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Microplastic Abundance, Distribution, and Composition in Sungai Dungun, Terengganu, Malaysia
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This study investigated microplastic occurrence in Sungai Dungun river in Malaysia, characterizing the particles by morphology, color, and polymer type. The detection of microplastics at all sampling sites in this Malaysian river confirms that freshwater contamination with plastic particles is widespread across Southeast Asia.
In this study, MPs occurrence in Sungai Dungun, Terengganu, Peninsular Malaysia was analysed. Sampling method was based on sieving 200 m of bulk water to collect surface water samples from five sites in the vicinity of potential source for MP abundance. Characterisation of MPs was accomplished by gravimetric and digital image processing (for quantification and morphology categorisation), and chemical composition identified by attenuated total reflectance-Fourier infrared spectroscopy. The range concentration of MPs was 22.8 to 300.8 items/m 3 (mean 102.8 item/m 3 ). It was recorded that most of the MPs found were black and transparent. The most frequent morphotypes were fibres, followed by fragments. Polypropylene (C 3 H 6 )n, polyacrylonitrile (C 3 H 3 N)n and rayon were the dominant polymertypes of MPs analysed in this work. Metals (Pb < As < Mn < Zn < Cu < Fe < Al) found within the MPs reported varied in terms of g/mL. This study provided new insights into the understanding of MP levels in inland Malaysian freshwater environments.
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Researchers surveyed microplastic pollution in rivers across Southeast Asia, a region with high plastic waste discharge but limited monitoring data, documenting the distribution and characteristics of microplastics in these understudied waterways.
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Researchers investigated microplastic occurrence in water and riverbed sediments of the Kemena and Niah Rivers in Sarawak, Malaysia, finding that urbanization along these rivers correlates with higher microplastic concentrations in freshwater environments.
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Researchers surveyed two rivers in northern Malaysia — Pinang River and Kerian River — to establish a baseline understanding of microplastic pollution in a region where such data were largely absent. They found microplastics in both rivers, with Kerian River showing higher concentrations; fragment-shaped particles dominated, and polycarbonate and nylon were identified as the main polymer types. This kind of baseline data is essential for tracking how pollution changes over time and for guiding cleanup or regulatory efforts in the region.
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