A1 Journal article (refereed)
Enhanced quantification of wollastonite and calcite in limestone using fluorescence correction based on continuous wavelet transformation for Raman (2021)
Laakso, K., Kangas, L., Häkkänen, H., Kaski, S., & Leveinen, J. (2021). Enhanced quantification of wollastonite and calcite in limestone using fluorescence correction based on continuous wavelet transformation for Raman. Applied Spectroscopy Reviews, 56(1), 67-84. https://doi.org/10.1080/05704928.2020.1729170
JYU authors or editors
Publication details
All authors or editors: Laakso, Kati; Kangas, Lasse; Häkkänen, Heikki; Kaski, Saara; Leveinen, Jussi
Journal or series: Applied Spectroscopy Reviews
ISSN: 0570-4928
eISSN: 1520-569X
Publication year: 2021
Volume: 56
Issue number: 1
Pages range: 67-84
Publisher: Taylor & Francis
Publication country: United States
Publication language: English
DOI: https://doi.org/10.1080/05704928.2020.1729170
Publication open access: Not open
Publication channel open access:
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67985
Abstract
Raman spectroscopy offers a nondestructive means to identify minerals in rocks, but the ability to use the technology for quantitative mineralogical analysis is limited by fluorescence that can mask the spectral features of minerals. In this paper we apply continuous wavelet transformation (CWT) to remove fluoresence from Raman data acquired from 26 carbonate rock samples. We then record the intensity values of individual spectral features, proxies for mineral abundances, using the original Raman data and the thus inferred CWT data. The intensity values are then compared against the known mineral abundances determined using the scanning electron microscope (SEM) technology. This comparison is conducted using a linear regression model to determine whether fluorescence removal enhances the mineral abundance predictions. Our results suggest that CWT enhances the accuracy of mineral abundance estimates, thus highlighting the importance of fluorescence removal when using Raman for quantitative mineralogical analysis.
Keywords: spectroscopy; fluorescence; minerals; mineralogy
Free keywords: Raman; fluorescence; wavelets; wollastonite; calcite
Contributing organizations
Related projects
- New laser and spectral field methods for in situ mining and raw material investigations
- Kaski, Saara
- Research Council of Finland
Ministry reporting: Yes
Reporting Year: 2021
JUFO rating: 1