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Assessment of Sediment Grain Size and Its Correlation with Microplastic Accumulation and Characteristics in the Kahayan River, Indonesia
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Researchers investigated microplastic accumulation in sediments of the Kahayan River in Indonesia in relation to sediment grain size, finding an average abundance of 7.3 items/kg dry weight. Significant correlations were found between coarse and fine sand grain sizes and microplastic occurrence, suggesting grain size plays a key role in microplastic retention.
The purpose of our research was to investigate the relationship between sediment grain size and the accumulation and characteristics of microplastics in the Kahayan River, Indonesia. The average abundance of microplastic in sediment was 7.3 ± 4.3 n/kg dry weight. The result showed a significant difference between predominant sediment grain size and microplastic occurrence in sediment. Moreover, sediment types of very coarse sand (1–2 mm), coarse sand (0.5–1 mm), and fine sand (0.1–0.2 mm) showed a significant and strong correlation with microplastic abundance. Predominant sediment grain size and microplastic shape (fragment, fiber) or size of >1000 µm also have a significant and strong correlation.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.