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Distribution and sources of microplastics in the Beibu Gulf using in-situ filtration technique
Summary
Researchers used in-situ filtration to characterize microplastic distribution in the Beibu Gulf, finding an average of 0.25 items per cubic meter dominated by fibers and cellulose, with land-based inputs from textiles, packaging, fisheries, and mariculture as dominant sources.
The Beibu Gulf is a vital link between China and the ASEAN nations, and microplastic contamination is rising due to fast growth, coastal life, fisheries, and mariculture. The abundance, distribution, and source analyses were conducted at 25 sample points for this study. According to this study, the average MPs was 0.25 ± 0.05 items/m, ranging from 0.01 items/m to 0.89 items/m. Fibers, white, cellulose, and 0.33-1 mm were abundant in shape, color, composition, and size, respectively. Multi-statistics-based source analysis indicated land-based inputs (packing materials, textile materials, fisheries, and mariculture) were dominant in the Beibu Gulf. In this study, we also acknowledged a comprehensive comparison and convenience between plankton pumps and other conventional designs to collect microplastic samples from water. We suggested that using a uniform design could elevate the data quality of microplastics.