Evaluation of laser induced breakdown spectroscopy for the determination of macronutrients in plant materials

Evaluation of laser induced breakdown spectroscopy for the determination of macronutrients in plant materials

Autor Trevizan, Lilian Cristina Google Scholar
Santos, Dario Autor UNIFESP Google Scholar
Samad, Ricardo Elgul Google Scholar
Vieira, Nilson Dias Google Scholar
Nomura, Cassiana Seimi Google Scholar
Nunes, Lidiane Cristina Google Scholar
Rufini, Iolanda Aparecida Google Scholar
Krug, Francisco Jose Google Scholar
Instituição Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
IPEN CNEN SP
Universidade Federal do ABC (UFABC)
Universidade Federal de São Carlos (UFSCar)
Resumo Laser induced breakdown spectroscopy (LIBS) has become an analytical tool for the direct analysis of a large variety of materials in order to provide qualitative and/or quantitative information. However, there is a lack of information for LIBS analysis of agricultural and environmental samples. in this work a LIBS system has been evaluated for the determination of macronutrients (P, K, Ca, Mg) in pellets of vegetal reference materials. An experimental setup was designed by using a Nd:YAG laser operating at 1064 nm and an Echelle spectrometer with ICCD detector. the plasma temperature was estimated by Boltzmann plots and instrumental paragmeters such as delay time, lens-to-sample distance and pulse energy were evaluated. Certified reference materials as well as reference materials were used for analytical calibrations of P, K, Ca, and Mg. Most results of the direct analysis of plant samples by LIBS were in reasonable agreement with those obtained by ICP OES after wet acid decomposition. (C) 2008 Elsevier B.V. All rights reserved.
Palavra-chave LIBS
Plant analysis
Macronutrients
Idioma Inglês
Data de publicação 2008-10-01
Publicado em Spectrochimica Acta Part B-atomic Spectroscopy. Oxford: Pergamon-Elsevier B.V., v. 63, n. 10, p. 1151-1158, 2008.
ISSN 0584-8547 (Sherpa/Romeo, fator de impacto)
Publicador Elsevier B.V.
Extensão 1151-1158
Fonte http://dx.doi.org/10.1016/j.sab.2008.08.005
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000261523400023
Endereço permanente http://repositorio.unifesp.br/handle/11600/30951

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