Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/350
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.subject.otherINDUCED BREAKDOWN SPECTROSCOPYen
dc.subject.otherPARTIAL LEAST-SQUARESen
dc.subject.otherOPTICAL-EMISSION-SPECTROMETRYen
dc.subject.otherMULTIVARIATE CALIBRATIONen
dc.subject.otherPLANT MATERIALSen
dc.subject.otherELEMENTSen
dc.subject.otherEXTRACTIONen
dc.subject.otherREGRESSIONen
dc.subject.otherINFORMATIONen
dc.subject.otherDIGESTIONen
dc.typeArtigo de periódicopt_BR
dc.type.categoryoriginal articlept_BR
dc.type.versionpublishedVersionpt_BR
dc.titleOptimization and validation of a LIBS method for the determination of macro and micronutrients in sugar cane leavespt_BR
dc.contributor.authorNUNES, Lidiane Cristinapt_BR
dc.contributor.authorBRAGA, Jez Willian Batistapt_BR
dc.contributor.authorTREVIZAN, Lilian Cristinapt_BR
dc.contributor.authorSOUZA, Paulino Florencio dept_BR
dc.contributor.authorCARVALHO, Gabriel Gustinelli Arantes dept_BR
dc.contributor.authorSANTOS JUNIOR, Dariopt_BR
dc.contributor.authorPOPPI, Ronei Jesuspt_BR
dc.contributor.authorKRUG, Francisco Josept_BR
unicamp.authorPOPPI, Ronei Jesus:Universidade Estadual de Campinas, Instituto de Químicapt_BR
unicamp.author.externalNUNES, Lidiane Cristinapt
unicamp.author.externalBRAGA, Jez Willian Batistapt
unicamp.author.externalTREVIZAN, Lilian Cristinapt
unicamp.author.externalSOUZA, Paulino Florencio dept
unicamp.author.externalSANTOS JUNIOR, Dariopt
unicamp.author.externalKRUG, Francisco Josept
unicamp.author.externalCARVALHO, Gabriel Gustinelli Arantes dept
dc.subject.wosChemistry, Analyticalpt_BR
dc.subject.wosSpectroscopypt_BR
dc.description.abstractLaser induced breakdown spectrometry (LIBS) was applied for the determination of macro (P, K, Ca, Mg) and micronutrients (B, Cu, Fe, Mn and Zn) in sugar cane leaves, which is one of the most economically important crops in Brazil. Operational conditions were previously optimized by a neuro-genetic approach, by using a laser Nd:YAG at 1064 nm with 110 mJ per pulse focused on a pellet surface prepared with ground plant samples. Emission intensities were measured after 2.0 mu s delay time, with 4.5 mu s integration time gate and 25 accumulated laser pulses. Measurements of LIBS spectra were based on triplicate and each replicate consisted of an average of ten spectra collected in different sites (craters) of the pellet. Quantitative determinations were carried out by using univariate calibration and chemometric methods, such as PLSR and iPLS. The calibration models were obtained by using 26 laboratory samples and the validation was carried out by using 15 test samples. For comparative purpose, these samples were also microwave-assisted digested and further analyzed by ICP OES. In general, most results obtained by LIBS did not differ significantly from ICP OES data by applying a t-test at 95% confidence level. Both LIBS multivariate and univariate calibration methods produced similar results, except for Fe where better results were achieved by the multivariate approach. Repeatability precision varied from 0.7 to 15% and 1.3 to 20% from measurements obtained by multivariate and univariate calibration, respectively. It is demonstrated that LIBS is a powerful tool for analysis of pellets of plant materials for determination of macro and micronutrients by choosing calibration and validation samples with similar matrix composition.en
dc.relation.ispartofJournal of Analytical Atomic Spectrometrypt_BR
dc.publisher.countryInglaterrapt_BR
dc.publisherROYAL SOC CHEMISTRYpt_BR
dc.date.issued2010pt_BR
dc.identifier.citationJOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, v.25, n.9, p.1453-1460, 2010pt_BR
dc.language.isoengpt_BR
dc.description.volume25pt_BR
dc.description.issuenumber9pt_BR
dc.description.firstpage1453pt_BR
dc.description.lastpage1460pt_BR
dc.rightsfechadopt_BR
dc.rights.holderCopyright ROYAL SOC CHEMISTRYpt_BR
dc.sourceWOSpt_BR
unicamp.cruespUSPpt_BR
dc.identifier.issn0267-9477pt_BR
dc.identifier.doi10.1039/c003620jpt_BR
dc.identifier.urlhttp://apps.isiknowledge.com/InboundService.do?Func=Frame&product=WOS&action=retrieve&SrcApp=EndNote&UT=000281109600012&Init=Yes&SrcAuth=ResearchSoft&mode=FullRecordpt_BR
dc.identifier.urlhttp://dx.doi.org/10.1039/c003620jpt_BR
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorship1Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorship1Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.date.available2013-07-26T17:57:37Z
dc.date.available2016-07-01T12:54:16Z-
dc.date.accessioned2013-07-26T17:57:37Z
dc.date.accessioned2016-07-01T12:54:16Z-
dc.description.provenanceMade available in DSpace on 2013-07-26T17:57:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2010en
dc.description.provenanceMade available in DSpace on 2016-07-01T12:54:16Z (GMT). No. of bitstreams: 0 Previous issue date: 2010en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/350
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/350-
dc.contributor.unidadeIQpt
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