Combination of micro-Raman and infrared spectroscopy to identify intriguing case of aged microplastics of estuarine sediments
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Macromolecular Symposia
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Resumo
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.
Como referenciar
SANTOS, JACINETE L. dos; BERECZKI, ALLAN; PASCOAL, DIEGO R. da C.; GIMILIANI, GIOVANA T.; COTRIM, MARYCEL E.B.; FREITAS, ANDERSON Z. de; WETTER, NIKLAUS U.; PARRA, DUCLERC F. Combination of micro-Raman and infrared spectroscopy to identify intriguing case of aged microplastics of estuarine sediments. Macromolecular Symposia, v. 413, n. 6, p. 1-3, 2024. DOI: 10.1002/masy.202400061. Disponível em: https://repositorio.ipen.br/handle/123456789/49026. Acesso em: 30 Apr 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.