Imperial College London
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ProfessorFrankKelly

Faculty of Medicine, School of Public Health

Battcock Chair in Community Health and Policy
 
 
 
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Contact

 

+44 (0)20 7594 8098 ext 48098frank.kelly Website

 
 
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Location

 

Sir Michael Uren HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Vayghan:2022:10.1016/j.scitotenv.2022.156894,
author = {Vayghan, AH and Rasta, M and Zakeri, M and Kelly, FJ},
doi = {10.1016/j.scitotenv.2022.156894},
journal = {Science of the Total Environment},
title = {Spatial distribution of microplastics pollution in sediments and surface waters of the Aras River and reservoir: an international river in Northwestern Iran},
url = {http://dx.doi.org/10.1016/j.scitotenv.2022.156894},
volume = {843},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Microplastics (MPs) in freshwater environments have been recognized as one of the important sources of plastic contamination in marine ecosystems. Reducing the amount and spatial distribution of MPs reaching the sea through accumulation behind dams remains unclear. In this study we analyzed the spatial distribution of sediment and surface water MPs in the Aras Dam and from nineteen upstream and downstream locations of the Dam in the Aras River. The MPs abundance ranged from 32 to 528 items/kg dry weight (mean 217.8 ± 132.6) and 1 to 43 items/m3 (mean 12.8 ± 10.5) in the sediment and surface water stations, respectively. MPs abundance in surface waters collected within the Dam reservoir was significantly higher than those found either upstream or downstream (P < 0.05). For sediments, reservoir MPs concentration was generally higher than upstream and downstream, although their differences were not significant. High MPs concentration was observed in the vicinity of urban areas. Moreover, MPs abundance was positively correlated with total organic carbon (TOC) and clay content (P < 0.01). GAM analysis revealed that clay is the most important variable with lowest Akaike information criterion (AIC) and explained 61.3 % of deviance (R-sq.(adj) = 0.344) in MPs abundance. MP particles ranged from 0.1 to 5 mm in size and were dominated by fibers (53.5 %), black color (24 %) and PE polymer (36.6 %). Our results highlight the high MPs distribution in the Aras River and demonstrate that they accumulate in the surface waters behind the Dam. Consequently, the fate and effects of MPs in international rivers is one of the most politicized issues between countries with a common boundary and therefore needs joint management policies that help mitigate this insidious problem.
AU  - Vayghan,AH
AU  - Rasta,M
AU  - Zakeri,M
AU  - Kelly,FJ
DO  - 10.1016/j.scitotenv.2022.156894
PY  - 2022///
SN  - 0048-9697
TI  - Spatial distribution of microplastics pollution in sediments and surface waters of the Aras River and reservoir: an international river in Northwestern Iran
T2  - Science of the Total Environment
UR  - http://dx.doi.org/10.1016/j.scitotenv.2022.156894
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000869059200003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR  - https://www.sciencedirect.com/science/article/pii/S0048969722039912
UR  - http://hdl.handle.net/10044/1/110131
VL  - 843
ER  -
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