Seasonal variation and risk assessment of microplastics in surface water of the Manas River Basin, China

Wang, Gaoliang; Lu, Jianjiang; Li, Wanjie; Ning, Jianying; Zhou, Li; Tong, Yanbin; Liu, Zilong; Zhou, Honggeng; Xiayihazi, Nuerguli

doi:10.1016/j.ecoenv.2020.111477

Cited by 153 publications

(43 citation statements)

References 51 publications

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“…Therefore, the dominance of blue colors confirmed a high proportion of blue-colored plastic gear. Additionally, the variety of color of microplastics could be related to a wide range of sources [56] and faced by environmental factors during the transmission process, turning the corresponding polymer itself a color [57]. The color diversity to some extent of paticles are likely to be influenced by shape of microplastics.…”

Section: Resultsmentioning

confidence: 99%

Microplastic Contamination in Blood Cockles and Mussels in Bandon Bay, Suratthani Province, Thailand

et al. 2022

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Widespread microplastic contamination has been of growing concern worldwide and poses a growing threat to the marine environment, particularly the impact on the food chain. This study quantified the presence of microplastics in two bivalves of commercial interest at the Pak Kadae Estuary, Bandon Bay, Surat Thani province, Thailand: green mussel Perna viridis (L.) and cockles Tegillarca granosa (L.). Data collection was carried out over two seasons: dry season (April - May 2019) and wet season (June - August 2019). Microplastics were extracted using a 10 % potassium hydroxide (KOH) digestion method and then identified under a microscope. Results confirmed the presence of microplastics in both cockles and green mussels, during the dry season, with mean concentrations of 0.30±0.07 and 1.26±0.10 items/individual, respectively. During the wet season, the mean microplastic concentrations were 0.20±0.07 and 0.56±0.15 items/individual in the cockles and green mussels, respectively. There was a greater concentration of microplastics found in green mussels compared to cockles (P < 0.05) with no seasonal variation being observed. Five different shapes of microplastics, including fiber, fragment, pellet, rod, and film, were detected in the soft tissues of the bivalves. Fibers were the most common shape in green mussels (49 - 69 %) during both seasons. Cockles, in contrast, predominantly contained the pellet shape in the dry season (49 %) and fiber in the wet season (59 %). In addition, the microplastic concentrations were positively correlated to shell heights of the bivalves (P < 0.01). The number of microplastics recorded in the two commercially exploited species demonstrated the need for controlling plastic pollution in coastal ecosystems. HIGHLIGHTS Green mussels showed higher contamination with microplastics than blood cockles An average (Mean±SD) of 0.28±0.05 to 2.14±0.36 items/individual in cockles and 0.65±0.13 to 3.43±0.21 items /individual in mussels were obtained Microplastic fibers were the dominant shape found in shellfish Blue microplastics was the most frequently found in green mussels whereas the black color dominated in cockles GRAPHICAL ABSTRACT

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Section: Resultsmentioning

confidence: 99%

Microplastic Contamination in Blood Cockles and Mussels in Bandon Bay, Suratthani Province, Thailand

et al. 2022

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“…Because high-risk microplastic pollution was found in the Shandong and Jiangsu Province, we should pay more attention to their river estuaries. Besides, the results of MPs from s the manas river in the junggar basin, Xinjiang were not optimistic (21±3-49±3 items/L) (Wang et al, 2021;Wang et al, 2020). A study had also investigated Ulansuhai Lake in Inner Mongolia, and its MP concentration was 1760±710-10,120±4090 items/m 3 (Wang et al, 2019).…”

Section: Data Mining Of the Distribution Of Mps In Chinamentioning

confidence: 99%

Data Mining Revealing Recent Microplastics Pollution of Freshwater in China

Xie¹,

Pei²

2022

American Journal of Environmental Sciences

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This review mainly discusses the characteristics and correlation of microplastics (MPs) in freshwater systems under various geographical environments in China. The distribution and source of MPs are analyzed and their spatial analyses are performed using the GIS method. Besides, the current and future situation of microplastic pollution in China is further evaluated through data mining. Results indicate that recent studies mainly focused on the middle and lower reaches of the yangtze river and its tributaries, as well as lakes and reservoirs along the yangtze river. Notably, large-scale reservoirs, rivers, and lakes located in densely populated areas showed higher abundances of MPs. Taken together, the current MP's pollution of freshwater in China was not optimistic. Novel technologies should be developed to remove existing microplastics and new laws and regulations should be promulgated to reduce plastic waste pollution.

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“…Thiel and Gutow [ 97 ] found that microorganisms such as bacteria can quickly attach onto the surface of microplastics and move to the microplastics which are generally more durable and firm than others. The other biological effect is an alterable physical property due to the ubiquitous presence of biofilms as coatings which occupy the surface of microplastics and they are usually observed to completely encapsulate the microplastics [ 98 ]. No doubt, further study is required to systematically and comprehensively analyze the potential hazardous effects of microplastics in the water systems [ 99 ].…”

Section: Effects and Potential Risks Of Microplastics In Inland Water Systemsmentioning

confidence: 99%

A Review of the Migration and Transformation of Microplastics in Inland Water Systems

Cai

Zhao

2021

IJERPH

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Plastic productions continue to grow, and improper management of plastic wastes has raised increasing concerns. This reflects the need to explore the microplastics in water bodies. Microplastics have been regarded as emerging pollutants in water systems. In recent years, large numbers of studies across the world were conducted to investigate the distribution, behavior and the integrated impacts of microplastics in both the marine environment and the freshwater environment. Compared with the marine environment, the migration and transformation of microplastics in inland water systems seem more informative as they may reach the marine environment as one of their final destinations. Based on the updated literature, this review aims at overviewing the migration and transformation processes/behavior of microplastics in rivers, lakes and reservoirs. As for the migration, the microplastics’ fate is from manufacturing, consuming, discarding to migrating and returning to the human society which could form a closed though complicated circle. For transformation, microplastics experience five stages of their fate in inland water systems. These include changing into suspending pieces; ending up deposited as the sediment; resuspending under various changing conditions; ending up via burying into the soil as the part of the riverbed; reaching the marine environment; and being ingested by organisms and also becoming entangled with aquatic plants, etc. It is highly expected that this review can provide a valuable reference for better understanding microplastics’ migration and transformation mechanisms and a guide for the future study of microplastics in an inland water environment.

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Seasonal variation and risk assessment of microplastics in surface water of the Manas River Basin, China

Cited by 153 publications

References 51 publications

Microplastic Contamination in Blood Cockles and Mussels in Bandon Bay, Suratthani Province, Thailand

Microplastic Contamination in Blood Cockles and Mussels in Bandon Bay, Suratthani Province, Thailand

Data Mining Revealing Recent Microplastics Pollution of Freshwater in China

A Review of the Migration and Transformation of Microplastics in Inland Water Systems

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