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Seasonal and Spatial Distribution of Microplastics in the Can Tho River (Mekong Delta, Vietnam): Occurrence and Characteristics
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Scientists found tiny plastic particles (microplastics) at every single testing site along Vietnam's Can Tho River, in both dry and wet seasons—showing this pollution is widespread and constant, not a one-time event. Since this river is a water source in a densely populated delta region, these findings matter because they suggest people living nearby may be regularly exposed to microplastics through their water supply, though this study didn't directly test health effects. The research gives scientists a baseline to track pollution trends and push for better waste management to reduce plastic contamination in drinking water sources.
Microplastic pollution in tropical urban rivers has become an increasing environmental concern due to rapid urbanization, inadequate waste management, and hydrological transport processes. This study investigated the occurrence, characteristics, and spatiotemporal distribution of microplastics in the Can Tho River, Vietnam, along an urban–peri-urban–rural gradient during dry and wet seasons. Surface-water samples were collected at 15 sites and analyzed for microplastic abundance, density, shape, color, and size composition using stereomicroscopic identification and statistical analyses. Microplastics were detected at all sampling sites in both seasons, indicating widespread contamination throughout the river system. Although seasonal differences in overall abundance and density were not statistically significant at the basin scale, clear spatial variability was observed, particularly in urban and peri-urban regions. Fibers and fragments were the dominant shapes, while blue, purple, and green particles were the most common color categories. Particles larger than 1000 µm accounted for the largest proportion of detected microplastics, and continuous size-distribution analysis revealed broadly similar overall distributions, although a greater proportion of smaller particles was observed during the dry season. The results suggest that hydrological conditions, urbanization, and land-use characteristics may contribute to the observed spatial and seasonal patterns of microplastic distribution in the Can Tho River. Peri-urban zones exhibited the greatest seasonal variability, highlighting their role as transitional areas that may influence microplastic redistribution in tropical river systems. This study provides baseline information for understanding microplastic pollution in the Mekong Delta and supports future river management strategies.
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Spatial Patterns, Composition, and Size Characteristics of Riverbank and Floating Macroplastic Debris in the Can Tho River, Mekong Delta, Vietnam
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Researchers studying a river in Vietnam's Mekong Delta found that plastic waste, mostly bags, food packaging, and foam containers, piles up on riverbanks and floats downstream in different size patterns, with smaller plastic bits more likely to keep traveling toward the ocean. This matters because as this trash breaks down, it becomes microplastics that can enter drinking water, seafood, and ultimately our bodies, so understanding how plastic moves through rivers helps communities figure out where to intervene before it reaches the sea.
Sedimentary microplastics in the river-to-ocean continuum in Southeast Asia: spatial distribution, particle characteristics, and ecological risk
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Scientists tested river sediment near major Vietnamese cities (Hanoi, Ho Chi Minh City, Can Tho) and found tiny plastic fragments, many smaller than a grain of sand, in high concentrations, especially near urban areas and where rivers meet the ocean. These plastics were often made from common but potentially hazardous materials like PVC and PET, and since these rivers feed into the food chain and drinking water systems people rely on, this pollution could eventually make its way into what we eat and drink. The findings highlight the need for better plastic waste management across Southeast Asia as the region's plastic use continues
Distribution and Characteristics of Microplastics in Nhue - Day River Basin, Vietnam
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Researchers investigated the distribution and characteristics of microplastics in the Nhue-Day River Basin in Vietnam, finding that microplastic abundance varies with seasonal changes and anthropogenic activities, posing threats to the ecosystem and the roughly 12 million people who depend on this river.
Preliminary study of microplastics in a tropical river impacted by a megacity (Saigon River, Ho Chi Minh City, Vietnam)
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Scientists checked the Saigon River, which flows through a major Vietnamese city, and found tiny plastic particles called microplastics throughout the water. This matters because rivers like this are sources of drinking water and food (like fish), meaning these plastic bits could end up on our plates, and we're still learning what that means for our health. This early study is a wake-up call for more research and better waste management in fast-growing cities worldwide.
Distribution of microplastics in surface water from Saigon River to Can Gio Sea
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Researchers found widespread microplastic contamination in surface water samples from the Saigon River and Can Gio Sea in Vietnam, with concentrations and particle types shifting from river to coastal environments, reflecting the transport of land-based plastic pollution into marine systems.
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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.