KLUS, Jakub, Petr MIKYSEK, David PROCHAZKA, Pavel POŘÍZKA, Petra PROCHAZKOVÁ, Jan NOVOTNÝ, Tomáš TROJEK, Karel NOVOTNÝ, Marek SLOBODNÍK a Jozef KAISER. Multivariate approach to the chemical mapping of uranium in sandstone-hosted uranium ores analyzed using double pulse Laser-Induced Breakdown Spectroscopy. Spectrochimica Acta B. Elsevier, 2016, roč. 123, September, s. 143-149. ISSN 0584-8547. Dostupné z: https://dx.doi.org/10.1016/j.sab.2016.08.014. |
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@article{1352282, author = {Klus, Jakub and Mikysek, Petr and Prochazka, David and Pořízka, Pavel and Prochazková, Petra and Novotný, Jan and Trojek, Tomáš and Novotný, Karel and Slobodník, Marek and Kaiser, Jozef}, article_number = {September}, doi = {http://dx.doi.org/10.1016/j.sab.2016.08.014}, keywords = {LIBS; Uranium principal component analysis; Chemical mapping; Sandstone hosted deposit; X ray Fluorescence}, language = {eng}, issn = {0584-8547}, journal = {Spectrochimica Acta B}, title = {Multivariate approach to the chemical mapping of uranium in sandstone-hosted uranium ores analyzed using double pulse Laser-Induced Breakdown Spectroscopy}, url = {http://www.sciencedirect.com/science/article/pii/S058485471630146X}, volume = {123}, year = {2016} }
TY - JOUR ID - 1352282 AU - Klus, Jakub - Mikysek, Petr - Prochazka, David - Pořízka, Pavel - Prochazková, Petra - Novotný, Jan - Trojek, Tomáš - Novotný, Karel - Slobodník, Marek - Kaiser, Jozef PY - 2016 TI - Multivariate approach to the chemical mapping of uranium in sandstone-hosted uranium ores analyzed using double pulse Laser-Induced Breakdown Spectroscopy JF - Spectrochimica Acta B VL - 123 IS - September SP - 143-149 EP - 143-149 PB - Elsevier SN - 05848547 KW - LIBS KW - Uranium principal component analysis KW - Chemical mapping KW - Sandstone hosted deposit KW - X ray Fluorescence UR - http://www.sciencedirect.com/science/article/pii/S058485471630146X L2 - http://www.sciencedirect.com/science/article/pii/S058485471630146X N2 - This work is focused on the high resolution mapping of uranium in sandstone-hosted uranium ores using Laser-Induced Breakdown Spectroscopy technique. In order to obtain chemical image with highest possible spatial resolution, LIBS system in orthogonal double pulse arrangement was employed. Owing to this experimental arrangement the spot size of 50 um in diameter resulting in lateral resolution of 100 um was reached. Despite the increase in signal intensity in DP LIBS modification, the detection of uranium is challenging. The main cause is the high density of uranium spectral lines, which together with broadening of LIBS spectral lines overreaches the resolution of commonly used spectrometers. It results in increased overall background radiation with only few distinguishable uranium lines. Three different approaches in the LIBS data treatment for the uranium detection were utilized: i) spectral line intensity, ii) region of apparent background and iii) multivariate data analysis. By utilizing multivariate statistical methods, a specific specimen features (in our case uranium content) were revealed by processing complete spectral information obtained from broadband echelle spectrograph. Our results are in a good agreement with conventional approaches such as line fitting and show new possibilities of processing spectral data in mapping. As a reference technique to LIBS was employed X-ray Fluorescence. The XRF chemical images used in this paper have lower resolution (approximately 1–2 mm per image point), nevertheless the elemental distribution is apparent and corresponds to presented LIBS experiments. ER -
KLUS, Jakub, Petr MIKYSEK, David PROCHAZKA, Pavel POŘÍZKA, Petra PROCHAZKOVÁ, Jan NOVOTNÝ, Tomáš TROJEK, Karel NOVOTNÝ, Marek SLOBODNÍK a Jozef KAISER. Multivariate approach to the chemical mapping of uranium in sandstone-hosted uranium ores analyzed using double pulse Laser-Induced Breakdown Spectroscopy. \textit{Spectrochimica Acta B}. Elsevier, 2016, roč.~123, September, s.~143-149. ISSN~0584-8547. Dostupné z: https://dx.doi.org/10.1016/j.sab.2016.08.014.
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