气候变化领域集成服务门户(CCPortal): Contamination of the Caspian Sea Southern coast sediments with microplastics: A marine environmental problem

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DOI	10.1016/j.marpolbul.2020.111620
	Contamination of the Caspian Sea Southern coast sediments with microplastics: A marine environmental problem
	Ghayebzadeh M.; Aslani H.; Taghipour H.; Mousavi S.
发表日期	2020
ISSN	0025326X
卷号	160
英文摘要	Marine ecosystem pollution with microplastics (MPs) is a global problem. The current study aimed to assess the occurrence of MPs in the sediments of the Caspian Sea southern coasts. For sampling, two distinct areas were selected including recreational-tourism areas (No = 24), and non-tourist areas (No = 24). MPs were studied in 5 and 5-15 cm from the top sediment surface. All 96 samples were taken and analyzed according to the methodology provided by the US national oceanic and atmospheric administration (NOAA). The combination of observational techniques, FTIR, and SEM analysis was applied to identify MPs. MPs were classified into two categories in terms of size: small MPs and large MPs. The average, maximum, and minimum abundance of MPs (based on dry weight) in sediments of the southern coast of the Caspian Sea was 183.5 ± 154.4 MP/kg, 542 MP/kg, and 13 MP/kg, respectively. On the basis of morphology, fragment-shaped (30.3%) MPs showed the highest prevalence, while film-shaped (18.7%) MPs were the least contributory. Polyethylene (PE) and polyethylene terephthalate (PET), each of them with a 20% share, were the most common MPs found in the studied samples. The distribution of MPs on the southern coasts of the Caspian Sea revealed a sporadic and irregular spatial pattern. Correspondingly, it can be concluded that probably environmental factors (the current of the sea surface water from west to east), enclosed environment of the Caspian Sea, anthropogenic activities (e.g., industrialization and urbanization, improper waste management, fishing, and tourism activity, residential wastewater), and also discharging of rivers (which can carry plastics) into the sea, have all influenced the abundance and polymer diversity of MPs in the sediments of the southern coast of the sea. More attention should be paid to the health and environmental effects of MPs and to the protection of this sensitive marine ecosystem through implementing proper waste management system by all surrounding littoral countries. © 2020 Elsevier Ltd
英文关键词	Caspian Sea; Distribution; FTIR; Sediment; SEM; The microplastic
语种	英语
scopus关键词	Aliphatic compounds; Coastal engineering; Ecosystems; Environmental management; Microplastic; Morphology; Plastic bottles; River pollution; Sediments; Surface waters; Tourism; Waste management; Anthropogenic activity; Environmental factors; Environmental problems; National Oceanic and Atmospheric Administration; Polyethylene terephthalates (PET); Residential wastewaters; Tourism activities; Waste management systems; Marine pollution; coastal sediment; environmental effect; environmental factor; FTIR spectroscopy; human activity; marine ecosystem; marine environment; marine pollution; plastic waste; polymer; river discharge; scanning electron microscopy; Caspian Sea
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148492
作者单位	Department of Environmental Health Engineering, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran; Health and Environment Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Statistics and Epidemiology, Tabriz University of Medical Sciences, Tabriz, Iran
推荐引用方式 GB/T 7714	Ghayebzadeh M.,Aslani H.,Taghipour H.,et al. Contamination of the Caspian Sea Southern coast sediments with microplastics: A marine environmental problem[J],2020,160.
APA	Ghayebzadeh M.,Aslani H.,Taghipour H.,&Mousavi S..(2020).Contamination of the Caspian Sea Southern coast sediments with microplastics: A marine environmental problem.Marine Pollution Bulletin,160.
MLA	Ghayebzadeh M.,et al."Contamination of the Caspian Sea Southern coast sediments with microplastics: A marine environmental problem".Marine Pollution Bulletin 160(2020).