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Quantification for the Flow of Microplastic Particles in Urban Environment: A Case of the Chao Phraya River, Bangkok Thailand : A Minor Field Study
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This minor field study quantifies the flow of microplastic particles in the urban environment of Bangkok, focusing on the Chao Phraya River as a pathway for plastic transport to the ocean.
Plastic, including microplastic, is a common product in the society today and is starting to be more common in oceans where it can stay for a long time. Microplastic is defined usually in the size ...
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Microplastics Contamination in a High Population Density Area of the Chao Phraya River, Bangkok
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This study measured microplastic concentrations in surface water and sediment from a densely populated stretch of the Chao Phraya River in Bangkok, finding particles at all sites with higher levels in sediment than in water. Bangkok's high population density and inadequate plastic waste management are major contributors to microplastic contamination in this major urban river.
Distribution and flux assessment of microplastic debris in the middle and lower Chao Phraya River, Thailand
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Researchers measured microplastic concentrations throughout Thailand's largest river, the Chao Phraya, finding plastic particles at every sampling station across all seasons, with sediment concentrations up to 546 particles per kilogram dry weight. Fiber was the most common form, and contamination peaked during monsoon season when rainfall flushes more plastic into the river. The study estimates the river's flux of microplastics toward the Gulf of Thailand, providing a baseline for understanding how major Asian rivers transport land-based plastic pollution to the ocean.
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Researchers collected microplastics from five sites along the Chao Phraya River in Bangkok using a Manta net and identified polymers via FTIR, finding average concentrations of 21 particles/m3 with polypropylene dominant and highest counts at midstream urban sites, indicating that single-use plastic packaging degradation is a primary source of riverine microplastic pollution in this urban corridor.
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Researchers systematically measured microplastics in the lower Chao Phraya River, Thailand, during the COVID-19 pandemic period across spatial and temporal gradients. Average MP abundance was 8.3 ± 5.8 particles/m, dominated by PE and PP fibers and fragments, with higher concentrations downstream in urbanized areas and slight seasonal elevation in wet season runoff.
Occurrence and spatial distribution of microplastic contaminated with heavy metals in a tropical river: Effect of land use and population density
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Researchers studied microplastic pollution in Thailand's Chao Phraya River and found that population density and land use strongly influence contamination levels. Urban areas had the highest microplastic concentrations, and many particles were contaminated with heavy metals. The findings suggest that microplastics in rivers can serve as carriers of toxic metals, compounding the pollution risk for downstream communities.
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