Determination of microplastics in the edible green-lipped mussel Perna viridis using an automated mapping technique of Raman microspectroscopy

Leung, Matthew Ming-Lok; Ho, Yuen-Wa; Maboloc, Elizaldy A.; Lee, Cheng-Hao; Wang, Youji; Hu, Menghong; Cheung, Siu Gin; Fang, James Kar–Hei

doi:10.1016/j.jhazmat.2021.126541

Cited by 38 publications

(17 citation statements)

References 73 publications

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“…Converting from the proportions in this study, the soft tissue intake of clams obtained was 5,777.99 g/person/year, resulting in a calculated amount of 13,289.38 items/person/ year of MPs entering the human body through clam consumption per capita in the coastal areas of the SYS. Compared to the exposure levels of MPs brought by consumption of molluscs in other regions, this study has similar levels with 11,970 items/person/year in Italy (Mytilus galloprovincialis) (Cho et al, 2019), 11,000 items/person/year in France (M. edulis and Crassostrea gigas) (Wang et al, 2018) (Leung et al, 2021), which is higher than India's 397.79 items/ person/year (P.viridis and Meretrix meretrix) (Dowarah et al, 2020) and Iran's 4,800 items/person/year (5 species of molluscs) (Naji et al, 2018). It can be seen that the annual per capita intake of MPs through the consumption of clams by the coastal population from the coastal areas of the SYS is at a relatively high level worldwide.…”

Section: The Risk Of Microplastics In Commercial Clamssupporting

confidence: 72%

“…Seafood is an important source of protein intake for coastal populations, and clams, as commercially important organisms, are at high risk of MPs contamination (Leung et al, 2021). In order to reduce the risk of human exposure to MPs through the consumption of clams, we investigated the self-purification of MPs by clams and preliminarily explored the pattern of MPs changes between different organs in clams.…”

Section: Removal Of Mps In Clamsmentioning

confidence: 99%

“…P. R. China, 2020), among which the most common shellfish were clams. Furthermore, as low-trophic level species, clams have the risk of MPs accumulating in the body and entering the human body through consumption, especially the coastal population (Leung et al, 2021). Currently, there is no relevant report on the per capita intake of clams from the coastal areas of the SYS.…”

Section: Introductionmentioning

confidence: 99%

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Microplastics in commercial clams from the intertidal zone of the South Yellow Sea, China

Tang¹,

Zhang²,

Song³

et al. 2022

Front. Mar. Sci.

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Clams are commercially important species and are a vital component of the offshore ecosystem. Investigations on microplastics (MPs) in clams have attracted public attention recently, for its ecological and food safety risks. However, knowledge gaps still exist regarding MPs in commercial clams from the intertidal zone of the South Yellow Sea (SYS), China, an important clam habitat. In this study, to investigate the distribution of MPs in clams of the SYS, four species of clams were collected from nine sites in different tide zones (high, middle, and low tides) in three coastal areas (Nantong, Yancheng and Lianyungang). The abundance and characteristics of MPs, including size, shape, color and composition, were determined using microscope and micro-Fourier transform infrared (FTIR) spectroscopy. Furthermore, to evaluate the MPs purification ability of clams, the abundance of MPs in various tissues was examined by microscopic observation after being purified in filtered seawater for 72 h. The results showed that there were significant differences in the abundance of MPs in clams from different regions, with the most serious pollution in the high-tide zone. Moreover, the lowest MPs abundance was found in Yancheng (5.07 ± 2.73 items/individual, 1.16 ± 0.78 items/g), while Lianyungang was found with the most abundant MPs (7.52 ± 2.68 items/individual, 3.94 ± 3.00 items/g). The size of MPs in Ruditapes philippinarum (1,329.99 μm) was significantly higher than in other species. The MPs in clams were characterized by fiber in shape, black-grey, blue-green and white-transparent in color and rayon in composition. Moreover, it was found that the MPs originally present in various tissues tended to migrate and accumulate into the mantle of the clam during depuration, and after 72 h of depuration, removing the mantle could reduce nearly half amount of microplastics in clams. Overall, our study revealed the microplastic distribution in commercial clams from the intertidal zone of the SYS and provided suggestions for the safety of aquatic production.

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Section: The Risk Of Microplastics In Commercial Clamssupporting

confidence: 72%

Section: Removal Of Mps In Clamsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Microplastics in commercial clams from the intertidal zone of the South Yellow Sea, China

Tang¹,

Zhang²,

Song³

et al. 2022

Front. Mar. Sci.

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“…MP were carefully sealed in tin capsules, and their net mass was recorded by a precision balance to 0.01 mg (Sartorius Secura 225D-1S, Germany). A total of 244 particles (13.69 mg, >250 μm) from different habitats were randomly selected and identified by a Renishaw inVia confocal Ramen microscope (Wotton-under Edge, UK) equipped with a Leica 10× objective (Wetzlar, Germany) and a 785 nm edge laser (300 mW output power) on a 250 μm stainless-steel filter …”

Section: Methodsmentioning

confidence: 99%

Contribution of Microplastics to Carbon Storage in Coastal Wetland Sediments

Chen

Lee

2021

Environ. Sci. Technol. Lett.

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The ubiquitous occurrence of microplastics in coastal habitats is widely reported. As an anthropogenic material with high carbon content, the contribution of microplastics to the coastal sediment carbon stock is still unassessed. Here, we report the occurrence pattern of microplastics (20–2000 μm) and estimate their contribution to the carbon stock in different coastal sediments in Hong Kong, a metropolis in the Pearl River estuary and part of the Greater Bay Area with a population of 70 million. Our data reveal that microplastics are more concentrated in the surface sediment and in vegetated coastal sediments. We also estimate that at present carbon from microplastics contributes between 0.001% and 1.197% to the sediment carbon pool at different depths. Despite the low contribution, microplastics have already made a hidden contribution to the coastal sediment carbon stock. Our data help to establish a baseline for future contributions of microplastics to total carbon storage in peri-urban coastal sediments.

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“…For instance, it has been estimated that up to 2.4 million tonnes of plastic waste is annually discharged into the ocean through various human activities [ 2 ]. These plastic pieces can be fragmented into smaller sizes, and when smaller than 5 mm, they are commonly referred to as microplastics, which can be found nowadays almost everywhere and in a wide range of food items such as fish, shellfish and table salt, as well as drinking water (e.g., [ 3 , 4 , 5 ]). Microplastics have also been detected in human faeces collected from different populations in Asia, Europe and America, suggesting human ingestion of microplastics and their presence in the gastrointestinal tract [ 6 , 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Preliminary Findings of the High Quantity of Microplastics in Faeces of Hong Kong Residents

Lim

Yeoh

et al. 2022

Toxics

Self Cite

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Microplastics are recognised as a ubiquitous and hazardous pollutant worldwide. These small-sized particles have been detected in human faeces collected from a number of cities, providing evidence of human ingestion of microplastics and their presence in the gastrointestinal tract. Here, using Raman spectroscopy, we identified an average of 50 particles g−1 (20.4–138.9 particles g−1 wet weight) in faeces collected from a healthy cohort in Hong Kong. This quantity was about five times higher than the values reported in other places in Asia and Europe. Polystyrene was the most abundant polymer type found in the faeces, followed by polypropylene and polyethylene. These particles were primarily fragments, but about two-thirds of the detected polyethylene terephthalate were fibres. More than 88% of the microplastics were smaller than 300 µm in size. Our study provides the first data on the faecal level, and thus the extent of ingestion, of microplastics in Hong Kong’s population. This timely assessment is crucial and supports the recently estimated ingestion rate of microplastics by Hong Kong residents through seafood consumption, which is one of the highest worldwide. These findings may be applicable to other coastal populations in South China with similar eating habits.

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Determination of microplastics in the edible green-lipped mussel Perna viridis using an automated mapping technique of Raman microspectroscopy

Cited by 38 publications

References 73 publications

Microplastics in commercial clams from the intertidal zone of the South Yellow Sea, China

Microplastics in commercial clams from the intertidal zone of the South Yellow Sea, China

Contribution of Microplastics to Carbon Storage in Coastal Wetland Sediments

Preliminary Findings of the High Quantity of Microplastics in Faeces of Hong Kong Residents

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