J 2025

Land-ocean export of microplastic in central Chile: The contribution of the Biobio River using a particle tracking model approach

RECABARREN, Tatiana; Mariett TORRES; Camila JACOBSEN; Katerine POZO; Lautaro GIRONES et al.

Základní údaje

Originální název

Land-ocean export of microplastic in central Chile: The contribution of the Biobio River using a particle tracking model approach

Autoři

RECABARREN, Tatiana; Mariett TORRES; Camila JACOBSEN; Katerine POZO; Lautaro GIRONES; Andres ARIAS; Roberto URRUTIA; Guozhu YE; Petra PŘIBYLOVÁ; Jana KLÁNOVÁ; Ramon AHUMADA a Karla Andrea POZO

Vydání

Environmental Pollution, Elsevier Science, 2025, 0269-7491

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10511 Environmental sciences

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 7.300 v roce 2024

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/25:00141579

Organizační jednotka

Přírodovědecká fakulta

EID Scopus

Klíčová slova anglicky

Plastic pollution; River tributaries; Synthetic fibers; OpenDrift; Particle trajectory; Chilean coast

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 15. 2. 2026 11:10, Mgr. Michaela Hylsová, Ph.D.

Anotace

V originále

Microplastic (MPs) pollution is a global concern that affects all environments. Rivers have been identified as a major transport route for MPs from land to oceans. In this context, we evaluated the MP contribution from the Biobío River, one of the most important rivers in Chile, to the ocean. MPs were collected from superficial water throughout the entire Biobío River basin (and its tributaries) during the summer and winter of 2022. The samples were physically (color, size, and shape) and chemically (polymeric composition) analyzed using a microscope, a Fourier-transform infrared (FTIR) spectrometer, and a micro-FTIR. Results showed evident seasonal variations, with a significant increase (∼20 times average) in microplastic concentration (particles/day) in winter (7 × 105-1x108) compared to summer (4 × 103-7x105). Fibers were the dominant morphology with polyethylene terephthalate (PET; 20–40 %) and polypropylene (PP; 20–50 %) as the most abundant polymers. The river downstream showed the highest sample particle diversity (e.g., size, color, and polymeric composition). The river's behavior suggests a main role as a “Reservoir”, corresponding to ∼40–50 % retention of microplastic in the midstream of the Biobío River. Furthermore, a preliminary evaluation using the OpenDrift model, indicated that particles coming from the Biobío River were mainly stranded on the Gulf of Arauco coast (≈100 %), suggesting a potential accumulation zone. This study contributes crucial information to understanding the behavior of plastic pollution in freshwater courses and its likely impacts on the coastal environments.

Návaznosti

90269, velká výzkumná infrastruktura
Název: RECETOX RI II