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Analysis of Microplastics Abundance in Selorejo Reservoir Sediment at Malang Regency
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This study analyzed the abundance, type, size, color, and distribution of microplastics in sediments of Selorejo Reservoir in Malang Regency, Indonesia. Fragment-type microplastics (42%) in the 125–250 µm size range (48%) and black color (46%) were dominant, with an overall average abundance of 56,637.5 particles per kilogram of sediment. The highest concentrations were found at the reservoir outlet, and FTIR analysis was used to identify polymer compositions.
Plastic waste is a problem that has the potential to pollute the environment and can be asource of problems for waters. Microplastics that enter the waters will enter the water body and will eventually settle in the sediment. This study aims to determine the abundance based on the type, size, color and number of microplastics, to determine the comparison of the abundance of microplastics in sediments at each station and to determine the abundance of microplastics based on the pollutant source, to make a distribution map of the presence of microplastics in the Selorejo Reservoir and to analyze the abundance of microplastics based on pollutant sources in the area. Selorejo Reservoir. The results of the study revealed that in the Selorejo Reservoir sediment the most dominant type of microplastic was fragment (42%), based on color it was black (46%), and based on size was microplastic with a size of 125-250 m (48%). Overall the abundance of microplastics in the Selorejo Reservoir is 56637.5 particles/kg sediment where the abundance is high on grid 8 where the grid is the outlet of the Selorejo Reservoir. The results of the Fourier Transform Infrared (FTIR) analysis on sediment samples showed several polymers, namely polyethylene (PE), polystyrene (PS), polyprophylene (PP), and polyamide (PA) ornylon.
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Microplastic as a pollution in Babura River Medan: A study Case
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Researchers characterized microplastic abundance and composition in the water and sediments of the Babura River in Medan, Indonesia, collecting samples from three sites in July 2020. Using microscopy and FTIR analysis, they identified polypropylene, polystyrene, and polyethylene in fragment, film, and fiber forms, with sediment abundances ranging from 15 to 39 particles per 100g and water concentrations from 68 to 132 particles per liter.
Microplastic Contamination in Waters and Sediments in the Selorejo Reservoir, Malang Regency, East Java
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This study measured microplastic contamination in water and sediment samples from the Selorejo Reservoir in East Java, Indonesia, finding widespread contamination across all sampling sites. The reservoir serves as a water source for surrounding communities, raising concerns about human exposure through drinking water.
Analysis of Microplastic Contamination on Water and Sediment in the Brantas Subwatershed of the Malang Area
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This Indonesian study (published in Bahasa Indonesia) analyzed microplastic contamination in both water and sediment of the Brantas River sub-watershed in the Malang area, one of the most important river systems in East Java. Microplastics were found in both water and sediment samples across sampling locations, with fibers being a dominant form. The Brantas River supports millions of people for drinking water and irrigation, making evidence of microplastic contamination in this system a significant public health and environmental concern.
Microplastic Contamination in Water and Sediment at Maninjau Lake, Indonesia
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Researchers quantified microplastic contamination in surface water and sediment across 10 locations in Maninjau Lake, Indonesia, finding abundances ranging from 65.63 to 195.31 particles/m3 in water and 199.52 to 7,000 particles/kg dry weight in sediment. Fiber, film, fragment, and granule shapes were identified, highlighting contamination risks to a lake critical for water supply, hydroelectric energy, and aquaculture.
Identification of Microplastics in Water and Fish in the Brantas River, Malang City
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This study identified microplastics in both water and fish tissues in the Brantas River in Malang City, Indonesia, with FTIR analysis confirming multiple polymer types, establishing baseline contamination data for this densely populated watershed. The presence of microplastics in fish is a direct human health concern given that river fish are a common protein source for local communities.
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