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Evaluation of the effect of laser and sample properties in the direct analysis of meats by Laser Induced Breakdown Spectroscopy (LIBS)

Grant number: 13/13478-6
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): September 01, 2013
Effective date (End): May 31, 2016
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
Principal Investigator:Cassiana Seimi Nomura
Grantee:Flavio de Oliveira Leme
Home Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil


Laser induced breakdown spectroscopy (LIBS) has been an attractive and fairly explored analytical technique for elemental analysis of environmental, agronomic, and industrial samples with minimal or no sample preparation. Besides of characteristics of the direct analysis techniques, LIBS is multielement and can be used in field analyzes due to availability of portable instruments. However, the quantitative analysis is still considered its "Achilles' heel" because of complex processes involved in the laser-sample interaction and calibration difficulties due to unavailability of solid standards. In this context, this research project aims to evaluate the effect of laser and sample properties, the ablation atmosphere and the parameters of optical emission measurement in the analytical performance of LIBS analysis of beef and chicken. The feasibility of use secondary reference materials for the calibration will also be evaluated. The materials studied will be the filter paper and / or cellulose, babaçu mesocarp, and lyophilised and ground meat samples with different levels of inorganic contaminants, macro and micronutrients. The accuracy of LIBS results will be estimated by means of comparison with determinations carried out by ICP OES.

Scientific publications (4)
(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)
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, JAN 2019. Web of Science Citations: 5.
LEME, FLAVIO O.; SILVESTRE, DANIEL M.; NASCIMENTO, ANGERSON N.; NOMURA, CASSIANA S. Feasibility of using laser induced breakdown spectroscopy for quantitative measurement of calcium, magnesium, potassium and sodium in meat. Journal of Analytical Atomic Spectrometry, v. 33, n. 8, p. 1322-1329, AUG 1 2018. Web of Science Citations: 2.
CARVALHO, ALEXANDRINA A. C.; ALVES, VICTORIA C.; SILVESTRE, DANIEL M.; LEME, FLAVIO O.; OLIVEIRA, PEDRO V.; NOMURA, CASSIANA S. Comparison of Fused Glass Beads and Pressed Powder Pellets for the Quantitative Measurement of Al, Fe, Si and Ti in Bauxite by Laser-Induced Breakdown Spectroscopy. GEOSTANDARDS AND GEOANALYTICAL RESEARCH, v. 41, n. 4, p. 585-592, DEC 2017. Web of Science Citations: 3.
SILVESTRE, DANIEL MENEZES; LEME, FLAVIO DE OLIVEIRA; NOMURA, CASSIANA SEIMI; DO NASCIMENTO, ANGERSON NOGUEIRA. Direct analysis of barium, calcium, potassium, and manganese concentrations in tobacco by laser-induced breakdown spectroscopy. Microchemical Journal, v. 126, p. 545-550, MAY 2016. Web of Science Citations: 9.

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