Microplastics in sediments from urban and suburban rivers: Influence of sediment properties.

Autor: Duong TT; Institute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Viet Nam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Viet Nam. Electronic address: duongthuy0712@gmail.com., Nguyen-Thuy D; University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai Street, Thanh Xuan, Hanoi, Viet Nam., Phuong NN; PhuTho College of Medicine and Pharmacy, 2201 Hung Vuong Boulevard, Viet Tri City, Phu Tho Province, Viet Nam; GERS-LEE Université Gustave Eiffel, IFSTTAR, F44344 Bouguenais, France., Ngo HM; University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam., Doan TO; Faculty of Environment, Hanoi University of Natural Resources and Environment, No 41A, Phu Dien Street, Bac Tu Liem, Hanoi, Viet Nam., Le TPQ; Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Viet Nam., Bui HM; Faculty of Environment, Saigon University, 273 An Duong Vuong St., District 5, Ho Chi Minh City, Viet Nam., Nguyen-Van H; University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai Street, Thanh Xuan, Hanoi, Viet Nam., Nguyen-Dinh T; University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai Street, Thanh Xuan, Hanoi, Viet Nam., Nguyen TAN; Institute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Viet Nam., Cao TTN; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Viet Nam; Institute of Human Geography - Vietnam Academy of Social Sciences, 1 Lieu Giai Street Ba Dinh District, Hanoi, Viet Nam., Pham TMH; Institute of Mechanics, Vietnam Academy of Science and Technology, 264 Doi Can, Ba Dinh, Hanoi, Viet Nam., Hoang TT; Hanoi University of Science and Technology, No 1 Dai Co Viet Street, Hanoi, Viet Nam; School of Chemistry and Life Science, Hanoi University of Science and Technology, No 1 Dai Co Viet Street, Hanoi, Viet Nam., Gasperi J; GERS-LEE Université Gustave Eiffel, IFSTTAR, F44344 Bouguenais, France., Strady E; Aix-Marseille Univ., Toulon University, CNRS, IRD, MIO, UM 110, Marseille, France.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2023 Dec 15; Vol. 904, pp. 166330. Date of Electronic Publication: 2023 Aug 15.
DOI: 10.1016/j.scitotenv.2023.166330
Abstrakt: Although sediments are considered to be a major sink for microplastics (MP), there is still a relative lack of knowledge on the factors that influence the occurrence and abundance of MP in riverine sediments. The present study investigated the occurrence and distribution of MP in riverine sediments collected at twelve sites representative of different populated and urbanized rivers (To Lich, Nhue and Day Rivers) located in the Red River Delta (RRD, Vietnam, during dry and rainy seasons. MP concentrations ranged from 1600 items kg -1 dw to 94,300 items kg -1 dw. Fiber shape dominated and MP were made of polypropylene (PP) and polyethylene (PE) predominantly. An absence of seasonal effect was observed for both fragments and fibers for each rivers. Decreasing MP concentrations trend was evidenced from the To Lich River, to the Nhue River and to the Day River, coupled with a decreasing fiber length and an increasing fragment area in the surface sediment from upstream to downstream. Content of organic matter was correlated to MP concentrations suggesting that, high levels of organic matter could be MP hotspots in urban rivers. Also, high population density as well as in highly residential areas are related to higher MP concentrations in sediments. Finally, a MP high ecological risk (RI: 866 to 4711) was calculated in the RDD.
Competing Interests: 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.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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