 mu m) was 35.77%, and analysis revealed the non-inclusion of this fraction will induce large deviations in the overall measurement. The large MPs (20-5000 mu m) were identified in crab and fish with abundances ranging from 0.74-4.96 items/individual and 0.72-5.39 items/individual, respectively. Mainly fiber shape items were detected, the dominant particle size ranged from 20 to 100 mu m, and most MPs were white. Polyethylene (PE) and polyethylene terephthalate (PET) were the main types of MPs polymers detected. Our study fills the gap to provide a new method to detect MPs in organisms below 20 mu m, facilitating study of the migration and transformation of small MPs in the environment. (C) 2020 Elsevier B.V. All rights reserved.

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