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Contamination of microplastic in bivalve: first evaluation in Vietnam
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For the first time in Vietnam, microplastics were detected inside green mussels (Perna viridis), with fibers and fragments being the most common types. Given that mussels are widely eaten in Vietnam, this raises concerns about microplastic exposure through seafood.
Microplastics (MP) are omnipresent in ecosystems. Some studies focus on MP fates and their toxicology on biota for the last ten years in the world. In the present study, MP was identified in bivalve (Perna Viridis) collected in Vietnam for the first time using micro-Fourier transform infrared Microspectroscopy (µFTIR) technique. Organisms were digested by KOH 10% solution then separated using KI 50% solution. The average concentration evaluated at 2.60 MP/individual and 0.29 MP/gram of wet tissue. Six types of MP were found with a high proportion of polypropylene (PP) (31%) and polyester (23%). MP characterizations were also observed which bring to much important information such as the source of MP contamination in bivalve from Vietnam. Nevertheless, more work needs to be invested in the future such as on different species or environment compartments which permit to the global view of MP contamination in Vietnam.
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Researchers tested green mussels from four coastal areas in Quang Ninh province, Vietnam, finding microplastics in 91.7% of samples, mostly tiny fragments under 150 micrometers. The most common plastic type found was PET, making up 67.9% of all particles detected.
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Researchers measured microplastic contamination in green mussels, seawater, and beach sediment along the northern coast of Vietnam. Mussels contained an average of about 25 microplastic pieces per individual, while beach sediments had concentrations around 4,800 pieces per kilogram. PET was the most common polymer type, and the study shows that Vietnamese coastal waters and seafood carry meaningful levels of microplastic contamination.
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Microplastics were found in Asian green mussels collected from coastal waters in Southeast Asia, with fiber types dominant, confirming that this widely consumed bivalve accumulates plastic particles. The study raises food safety concerns given the high consumption of this mussel species across the region.
Microplastic contamination in filter-feeding bivalves inhabiting the natural ecosystem of Da Nang Bay: An investigation of oysters (Ostrea rivularis) and green mussels (Perna viridis)
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Researchers found microplastics in 100% of examined oysters and green mussels from Da Nang Bay, Vietnam, with average densities of 3.5 items per gram of tissue, exceeding average contamination levels seen in seafood across Asia. Mussels showed considerably higher MP accumulation than oysters, with black plastic particles under 0.5 mm in fibrous form being the dominant type found.
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Researchers conducted a preliminary determination of microplastics in four bivalve species from Phu Yen, central Vietnam, detecting MPs in clams, ark clams, oysters, and green mussels commonly consumed by local populations.
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