Extent and risks of microplastic pollution in the Yangtze River. State of the science

Wang, Siting; Mintenig, Svenja M.; Cheng, Cheng; Wu, Jing; Koelmans, Albert A.

doi:10.1016/j.scitotenv.2023.168538

Cited by 5 publications

(2 citation statements)

References 39 publications

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“…While the initial intention of the power law was to reveal possible sources and sinks within measured size fractions, researchers have begun to apply the model to predict abundances of unmeasured size fractions. Such predictions have been used to rescale field and toxicology studies to the same microplastics size ranges for risk assessment and inter-ecosystem comparisons. ,, Kooi and Koelmans applied the power law model of analysis to 19 studies that varied in sampling locations and determined an average exponent value of 1.6 while a larger study that included marine and freshwater surface waters and sediments found that the exponent value for these combined samples was 2.68 . The variation in the exponential values in these different studies as a function of the number of samples included suggests that the assumptions made during fitting data may influence the model and, thus, our ability to predict abundances of smaller particles.…”

Section: Introductionmentioning

confidence: 99%

Size Distributions of Microplastics in the St Louis Estuary and Western Lake Superior

Thomas,

Marchand,

Schwoerer

et al. 2024

Environ. Sci. Technol.

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Identifying the sources and fate of microplastics in natural systems has garnered a great deal of attention because of their implications for ecosystem health. This work characterizes the size fraction, morphology, color, and polymer composition of microplastics in western Lake Superior and its adjacent harbor sampled in August and September 2021. The results reveal that the overall microplastic counts are similar, with the harbor stations ranging from 0.62 to 3.32 microplastics per liter and the lake stations ranged from 0.83 to 1.4 microplastics per liter. However, meaningful differences between the sample locations can be seen in the size fraction trends and polymer composition. Namely, the harbor samples had relatively larger amounts of the largest size fraction and more diversity of polymer types, which can be attributed to the urbanized activity and shorter water residence time. Power law size distribution modeling reveals deviations that help in the understanding of potential sources and removal mechanisms, although it significantly underpredicts microplastic counts for smaller-sized particles (5−45 μm), as determined by comparison with concurrently collected microplastic samples enumerated by Nile Red staining and flow cytometry.

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Section: Introductionmentioning

confidence: 99%

Size Distributions of Microplastics in the St Louis Estuary and Western Lake Superior

Thomas,

Marchand,

Schwoerer

et al. 2024

Environ. Sci. Technol.

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“…The concentration of microplastics in the surface water of the Yangtze River Basin varies from tens to tens of thousands/m 3 and continues to rise [ 23 , 25 ]. And the microplastic exposure data from the Yangtze River basin was among the highest reported for rivers and other aquatic systems worldwide, exceeding effect thresholds in some parts of the river [ 26 ]. Hence, the potential impact of microplastic pollution on C. guichenoti warrants more widespread attention.…”

Section: Introduction Testmentioning

confidence: 99%

Enzymatic Stress Responses of Coreius guichenoti to Microplastics with Different Particle Sizes

Wu,

Qiu,

Lin

et al. 2023

Toxics

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The wild population resources of Coreius guichenoti have sharply declined in recent decades, and any negative factors may have a significant impact on their survival. In this study, the enzymatic stress responses of C. guichenoti to 25 and 48 μm polyethylene fragments were explored for the first time. This was achieved by evaluating the changes in physiological and biochemical indicators of the species in response to the environmental stimuli of microplastics. In this study, we observed an early stress response in the external tissues of C. guichenoti following exposure to microplastics. The TP content in skin and muscle and the MDA content in skin, gill and muscle initially showed a significant increase. The skin, gill, and muscle exhibited greater stress responses to M5 particles, whereas M3 particles caused a greater response in the intestine and especially the liver. After the removal of microplastic exposure, the stress state of the C. guichenoti would be alleviated in a short period, but it could not fully recover to the pre-exposure level. In summary, microplastics pose a significant threat to C. guichenoti. While their negative effects can be alleviated by the removal of microplastics exposure, full recovery does not occur in a short period. Continuous monitoring of microplastics in natural waters and targeted aquatic ecological restoration are essential to ensure the normal growth and reproduction of the wild population of C. guichenoti.

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Assessing the nonlinear relationship between consumer goods and water pollution in different seasons with machine learning models: A case study in the Yangtze River Economic Belt

Huan,

Liu

2024

Journal of Cleaner Production

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Extent and risks of microplastic pollution in the Yangtze River. State of the science

Cited by 5 publications

References 39 publications

Size Distributions of Microplastics in the St Louis Estuary and Western Lake Superior

Size Distributions of Microplastics in the St Louis Estuary and Western Lake Superior

Enzymatic Stress Responses of Coreius guichenoti to Microplastics with Different Particle Sizes

Assessing the nonlinear relationship between consumer goods and water pollution in different seasons with machine learning models: A case study in the Yangtze River Economic Belt

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