Figure 1
Download
View publication
Optical microscope image of typical micro-plastic particles with different shapes

Optical microscope image of typical micro-plastic particles with different shapes

Source publication
Figure 1. Optical microscope image of typical micro-plastic particles...
Figure 2. For different seasons: A. Number of micro-plastic per 100g of...
FTIR imaging results of micro-plastic samples in each season
Year-Round Behavior of Micro-plastics in Coastline Sand
Article
Full-text available
  • Jul 2021
This article aims to identify the behavior of light and heavy micro-plastics on the southern shore of the Caspian Sea during different seasons of the year. For this purpose, data from 15 sampling stations were gathered in four seasons, and subjected to various analyses after the samples were prepared. To separate light and heavy micro-plastics, the...
Cite
Download full-text

Context in source publication

Context 1
... quanta 250 scanning electron microscope was used to study the number of micro-plastics in the soil. Figure 1 shows examples of microscopic images obtained. The observed micro-plastic parts are in the form of fragments, fibers, foams and films. ...

Citations

... Scientific literature has recently started an investigation on MPs in the Caspian Sea, the largest enclosed aquatic ecosystem (Mataji et al., 2020). Research detected contamination of water, sediments (Nematollahi et al., 2020;Rasta et al., 2020;Mehdinia et al., 2020;Seyfi et al., 2021), and biota (Bagheri et al., 2020;Nematollahi et al., 2021;Rasta et al., 2021) in Southern Caspian Sea. Reports of contamination of sediments describe meaning contamination of sediments of 210 items kg −1 , 183.5 items kg −1 , or 103.15 items kg −1 (Mataji et al., 2020;Ghayebzadeh et al., 2021;Mehdinia et al., 2020). ...
Microplastic contamination in the sediments of Qarasu estuary in Gorgan Bay, south-east of Caspian Sea, Iran
Article
  • May 2022
  • SCI TOTAL ENVIRON
Given the important ecological role of estuaries and implications of microplastics (MPs) in ecosystems, we assessed the occurrence, abundance, size, and polymer types of MPs present in the sediments of the Qarasu estuary in 2019. MPs were extracted from sediments by density separation, after which they were detected under a stereomicroscope and considered according to shape, size and color. Identification was implemented using Fourier-Transform Infrared Spectroscopy (FT-IR). The abundance and size of MPs in the samples ranged between 40 and 460 particles/kg and 200–5000 μm, respectively. The dominant shape of MPs was fiber (72%), followed by fragment (26%) and film (2%). Black and white were the most abundant colors with 48% and 29%, respectively. In total, 4 MPs polymers including polypropylene (33%), polyethylene (24%), polyamide (21%), and polystyrene (14%) were identified. Results from PCA showed that stations with a high abundance of microplastics had a significant correlation with the amount of clay.
View