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Assessing the relationship between the abundance of microplastics in sediments, surface waters, and fish in the Iran southern shores
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Researchers found microplastic contamination across sediments, surface waters, and four fish species along Iran's Persian Gulf coast, with concentrations of 190 items/kg in sediments and 9.28 items/km in surface waters, though no correlation was observed between MP abundance across the different environmental compartments.
The purpose of this study was to investigate the microplastic (MP) pollution in sediments, surface waters, and four fish species in the northern coast of the Persian Gulf. Sampling was conducted in seven important regions during December 2019. The abundance of MPs was respectively 190 ± 35.5 items/kg dry weight for sediments, 9.28 ± 2.1 items/km for surface waters, and 0.33 ± 0.05 items/individual for fish. There was no correlation between MP abundance in surface water, sediment, and fish samples. Except for Cynoglossus arel, abundance of isolated MPs did not show significant relationships with body weight, body length, and gastrointestinal tract weight (P > 0.05). MPs were ranged from 0.3 to 5 mm in size and were prevailed by fiber in shape; black, red, and blue in color; and polypropylene and polyethylene in polymer. This study may help in increasing our knowledge regarding MP pollution in marine water systems and biota.
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Contamination, Identification and Distribution of Microplastic in Sediments, Surface Seawater and Four Species of Fish on the Northern Shores of the Persian Gulf, south of Iran
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This study investigated microplastic contamination across sediments, surface waters, and organisms in a coastal or freshwater system. Researchers identified a range of polymer types and particle shapes, with results indicating widespread distribution throughout the sampled environment.
Occurrence and spatial distribution of microplastics in sediment and fish along the Persian Gulf—a case study: Bushehr Province, Iran
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Researchers investigated microplastic contamination in sediments and fish across 16 stations along the Bushehr Province coastline in the Persian Gulf, finding a mean abundance of 57.19 particles/kg in sediments — dominated by black fragments — and up to 9 microplastic particles per fish, with black particles again most prevalent.
Microplastic occurrence in selected aquatic species of the Persian Gulf: No evidence of trophic transfer or effect of diet
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Researchers examined microplastic contamination in six fish species, one mollusk, and three crustacean species from the Persian Gulf, finding no evidence of trophic transfer of microplastics or dietary effects on contamination levels across species.
Spatial Distribution of Microplastics in Persian Gulf Marine Environments
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Researchers examined the spatial distribution of microplastics in seawater, sediments, and fish (Pennahia anea) from eight locations across the Persian Gulf, analyzing 24 seawater samples, 24 sediment samples, and 40 fish specimens using stereo microscopy and Raman spectroscopy. The study maps MP contamination patterns across multiple environmental compartments in this semi-enclosed sea.
The occurrence of microplastic contamination in littoral sediments of the Persian Gulf, Iran
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Researchers surveyed littoral sediments of the Persian Gulf for microplastics, finding plastic particles across all sampling sites with a variety of polymer types. The study provides early baseline contamination data for a region with major petrochemical and industrial activity.
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