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Microplastics in Beach Sediments of the Sea of Azov: Morphological and Morphometric Features
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Researchers sampled microplastics from beaches of the Sea of Azov, documenting their concentrations, shapes, sizes, and degradation stages. The study provides important baseline data on microplastic contamination in a semi-enclosed sea that is heavily influenced by river inputs and regional plastic waste.
This paper aims at assessment of microplastics concentrations on the beaches of the Sea of Azov and research of morphological features, size of particles, level and ways of degradation (or destruction) of microplastics. During the study, 126 samples of beach deposits were taken at 14 points of the beaches of the Sea of Azov and Kerch Strait. The samples were processed using the modified method NOAA. The analysis showed pollutant’s presence in 100 % of the samples. The concentration of microplastics particles in sand samples from different areas of the beach varies from 12 to 112 pieces per 1 m2 . The highest concentration was found on the beaches in Taganrog and the village of Ilyich. Morphological features of the particles were studied using a stereo microscope (Micromed MC-1 2C Digital). Translucent fibres and membranes prevailed in all the samples. Study of size frequency showed that the most frequently observed are particles of 0.2 mm, the median of size range being 0.5 mm. Types of microplastics degradation were determined using a scanning electron microscope (VEGA II LMU). Dissection, fracturing, and splitting were recorded
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