Abstract
Microplastics are pollutants with uncertain behaviors; they have mysterious impacts on marine environments. The present study is the first investigation of microplastic distribution in the surface water of the inner Gulf of Thailand. This study collected 100–200 L of surface water from 25 different sampling locations. Microplastics were visually counted and identified by Fourier-transform infrared microscopy. The results revealed that the average total abundance of microplastics (125–5000 µm) was 9.97 pieces/L (1.55 ng/L). Microplastics sized 125–300 µm were most abundant at all the sampling sites, accounting for 68% of the total microplastics. Fiber (35%) and fragment (34%) were the predominant microplastic shapes in the surface water. Polyethylene, polypropylene, and poly(ethylene propylene) accounted for the most prevalent polymer types. The present findings revealed that the inner Gulf of Thailand is moderately polluted by microplastics of different sizes, shapes, and types, which may pose a potential risk to coastal ecosystems.
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Acknowledgements
The authors acknowledge the research team at the Department of Marine Science, Faculty of Fishery, Kasetsart University, for the sample collection.
Funding
The present study was funded by Chulalongkorn University CU_GR_63_04_23_02 and the Ratchadapisek Sompoch Endowment Fund (2020) under Microplastic and Plastic Waste Cluster, Chulalongkorn University. In addition, this work was supported by the 100th Anniversary Chulalongkorn University Doctoral Scholarship; the 90th Anniversary of Chulalongkorn University Fund (Ratchadaphiseksomphot Endowment Fund); and the Department of Environmental Science, Faculty of Science, Chulalongkorn University.
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Vibhatabandhu, P., Srithongouthai, S. Abundance and Characteristics of Microplastics Contaminating the Surface Water of the Inner Gulf of Thailand. Water Air Soil Pollut 233, 50 (2022). https://doi.org/10.1007/s11270-022-05531-x
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DOI: https://doi.org/10.1007/s11270-022-05531-x