The Vertical Distribution of Microplastics in the Water Column of Lake Ladoga

The vertical distribution of microplastics in Lake Ladoga was studied under conditions of density stratification with the presence of a thermocline and under homothermal conditions. Using a pump filtration device, water samples were taken at different water layers (0–70 m) under different hydrologic...

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Bibliographic Details
Published in:Water resources 2024-04, Vol.51 (2), p.146-153
Main Authors: Tikhonova, D. A., Karetnikov, S. G., Ivanova, E. V., Shalunova, E. P.
Format: Article
Language:English
Subjects:
Analytical methods
Aquatic Pollution
Comparative analysis
Density stratification
Earth and Environmental Science
Earth Sciences
Hydrobiology: Environmental Aspects
Hydrochemistry
Hydrogeology
Hydrology/Water Resources
Lakes
Light microscopy
Microplastics
Optical microscopy
Raman spectroscopy
Spectroscopy
Surface boundary layer
Surface layers
Thermocline
Vertical distribution
Waste Water Technology
Water analysis
Water circulation
Water column
Water Management
Water Pollution Control
Water purification
Water sampling
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Summary:The vertical distribution of microplastics in Lake Ladoga was studied under conditions of density stratification with the presence of a thermocline and under homothermal conditions. Using a pump filtration device, water samples were taken at different water layers (0–70 m) under different hydrological conditions and a comparative analysis of the concentrations of microplastic particles with a size of 60–5000 μm was carried out. Microplastic particles were analyzed using both optical microscopy and Raman spectroscopy methods. Based on the obtained data, it was concluded that under conditions of density stratification, the concentrations of microplastic particles in the thermocline and above it are increased in comparison with the underlying layers (50 ± 40.2 and 15.9 ± 13 particles/m 3 , respectively). Under homothermal conditions, the vertical distribution of microplastics in the surface layer and in water column is more uniform (17.3 ± 17.8 and 12.7 ± 15.6 particles/m 3 , respectively).
ISSN:0097-8078
1608-344X
DOI:10.1134/S009780782370063X