A comparison of spectroscopic analysis methods for microplastics: Manual, semi-automated, and automated Fourier transform infrared and Raman techniques.
Mar Pollut Bull
; 173(Pt B): 113101, 2021 Dec.
Article
em En
| MEDLINE
| ID: mdl-34743073
ABSTRACT
This study was conducted to establish the best practice for microplastic analysis by reducing the time demand and human bias and comparing the characteristics of µ-FTIR and Raman techniques. A manual analysis, semi-automated method, and fully automatic identification method were compared. Fully automated identification took the shortest time to analyze a whole filter paper (Ø25 mm), but its false positive identification rate was 80 ± 15%. The semi-automated analysis using spectrum profiling was suitable for all aspects of microplastic analysis. It was less time consuming than the manual analysis (manual 6.1 ± 0.8 h, semi-automated 4.0 ± 0.6 h), and 22 ± 12% more microplastic particles were detected using the semi-automated method compared to the manual analysis due to the reduction in false negative results. Raman microscopy was suitable for small microplastic (>5 µm) identification, although the Raman analysis took nine times longer than the semi-automated analysis.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
/
Microplásticos
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article