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Microplastics in Saccostrea commercialis oysters and surrounding water habitats in Rayong, Thailand: Pollution status and risk assessment
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This study examined microplastic contamination in oysters (Saccostrea commercialis) and coastal water in Rayong, Thailand, identifying the dominant polymer types and assessing potential human health risks from seafood consumption in this brackish water habitat.
Microplastic contamination in aquatic ecosystems has emerged as a pressing environmental issue, sparking widespread concern about its potential effects on marine life, ecosystem, and human well-being. This study examined microplastic contamination in oysters ( Saccostrea commercialis ) and the surrounding coastal environment (water) within the brackish area of La Won Canal, Rayong Province, Thailand. Additionally, it evaluated potential health risks associated with the polymer components using the Polymer Hazard Index (PHI). The average concentration of microplastics was determined to be 4.39 ± 2.34 particles/g (wet weight) in oysters and 1.53 ± 0.27 particles/L in water. Fibers were identified as the predominant shape, with most particles measuring less than 250 μm in size. Both oysters and water samples contained four types of polymers: polypropylene (PP), polyethylene (PE), chlorinated polyethylene (CPE), and the copolymer poly(ethylene-co-acrylic acid) (PEAA), along with non-polymer cellophane. Among these, PP was the most abundant, constituting 40% of the microplastics found in oysters. The PHI analysis classified the polymer components of microplastics in oysters as belonging to hazard category IV. This indicates that microplastic contamination in bivalves could present a potential health risk to humans through the consumption of seafood.
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Microplastic Abundance in Blood Cockles and Shrimps from Fishery Market, Songkhla Province, Southern Thailand
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Microplastics were detected in blood cockles and shrimps purchased from a fishery market in Songkhla Province, southern Thailand, with contamination levels and polymer types characterized in commercially important seafood that represents a route of microplastic ingestion for local consumers.
Microplastics in retail shellfish from a seafood market in eastern Thailand: Occurrence and risks to human food safety
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Researchers tested three popular types of shellfish sold at a Thai seafood market and found microplastics in all of them, with polystyrene and polyethylene being the most common plastic types. They estimated that Thai consumers could ingest up to about 1,178 microplastic particles per year just from shellfish. The health risk assessment rated the contamination at moderate to high concern levels.
Microplastics in commercial bivalves from coastal areas of Thailand and health risk associated with microplastics in ingested bivalves
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Researchers measured microplastic contamination in four species of commercial shellfish from Thailand's coastline and assessed the health risk to consumers. Microplastics were found in 69-93% of the shellfish sampled, with fibers being the most common type. Based on local consumption patterns, the study estimated that regular shellfish eaters in Thailand could be ingesting significant amounts of microplastics, though the health risk was deemed low to moderate at current levels.
Microplastic Contamination in Blood Cockles and Mussels in Bandon Bay, Suratthani Province, Thailand
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Researchers quantified microplastic contamination in blood cockles and mussels from Bandon Bay, Thailand, finding widespread plastic particles in these commercially important bivalves and raising concerns about microplastic transfer through the seafood supply chain.
The Contamination of Microplastics in Mussel (Mytilus edulis), and Oyster (Crassostrea gigas): A Case Study from a Fish Market, Chonburi Province
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Microplastics were found in mussels and oysters sold at a fish market in Thailand, with fibers and fragments being the most common types. Since bivalves are often eaten whole, this raises concerns about human ingestion of microplastics through seafood.
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