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Scientific studies on microplastics pollution in Iran: An in-depth review of the published articles
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This review synthesized published data on microplastic pollution across Iran's ecosystems, finding that 70% of studies focused on the Persian Gulf and Oman Sea with minimal coverage of terrestrial environments, and documenting the presence of microplastics in commercial salt and bottled mineral water consumed by the Iranian population.
This literature review was conducted to collect present data on microplastics pollution in Iran's ecosystems. Most of the studies performed in aquatic environment were conducted in Persian Gulf & Oman Sea (70%). The Persian Gulf, along with the beaches of Bushehr and Hormozgan Provinces, are the most studied areas. Moreover, most of the studies were conducted in aquatic environments and only four studies were conducted in terrestrial environment (4/42). One study has assessed microplastics in commercial salt and another study has reported the microplastics presence in Iranian bottled mineral water brands. The investigation of microplastics associated with biota was highlighted, customarily for fish species. Microplastics were also present in urban wastewater samples in Sari and Bandar Abbas cities. Three studies were performed in freshwater ecosystems until now (Haraz River, Anzali wetland, and Taleqan dam). The need for further studies in this field still exists, especially in terrestrial and freshwater compartments.
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Microplastics contamination in popular soft drinks and non-alcoholic beverages marketed in Iran: Quantity and characteristics
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Researchers found microplastics in 80–90% of popular soft drinks and non-alcoholic beverages sold in Iran, detecting an average of about 22 particles per liter, with plastic fragments from PET and polyethylene packaging as the dominant types. These findings highlight that plastic beverage containers are a likely source of human microplastic ingestion and call for tighter industry monitoring.
Exploring the microplastic pollution: Unveiling origins and varieties in coastal sediments and waters of the Bushehr Province, Persian Gulf, Iran
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Researchers conducted a comprehensive survey of microplastic pollution in coastal sediments and waters along the Persian Gulf in Iran. They found microplastics at all sampling sites, with the highest concentrations near petrochemical facilities and urban centers, and fibers being the most common type. The study establishes baseline pollution data for the region and links contamination levels to specific human activities.
Spatial Heterogeneity of Microplastic Contamination in Coastal Surface Waters: A Case Study of 21 Stations in the Southern Caspian Sea, Iran.
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Researchers tested coastal seawater at 21 sites along Iran's southern Caspian Sea coast and found microplastics at every location, with levels dropping farther from shore. Mazandaran province, near heavy tourism and urban areas, had the highest contamination, and most particles were fibers made of polyethylene or polypropylene, materials common in packaging and fishing gear.
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.
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.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.