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Microplastic pollution in sediments of tropical shallow lakes.
Silva-Cavalcanti, Jacqueline Santos; Silva, Jayne Crisleny Pereira; de Andrade, Flávio Montenegro; Brito, Andréa Monteiro Santana Silva; Costa, Monica Ferreira da.
Afiliação
  • Silva-Cavalcanti JS; Federal Rural University of Pernambuco, R. Dom Manuel de Medeiros, s/n, Recife 52171-900, Brazil. Electronic address: jacque_ss@hotmail.com.
  • Silva JCP; Federal Rural University of Pernambuco, R. Dom Manuel de Medeiros, s/n, Recife 52171-900, Brazil; Federal University of Pernambuco, Av. Arquitetura, s/n, Recife 50740-540, Brazil.
  • de Andrade FM; Federal University of Pernambuco, Av. Arquitetura, s/n, Recife 50740-540, Brazil.
  • Brito AMSS; Federal Rural University of Pernambuco, R. Dom Manuel de Medeiros, s/n, Recife 52171-900, Brazil.
  • Costa MFD; Federal University of Pernambuco, Av. Arquitetura, s/n, Recife 50740-540, Brazil.
Sci Total Environ ; 855: 158671, 2023 Jan 10.
Article em En | MEDLINE | ID: mdl-36099957
Forty-eight tropical shallow lakes (depth ≤ 4 m) across a climatic gradient were assessed for microplastic (MPs; <5 mm) pollution based on MPs concentrations in archive samples from lake shore sediments. The MPs were classified by type (fragments or fibres), colour (yellow, black, red, green, blue, white, and transparent), size (0.55 to 4.93 mm), and polymer (polyester, polyethylene, chlorinated polyethylene, and polyamide). Sediments were predominantly medium sand, and all samples (144) contained MPs, consisting of 24 % fragments (6.3 ± 11.3 MPs·300 g-1) and 76 % fibres (21.25 ± 12.7 MPs·300 g-1). The lake climate (humid, transitional, or semi-arid), type of surrounding land use (urban, semi-arid, or rural), and distance from the shoreline (0, 5 or 10 m) did not explain the differences in MPs concentrations, partially refuting the initial hypothesis. The only significant difference was between the sample medians for the number of fragments based on the region (H = 7.586; p = 0.0481). The number of fragments in the lakes in the humid region was greater than that in the semi-arid region (p < 0.05). Poor sanitation, sewage effluents, and solid wastes reaching and accumulating in the lakes may be the primary and transversal conditioning factors for this small difference among diverse environments. Freshwater lakes are investigated in all continents, and the present study contributes to the first record of MPs in shallow lake sediments in eastern South America. The 48 shallow lakes assessed showed a relatively low concentration of MPs compared to other lake contaminants reported in the international literature. This information coincides with public policies issued, regarding the control and reduction of plastics and MPs in Brazil, and the study region.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Microplásticos País/Região como assunto: America do sul / Brasil Idioma: En Revista: Sci Total Environ Ano de publicação: 2023 Tipo de documento: Article País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Microplásticos País/Região como assunto: America do sul / Brasil Idioma: En Revista: Sci Total Environ Ano de publicação: 2023 Tipo de documento: Article País de publicação: Holanda