Microplastics in the atmosphere of Ahvaz City, Iran  

作　　者：Sajjad Abbasi Neamatollah Jaafarzadeh Amir Zahedi Maryam Ravanbakhsh Somayeh Abbaszadeh Andrew Turner 

机构地区：[1]Department of Earth Sciences,College of Science,Shiraz University,Shiraz 71454,Iran [2]Department of Radiochemistry and Environmental Chemistry,Faculty of Chemistry,Maria Curie-Skłodowska University,Lublin 20-031,Poland [3]Environmental Technologies Research Center,Ahvaz Jundishapur University of Medical Sciences,Ahvaz,Iran [4]Department of Environmental Health Engineering,Shoushtar Faculty of Medical Sciences,Shoushtar,Iran [5]Student Research Committee,Ahvaz Jundishapur University of Medical Sciences,Ahvaz,Iran [6]School of Geography,Earth and Environmental Sciences,Plymouth University,PL48AA,UK

出　　处：《Journal of Environmental Sciences》2023年第4期95-102,共8页环境科学学报（英文版）

摘　　要：Airborne particulate matter(PM) with an aerodynamic size cutoff of 10 μm(PM_(10)) has been collected using a high volume air sampler at two locations(urban and residential) in the city of Ahvaz, Iran, for sixteen 24-hour periods over four months(late summer to early winter).Microplastics(MPs) in the PM were isolated after sample digestion and were subsequently characterised by established techniques. All MPs sampled(n = 322) were of a fibrous nature,with polyethylene terephthalate, nylon and polypropylene being the dominant polymers and consistent with textiles and fabrics as the principal source. Despite a distinct seasonality(temperature and wind) over the study period, the abundance, size and colour of the fibres exhibited no clear temporal trend, and no clear differences were observed between the two sites. Concentrations of MPs ranged from none detected to about 0.017/m^(3)(median = 0.0065/m^(3)) and are at the low end of ranges reported in the recent literature for various urban and remote locations. While some MPs may have a local origin, the weathering of other MPs and their acquisition of extraneous geosolids and salts suggests that long-range transport is also important. Back-trajectory calculations indicate that regional sources are mainly to the north and west of Ahvaz, but a southerly, maritime source is also possible in late autumn. Although concentrations of MPs in the atmosphere are well below those encountered in indoor air, further studies are required to elucidate their potential ecological impacts.

关 键 词：Microplastics ATMOSPHERE TRANSPORT Fibres POLYMERS Ahvaz 

分 类 号：X51[环境科学与工程—环境工程]