Weathering indices of microplastics along marine and coastal sediments from the harbor of Cartagena (Spain) and its adjoining urban beach
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Knowledge AreaEcologíal; Tecnologías del Medio Ambiente
SponsorsWe thank Pedro Martínez for technical assistance. This work was financially supported by grant 20268/FPI/17 from Fundación Séneca assigned to Dr. Sonia Olmos and by Project Number 5813/19IQA from Cartagena Port Authority.
Realizado en/conUniversidad Politécnica de Cartagena
Bibliographic CitationJavier Bayo, Dolores Rojo, Sonia Olmos, Weathering indices of microplastics along marine and coastal sediments from the harbor of Cartagena (Spain) and its adjoining urban beach, Marine Pollution Bulletin, Volume 178, 2022, 113647, ISSN 0025-326X, https://doi.org/10.1016/j.marpolbul.2022.113647.
Marine and coastal sediments from the harbor of Cartagena (Spain) and its adjoining beach were investigated regarding their microplastic burden. Fibers accounted for 47.62% and 61.66% in marine and coastal sediments, respectively, followed by films (31.43% and 18.76%) and fragments (20.95% and 18.65%). Polyvinyl (36.07%), polypropylene (21.31%), and polyethylene (18.03%) were isolated for marine sediments, and low-density polyethylene (40.71%), polypropylene (20.16%), and acrylate (11.37%) for coastal sediments. Highest concentrations were found in the deepest marine sediments (24.0 m) and in the furthest zone from the seashore for coastal sediments (18 m). Carbonyl index increased in the intermediate area (12.5 m) for marine sediments (0.51), whilst vinyl index was maximum for the deepest samples (1.94), reporting Norrish type I and II reactions, respectively. Coastal sediments collected close to the high tide line displayed the highest average values for both indices, 1.57 and 1.29, ...
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