Combination of Micro‐Raman and Infrared Spectroscopy to Identify Intriguing Case of Aged Microplastics of Estuarine Sediments
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 km 2 according to the Brazilian Mangrove Atlas, with around 120.5 km 2 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 (textless 5 mm) have wide applications and demands in various sectors, including packaging, construction, automotive, electronics, and textiles.
Citação
@online{santos,_jacinete_lima2024,
author = {Santos, Jacinete Lima, Dos and Allan , Bereczki and Diego
Roberto Da Cunha , Pascoal and Giovana Teixeira , Gimiliani and
Marycel Elena Barboza , Cotrim and Freitas, Anderson Zanardi, De and
Niklaus Ursus , Wetter and Duclerc Fernandes , Parra},
title = {Combination of Micro‐Raman and Infrared Spectroscopy to
Identify Intriguing Case of Aged Microplastics of Estuarine
Sediments},
volume = {413},
number = {6},
date = {2024-12-01},
doi = {10.1002/masy.202400061},
langid = {pt-BR},
abstract = {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 km 2
according to the Brazilian Mangrove Atlas, with around 120.5 km 2
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 (textless~5~mm) have wide applications and
demands in various sectors, including packaging, construction,
automotive, electronics, and textiles.}
}