Evaluation of carbonification of coals using a portable Raman spectrometer

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F23%3A10476102" target="_blank" >RIV/00216208:11310/23:10476102 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=xQx.txp86v" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=xQx.txp86v</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/jrs.6521" target="_blank" >10.1002/jrs.6521</a>

Result language

angličtina

Original language name

Evaluation of carbonification of coals using a portable Raman spectrometer

Original language description

The estimation of the degree of carbonification of coals can be investigated using the Raman microspectroscopy applied for the analysis of grains of selected macerals (altered remains of organic particles). This approach allows for the best control of the analyses such as precise selection and orientation of the maceral grains to be analysed. On the other hand, the miniaturized, especially handheld Raman spectrometers typically offer a significantly less controlled environment with the issues including large laser spot sizes and the focusing issues. However, the advantages of the miniaturized spectrometers include fast analyses and the possibility of in situ analyses. This study illustrates that it is possible to discriminate among the coals of different degrees of maturation of the carbonaceous matter and other types of carbonaceous matter using the data acquired with a portable Raman spectrometer using spectroscopic parameters: D and G band widths and wavenumber positions. The issues inherent to the analyses of such heterogeneous materials such as coals using a portable spectrometer were addressed. Moreover, the variability in the Raman spectroscopic backgrounds of a wide range of coals from lignite to anthracite necessitated the utilization of a robust background removal function. This study shows that modern portable Raman spectrometers with the appropriate excitation are capable of basic discrimination among the different types of carbonaceous matter, with implications towards fast in situ analyses of carbonaceous matter in rocks as an additional tool for a geologist.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10505 - Geology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Raman Spectroscopy

ISSN

0377-0486

e-ISSN

1097-4555

Volume of the periodical

54

Issue of the periodical within the volume

11

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

1220-1232

UT code for WoS article

000975480000001

EID of the result in the Scopus database

2-s2.0-85153592395