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
UT WoS
EID Scopus
Klíčová slova anglicky
Plastic pollution; River tributaries; Synthetic fibers; OpenDrift; Particle trajectory; Chilean coast
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
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