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Evaluation of different calibration strategies in Laser-Induced Breakdown Spectroscopy (LIBS) for the determination of carbon, macro and micronutrients in soil samples

Grant number: 21/01187-3
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Effective date (Start): May 01, 2021
Effective date (End): February 28, 2022
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Débora Marcondes Bastos Pereira
Grantee:Vinicius Câmara Costa
Host Institution: Embrapa Instrumentação Agropecuária. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). Ministério da Agricultura, Pecuária e Abastecimento (Brasil). São Carlos , SP, Brazil
Associated research grant:13/07276-1 - CEPOF - Optics and Photonic Research Center, AP.CEPID

Abstract

In the last 20 years, Laser-Induced Breakdown Spectroscopy (LIBS) has become one of the most promising analytical techniques, whose applications are mainly focused on direct analysis of solid samples. Its applications are the most diverse, since its instrumentation is relatively simple and can be portable. In addition, it presents high analytical frequency, multi-elementary character, and reduced handling of the samples. In particular, the LIBS has great potential application in Agriculture, with emphasis on soil analysis aiming at the determination of carbon, macro and micronutrients. Despite, the potential already highlighted, the LIBS present great challenges to be overcome, especially in quantitative analysis in complex samples. Despite, the potential already highlighted, the LIBS present great challenges to be overcome, especially in quantitative analysis in complex samples. Among these challenges, the most prominent is the matrix effect that impairs the precision and accuracy of the measurements, limiting their application in routine analyzes. One of the ways to overcome matrix effects is by using appropriate calibrations. Therefore, this research project intends to evaluate different calibration strategies in LIBS, to overcome matrix effects in the determination of carbon, macro and micronutrients in a soil sample. Recent calibration strategies called "non-traditional calibration" such as: Multi-Energy Calibration (MEC); One-Point Gravimetric Standard Addition (OP GSA); One-Point And Multiline Calibration (OP MLC); Two-Point Calibration Transfer (TP CT) and Single-Sample Calibration (SSC) will be evaluated. The calibrations will be tested, together with different data treatment strategies, in order to minimize signal variations and minimize differences in the sample matrix. The applications of these calibrations can enhance the use of LIBS in soil analysis, opening possibilities for the LIBS to be implemented in routine laboratories. (AU)

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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)
DE MORAIS, CARLA PEREIRA; BABOS, DIEGO VICTOR; COSTA, VINICIUS CAMARA; NERIS, JORDAN BRIZI; NICOLODELLI, GUSTAVO; MITSUYUKI, MILENE CORSO; MAUAD, FREDERICO FABIO; MOUNIER, STEPHANE; PEREIRA MILORI, DEBORA MARCONDES BASTOS. Direct determination of Cu, Cr, and Ni in river sediments using double pulse laser-induced breakdown spectroscopy: Ecological risk and pollution level assessment. Science of The Total Environment, v. 837, p. 9-pg., . (13/07276-1, 21/01187-3)
WYATT, NATHALIA LUIZA P.; COSTA, VINICIUS C.; DE SOUZA, JEFFERSON R.; FERDE, MERISNET; COSTA, FLORIATAN S.; NERIS, JORDAN B.; BRANDAO, GEISAMANDA P.; GUEDES, WESLEY N.; CARNEIRO, MARIA TEREZA W. D.. Unsupervised pattern-recognition and radiological risk assessment applied to the evaluation of behavior of rare earth elements, Th, and U in monazite sand. Environmental Science and Pollution Research, v. N/A, p. 9-pg., . (21/01187-3)
SANTANA COSTA, JOSE ARNALDO; COSTA, VINICIUS CAMARA; DE MELLO, MATHEUS LIMA; PARANHOS, CAIO MARCIO. pplication of the experimental design in the optimization of a procedure for antimony (Sb) remediation in environmental samples employing mesoporous arra. Environmental Science and Pollution Research, v. 29, n. 8, . (13/07296-2, 17/06775-5, 21/01187-3)
STENIO, KLEYDSON; COSTA, VINICIUS CAMARA; DE MORAIS, CARLA PEREIRA; MAGALHAES, AIDA BEBEACHIBULI; MILORI, DEBORA MARCONDES BASTOS PEREIRA. Direct determination of nutrient elements in plant leaves by double pulse laser-induced breakdown spectroscopy: evaluation of calibration strategies using direct and inverse models for matrix-matching. ANALYTICAL METHODS, v. 14, n. 12, p. 8-pg., . (21/01187-3, 13/07276-1)

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