Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 749, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2020.141604
Keywords
Microplastics pollution; River sediment; Amazon
Categories
Funding
- Sao Paulo Research Foundation (FAPESP, Brazil) [2011/06609-1, 2014/23334-4, 2016/06271-4]
- National Council for Scientific and Technological Development (CNPq, Brazil) [302411/2018-6, 304727/2017-2, 304413/2018-6]
- Coordination of Superior Level Staff Improvement (CAPES, Brazil)
Ask authors/readers for more resources
We assessed the concentrations of microplastics in sediment samples collected in seven sites from Solimoes, Negro and Amazon rivers, upstream and downstream the metropolitan region of Manaus. Concentrations ranged from 417 to 8178 particles/kg of dried sediment (microplastics: 0.063-5 mm), and from 0 to 5725 particles/kg of dried sediment (microplastics: 0.063-1 mm). The highest microplastics concentrations were observed in samples from shallow water (water depth of 5-7 m) sites with lower water velocity of the Negro river surrounding Manaus, and the lowest concentration in farthest sample collected in deeper zone (water depth of 34 m) of the Amazon river around 110 km downstream Manaus. The variation of microplastics concentrations within the studied area can be related to hydraulic characteristics defining the erosive-depositional behavior of the sampling sites and their proximity to Manaus. Our results represent the first report to show the ubiquitous presence and widespread distribution of microplastics in sediments from the lower Solimoes, lower Negro and upper Amazon rivers. (C) 2020 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available