Combination of Micro-Raman and Infrared Spectroscopy to Identify Intriguing Case of Aged Microplastics of Estuarine Sediments

Q3 Materials Science

Macromolecular Symposia Pub Date : 2024-12-16 DOI:10.1002/masy.202400061

Jacinete Lima dos Santos, Allan Bereczki, Diego Roberto da Cunha Pascoal, Giovana Teixeira Gimiliani, Marycel Elena Barboza Cotrim, Anderson Zanardi de Freitas, Niklaus Ursus Wetter, Duclerc Fernandes Parra

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引用次数: 0

Abstract

The Atlantic Forest is one of the richest regions in biodiversity in the world. Originally the biome covered around 15% of the Brazilian territory. Currently, there are approximately 12.4% of forest remnants preserved in the country. Regarding mangrove areas in the state of São Paulo, there are around 223 km² according to the Brazilian Mangrove Atlas, with around 120.5 km² located in Baixada Santista. Analysis of sediments found in the estuarine mangroves of Santos shows a high concentration of microplastics (MPs), generated by industrial processes and human activity, that constitutes today one of the main environmental problems. The MPs presented in the sediment samples are quantified using a methodology that involves drying, sieving, quantification, and identification of these MPs through FTIR and micro-Raman spectroscopy. The two techniques complement each other to identify MP filaments and fragments through common polymer spectra. Furthermore, the micro-Raman technique also identified additives flexo blue (blue ink) and neolan green 8G (dye) in MPs. All identified polymers (< 5 mm) have wide applications and demands in various sectors, including packaging, construction, automotive, electronics, and textiles.

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来源期刊

Macromolecular Symposia Materials Science-Polymers and Plastics

CiteScore

1.50

自引率

0.00%

发文量

226

期刊介绍： Macromolecular Symposia presents state-of-the-art research articles in the field of macromolecular chemistry and physics. All submitted contributions are peer-reviewed to ensure a high quality of published manuscripts. Accepted articles will be typeset and published as a hardcover edition together with online publication at Wiley InterScience, thereby guaranteeing an immediate international dissemination.