Discrimination of moist oil shale and limestone using laser induced breakdown spectroscopy

Autor:	A. Lissovski, Matti Laan, M. Aints, Peeter Paris, K. Piip, A. Lepp
Rok vydání:	2015
Předmět:	Moisture Chemistry Plasma parameters Analytical chemistry Mineralogy Plasma Atomic and Molecular Physics and Optics Spectral line Analytical Chemistry Laser-induced breakdown spectroscopy Emission spectrum Instrumentation Water content Oil shale Spectroscopy
Zdroj:	Spectrochimica Acta Part B: Atomic Spectroscopy. 107:61-66
ISSN:	0584-8547
DOI:	10.1016/j.sab.2015.02.017
Popis:	Laser-induced plasma emission spectra of Estonian oil shale and associated limestone with varying moisture content were studied. Time gated spectra excited by 1064 nm laser radiation were recorded. Spectral lines for determination of plasma parameters were selected. Moisture causes the reduction of the intensity of the total emission, and increases the intensity of the H α line. It was found that the effect of the moisture content on the plasma temperature and electron concentration was inconsiderable. Using the ratio of intensities of H α and Mg spectral lines, it was possible to distinguish reliably between limestone and oil shale independently of their moisture content.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bf38af160518dff96d326b8e9e4fea44 https://doi.org/10.1016/j.sab.2015.02.017 Zobrazit plný text záznamu Full Text from ScienceDirect