Spatial and temporal distribution of microplastics in water and sediments of a freshwater system (Antuã River, Portugal).

By Mariana Rodrigues, N. Abrantes, Fernando Gonçalves, Helena I. S. Nogueira, João Carlos Marques, Ana M. M. Gonçalves. Science of the Total Environment, 2018

678 citations recorded by the source corpus.

Microplastics (particles with a size<5mm), one of the most emerging aquatic pollutants, are of particular concern since they can reach high densities and interact with biotic and abiotic environment. The occurrence of microplastics in freshwater systems is less understood than in marine environment. Hence, the present study aims to provide new insights into microplastics abundances and distribution in Antuã River (Portugal) by applying the isolation method of wet peroxide oxidation with addition of zinc chloride to water and sediment samples collected in March and October 2016, in three sampling sites. The abundance of microplastics in water ranged from 5 to 8.3mgm-3 or 58-193itemsm-3 in March and from 5.8-51.7mgm-3 or 71-1265itemsm-3 in October. In sediments, the abundance ranged from 13.5-52.7mgkg-1 or 100-629itemskg-1 in March and from 2.6-71.4mgkg-1 or 18-514itemskg-1 in October. The water and sediment samples with the greatest abundances were from São João da Madeira and Aguincheira, respectively. Spatio-temporal distribution showed different pattern according to methodological approaches, seasonal and hydrodynamic conditions and the proximity to urban/industry areas. Analysis of plastics by Fourier transform infrared spectroscopy underline polyethylene and polypropylene as the most common polymer types identified in this work. The low medium high oxidation ratio was 56:22:22 (%) in March and 61:31:8 (%) in October. Foams and fibers were the most abundant type in São João da Madeira, while fibers and fragments were the most abundant in Aguincheira and Estarreja in water and sediment samples, respectively. This study emphasizes the importance of rivers as carriage systems of microplastics. Further studies should be performed to identify point sources in order to mitigate the microplastics contamination in aquatic systems.

Subfields: Industrial and Manufacturing Engineering, Pollution

View Paper: https://www.semanticscholar.org/paper/4e22c1866ef73edab343d9f003adbafe84e2aba9

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Industrial and Manufacturing Engineering

  1. A. Pozzi
  2. G. Binda
  3. Silvia Galafassi
  4. Roberta Bettinetti
  5. A. Bellasi
  6. P. Volta

In Pollution

  1. A. Pozzi
  2. G. Binda
  3. Silvia Galafassi
  4. Roberta Bettinetti
  5. A. Bellasi
  6. P. Volta

Citations in the corpus