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

The Science of The Total Environment 2020 88 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Ruilong Li Ruilong Li Beibei Liu, Beibei Liu, Shuaipeng Zhang, Ruilong Li Beibei Liu, Ruilong Li Shuaipeng Zhang, Ruilong Li Ruilong Li Ruilong Li Beibei Liu, Beibei Liu, Beibei Liu, Ruilong Li Ruilong Li Beibei Liu, Yucui Sun, Beibei Liu, Shuaipeng Zhang, Shuaipeng Zhang, Shuaipeng Zhang, Yucui Sun, Shuaipeng Zhang, Shuaipeng Zhang, Shuaipeng Zhang, Ruilong Li Ruilong Li Beibei Liu, Beibei Liu, Beibei Liu, Ruilong Li Beibei Liu, Beibei Liu, Ruilong Li Ruilong Li Ruilong Li Ruilong Li Beibei Liu, Beibei Liu, Beibei Liu, Ruilong Li Beibei Liu, Beibei Liu, Ruilong Li Ruilong Li Ruilong Li Beibei Liu, Beibei Liu, Ruilong Li Ruilong Li Beibei Liu, Ruilong Li Ruilong Li Ruilong Li Ruilong Li Ruilong Li Ruilong Li Ruilong Li Ruilong Li Ruilong Li

Summary

Researchers combined Raman Tweezers (for particles 1-20 µm) and conventional Raman spectroscopy (for 20-5000 µm) to characterise the full size spectrum of microplastics in crab and fish from the Beibu Gulf mangrove wetland in China. They found that small microplastics (1-20 µm) comprised 35.77% of total particle counts, and that excluding this size fraction introduces large underestimates of total microplastic burden in marine organisms.

Polymers

PE PET

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 μm. The abundance of small MPs (1-20 μm) 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 μm) 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 μm) 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 μm, 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 μm, facilitating study of the migration and transformation of small MPs in the environment.

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