Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/355088
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampAlmeida, Mariana Ramos de-
dc.contributor.authorunicampCorrêa, Deleon Nascimento-
dc.contributor.authorunicampPoppi, Ronei Jesus-
dc.typeArtigopt_BR
dc.titleDetection of explosives on the surface of banknotes by raman hyperspectral imaging and independent component analysispt_BR
dc.contributor.authorAlmeida, Mariana R.-
dc.contributor.authorCorrea, Deleon N.-
dc.contributor.authorZacca, Jorge J.-
dc.contributor.authorLima Logrado, Lucio Paulo-
dc.contributor.authorPoppi, Ronei J-
dc.subjectExplosivospt_BR
dc.subjectEspectroscopia Raman de imagempt_BR
dc.subject.otherlanguageExplosivespt_BR
dc.subject.otherlanguageRaman spectroscopic imagingpt_BR
dc.description.abstractThe aim of this study was to develop a methodology using Raman hyperspectral imaging and chemometric methods for identification of pre- and post-blast explosive residues on banknote surfaces. The explosives studied were of military, commercial and propellant uses. After the acquisition of the hyperspectral imaging, independent component analysis (ICA) was applied to extract the pure spectra and the distribution of the corresponding image constituents. The performance of the methodology was evaluated by the explained variance and the lack of fit of the models, by comparing the ICA recovered spectra with the reference spectra using correlation coefficients and by the presence of rotational ambiguity in the ICA solutions. The methodology was applied to forensic samples to solve an automated teller machine explosion case. Independent component analysis proved to be a suitable method of resolving curves, achieving equivalent performance with the multivariate curve resolution with alternating least squares (MCR-ALS) method. At low concentrations, MCR-ALS presents some limitations, as it did not provide the correct solution. The detection limit of the methodology presented in this study was 50 mu g cm(-2)pt_BR
dc.relation.ispartofAnalytica chimica actapt_BR
dc.relation.ispartofabbreviationAnal. chim. actapt_BR
dc.publisher.cityAmsterdampt_BR
dc.publisher.countryPaíses Baixospt_BR
dc.publisherElsevierpt_BR
dc.date.issued2015-
dc.date.monthofcirculationFeb.pt_BR
dc.language.isoengpt_BR
dc.description.volume860pt_BR
dc.description.firstpage15pt_BR
dc.description.lastpage22pt_BR
dc.rightsFechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0003-2670pt_BR
dc.identifier.eissn1873-4324pt_BR
dc.identifier.doi10.1016/j.aca.2014.12.034pt_BR
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S000326701401472Xpt_BR
dc.description.sponsorshipCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQpt_BR
dc.date.available2021-02-01T20:41:55Z-
dc.date.accessioned2021-02-01T20:41:55Z-
dc.description.provenanceSubmitted by Cintia Oliveira de Moura (cintiaom@unicamp.br) on 2021-02-01T20:41:55Z No. of bitstreams: 0en
dc.description.provenanceMade available in DSpace on 2021-02-01T20:41:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2015en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/355088-
dc.contributor.departmentsem informaçãopt_BR
dc.contributor.departmentsem informaçãopt_BR
dc.contributor.departmentDepartamento de Química Analíticapt_BR
dc.contributor.unidadeInstituto de Químicapt_BR
dc.identifier.source000349759200003pt_BR
dc.creator.orcidsem informaçãopt_BR
dc.creator.orcid0000-0002-2903-4947pt_BR
dc.creator.orcid0000-0003-2994-0787pt_BR
dc.type.formArtigopt_BR
dc.description.sponsorNoteINCTBiopt_BR
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