We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Identification and distribution of microplastics in the sediments and surface waters of Anzali Wetland in the Southwest Caspian Sea, Northern Iran
AI summary Read the abstract
Researchers documented the occurrence, abundance, and distribution of microplastics in sediments and surface waters of Anzali coastal wetland on the southwest Caspian Sea, finding concentrations between 140-2,820 items/kg dry weight in sediments and up to 4.41 items/m3 in surface water. Fibers were the most common shape and concentrations were higher in the dry season, with the wetland serving as a significant microplastic sink.
The occurrence, abundance and distribution of microplastics (MPs) were studied in sediments and surface waters of the Anzali coastal wetland, southwest of the Caspian Sea. Sediment and surface water samples were taken at 11 and 6 stations in June 2018 and January 2019 respectively. The abundances of MPs in sediment samples were 140-2820 and 113-3690 items/kg dry weight while in surface waters were 0.40-4.41 and 0.19-2.85 items/m in June and January respectively. Fiber was the most common shape, followed by fragment and film. Red, black and blue were the most frequent colors. Particles 1-2 mm were the dominant size. SEM/EDS and ATR-FTIR analyses were used to identify MPs. Polypropylene, polyethylene and polyester were the most frequently found polymers. Our results highlighted the widespread dispersion of MPs in Anzali Wetland which in turn might be a pathway of MPs pollution transporter to the adjacent and connected Caspian Sea.
More Papers Like This
Microplastic particles in sediments and waters, south of Caspian Sea: Frequency, distribution, characteristics, and chemical composition
AI summary Read the abstract
Researchers assessed microplastic occurrence in coastal sediments and surface waters along the southern Caspian Sea coast in Iran, finding mean concentrations of 15 items/kg in sediments and 710 items/m3 in coastal water. Fibers dominated at 97% of all MPs in both media and were predominantly black-colored, with smaller particles more prevalent in water than sediments.
Microplastics in surface sediments of a highly urbanized wetland
AI summary Read the abstract
Researchers found microplastic contamination throughout the sediments of Anzali Wetland in Iran, with levels highest near a heavily urbanized river outlet and areas of intense tourism and fishing, and fibers comprising 80% of all detected particles.
Characteristics and Seasonal Distribution of Microplastics in the Surface Waters of Southwest Coast of the Caspian Sea (Guilan Province, Iran)
AI summary Read the abstract
Researchers measured microplastic concentrations in surface waters along the southwest coast of the Caspian Sea in Iran across four seasons, finding an average of over 1,000 microplastic particles per cubic meter. Concentrations varied by season and location, with fibers being the most common type found.
Microplastics in different tissues of some commercially important fish species from Anzali Wetland in the Southwest Caspian Sea, Northern Iran
AI summary Read the abstract
Microplastics were detected in the gastrointestinal tract, muscle, and gonads of nine commercially important fish species from Anzali Wetland in the Caspian Sea, with fiber being the most common type and occurrence varying by species and tissue.
Microplastics in Sediments of Southwest Caspian Sea: Characteristics, Distribution and Seasonal Variability
AI summary Read the abstract
This study monitored microplastic contamination in Caspian Sea sediments across four seasons, finding plastic particles present at all times and locations with an average of nearly 400 particles per kilogram of sediment. Seasonal variation in microplastic abundance was detected, likely linked to wind and current patterns that affect particle transport and deposition.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.