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Method development for direct quantitative analysis of high silicon content samples: laser-induced breakdown spectrometry and Total Reflection X-Ray Fluorescence

Grant number: 17/10346-2
Support Opportunities:Regular Research Grants
Duration: November 01, 2017 - October 31, 2019
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
Principal Investigator:Cassiana Seimi Nomura
Grantee:Cassiana Seimi Nomura
Host Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil


Considering the refractory characteristic of high silicon content samples, such as rocks and slags that require use of different acid mixtures, high pressure and temperature to reach quantitative dissolution, the possibility of performing direct analysis seems to be a good alternative. Laser induced breakdown spectrometry (LIBS) has become an attractive and much explored technique in chemical analysis and, as a solid sampling technique, it allows analysis of solid samples dismissing the dissolution step. Despite all advantages, quantitative analysis of complex matrix by LIBS is not an easy task due to the complex nature of laser-sample and particle-plasma interaction, which cause an undesirable matrix effects. In these cases, the use of appropriate method calibration associated to optimization of instrumental and sample parameters are imperative. Considering quantitative analysis of complex matrix by LIBS is a challenge, the aim of this project is to evaluate the feasibility of using LIBS to perform quantitative measurements of some macro and microelements in high silicon content samples such as rocks and slags. We also intend to evaluate and compare the performance of total reflection X-ray fluorescence (TXRF) in the direct analysis of these samples. Although this technique is widely used in direct solid samples analysis, the influence of particle size on the analytical results as well as the interference of major elements over the minor one should be understood to makes quantitative analysis feasible. (AU)

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Scientific publications (7)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PAPAI, RODRIGO; MARIANO, CLEIDE DA SILVA; PEREIRA, CAMILA VILELA; FERREIRA DA COSTA, PAULO VINICIUS; LEME, FLAVIO DE OLIVEIRA; NOMURA, CASSIANA SEIMI; GAUBEUR, IVANISE. Matte photographic paper as a low-cost material for metal ion retention and elemental measurements with laser-induced breakdown spectroscopy. Talanta, v. 205, . (17/10346-2, 16/23878-0)
DE OLIVEIRA, ALINE PEREIRA; LEME, FLAVIO DE OLIVEIRA; NOMURA, CASSIANA SEIMI; NAOZUKA, JULIANA. Elemental imaging by Laser-Induced Breakdown Spectroscopy to evaluate selenium enrichment effects in edible mushrooms. SCIENTIFIC REPORTS, v. 9, . (18/06332-9, 17/05009-7, 17/10346-2)
CARVALHO, ALEXANDRINA A. C.; COZER, LARISSA A.; LUZ, MACIEL S.; NUNES, LIDIANE C.; ROCHE, FABIO R. P.; NOMURA, CASSIANA S.. Multi-energy calibration and sample fusion as alternatives for quantitative analysis of high silicon content samples by laser-induced breakdown spectrometry. Journal of Analytical Atomic Spectrometry, v. 34, n. 8, p. 1701-1707, . (17/10346-2, 12/11998-0, 14/50951-4)
CARVALHO, ALEXANDRINA A. C.; LEME, FLAVIO O.; LUZ, MACIEL S.; OLIVEIRA, PEDRO V.; NOMURA, CASSIANA S.. Internal standard fused glass beads for high silicon content sample analysis by laser-induced breakdown spectrometry. Journal of Analytical Atomic Spectrometry, v. 33, n. 7, p. 1243-1250, . (17/10346-2, 12/11998-0)
DE OLIVEIRA, ALINE PEREIRA; DOS SANTOS, GISELAINE ALVES; NOMURA, CASSIANA SEIMI; NAOZUKA, JULIANA. Elemental chemical composition of products derived from kefir fermented milk. Journal of Food Composition and Analysis, v. 78, p. 86-90, . (18/06332-9, 17/05009-7, 17/10346-2, 15/15510-0)
CARVALHO, ALEXANDRINA A. C.; SILVESTRE, DANIEL M.; LEME, FLAVIO O.; NAOZUKA, JULIANA; INTIMA, DANIELLE P.; NOMURA, CASSIANA S.. Feasibility of measuring Cr(III) and Cr(VI) in water by laser-induced breakdown spectroscopy using ceramics as the solid support. Microchemical Journal, v. 144, p. 33-38, . (13/13478-6, 12/11998-0, 17/10346-2, 14/50951-4)
FERNANDES, ARTHUR B.; PAVLIUK, V, MARIIA; PAUN, CRISTINA; CARVALHO, ALEXANDRINA C.; NOMURA, CASSIANA S.; LEWIN, ERIK; LINDBLAD, REBECKA; CAMARGO, PEDRO H. C.; SA, JACINTO; BASTOS, ERICK L.. Recoverable and Reusable Polymer Microbead-Supported Metal Nanocatalysts for Redox Chemical Transformations. ACS APPLIED NANO MATERIALS, v. 3, n. 2, p. 1722-1730, . (14/22136-4, 17/10346-2, 19/08450-1, 19/06391-8, 15/25629-4)

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