PMID- 35331773 OWN - NLM STAT- MEDLINE DCOM- 20220526 LR - 20220526 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 830 DP - 2022 Jul 15 TI - Effect of land use on microplastic pollution in a major boundary waterway: The Arvand River. PG - 154728 LID - S0048-9697(22)01821-6 [pii] LID - 10.1016/j.scitotenv.2022.154728 [doi] AB - The occurrence of microplastics (MPs) was investigated in the Arvand River (Iran). The Arvand River (200 Km) is a major water body that flows through land with diverse use and it meets the Persian Gulf. This study constitutes the first assessment of MP pollution (prevalence and physico-chemical characteristics) in the Arvand river, both in the sediment and in the water. MP monitoring has been carried out in 24 stations located along the river. The MP pollution found ranged between 1 and 291 items.L(-1) and 70 to 15,620 items.kg(-1) (dw), in water and sediment, respectively. The majority of MPs were fibres, black/grey and yellow/orange in colour, and mainly 250-500 mum and >1000 mum in size. Polyethylene terephthalate (PET), polypropylene (PP), nylon (NYL), high-density polyethylene (HDPE), and polystyrene (PS) were found in sediment samples. All these polymers, except HDPE, were also identified in the water samples. PET and PP were dominant in the water samples; whereas PET and PS were the most abundant in the sediments. The vicinity of urban wastewater effluents could be behind MP pollution in both water and sediments. Significant differences (p < 0.05) of MP concentrations were affected by different land uses when comparing MP levels in undisturbed natural area with urban areas. A strong correlation between MP fibres and fragments found with PCA biplots revealed their similar distribution in water. In the sediment samples, fibre and fragment MP particles were significantly correlated with colloidal particles (e.g., clay and organic matter) suggesting a relevant role of colloidal particles in the aquatic ecosystem of the Arvand River in transporting MPs. This study contributes to the better understanding of the presence of MP in major rivers, which are systems that have been scarcely investigated for this type of pollution, and it can inform interventions to reduce MP inputs to the river and sea. CI - Crown Copyright (c) 2022. Published by Elsevier B.V. All rights reserved. FAU - Soltani, Naghmeh AU - Soltani N AD - Department of Earth Sciences, College of Science, Shiraz University, 71454 Shiraz, Iran. Electronic address: Naghmeh.soltani@shirazu.ac.ir. FAU - Keshavarzi, Behnam AU - Keshavarzi B AD - Department of Earth Sciences, College of Science, Shiraz University, 71454 Shiraz, Iran. Electronic address: BKeshavarzi@shirazu.ac.ir. FAU - Moore, Farid AU - Moore F AD - Department of Earth Sciences, College of Science, Shiraz University, 71454 Shiraz, Iran. FAU - Busquets, Rosa AU - Busquets R AD - School of Life Sciences, Pharmacy and Chemistry, Kingston University, Kingston Upon Thames, Surrey KT1 2EE, UK. FAU - Nematollahi, Mohammad Javad AU - Nematollahi MJ AD - Department of Earth Sciences, College of Science, Shiraz University, 71454 Shiraz, Iran. FAU - Javid, Reza AU - Javid R AD - Khorramshahr Environmental Protection Office, Khorramshahr 6491846783, Iran; Department of Marine Biology, Faculty of Marine Science and Oceanography, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran. FAU - Gobert, Sylvie AU - Gobert S AD - STAtion de REcherche Sous-Marineset Oceanographiques (STARESO), 20260 Calvi, France; Universite de Liege, Centre MARE, Laboratoire d'Oceanologie, Sart-Tilman, B6c, 4000 Liege, Belgium. LA - eng PT - Journal Article DEP - 20220322 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Microplastics) RN - 0 (Plastics) RN - 0 (Polypropylenes) RN - 0 (Polystyrenes) RN - 0 (Water Pollutants, Chemical) RN - 059QF0KO0R (Water) RN - 9002-88-4 (Polyethylene) SB - IM MH - Ecosystem MH - Environmental Monitoring MH - *Microplastics MH - Plastics MH - Polyethylene/analysis MH - Polypropylenes/analysis MH - Polystyrenes MH - Rivers MH - Water MH - *Water Pollutants, Chemical/analysis OTO - NOTNLM OT - Land use OT - Microfibre OT - River OT - Sediment OT - Surface water COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2022/03/26 06:00 MHDA- 2022/05/27 06:00 CRDT- 2022/03/25 05:34 PHST- 2021/12/29 00:00 [received] PHST- 2022/02/25 00:00 [revised] PHST- 2022/03/17 00:00 [accepted] PHST- 2022/03/26 06:00 [pubmed] PHST- 2022/05/27 06:00 [medline] PHST- 2022/03/25 05:34 [entrez] AID - S0048-9697(22)01821-6 [pii] AID - 10.1016/j.scitotenv.2022.154728 [doi] PST - ppublish SO - Sci Total Environ. 2022 Jul 15;830:154728. doi: 10.1016/j.scitotenv.2022.154728. Epub 2022 Mar 22.