A Complementary Metal Oxide Semiconductor sensor array based detection system for Laser Induced Breakdown Spectroscopy: Evaluation of calibration strategies and application for manganese determination in steel

dc.creatorGonzaga, FB
dc.creatorPasquini, C
dc.date2008
dc.dateJAN
dc.date2014-07-30T13:39:25Z
dc.date2015-11-26T16:19:43Z
dc.date2014-07-30T13:39:25Z
dc.date2015-11-26T16:19:43Z
dc.date.accessioned2018-03-28T23:02:32Z
dc.date.available2018-03-28T23:02:32Z
dc.identifierSpectrochimica Acta Part B-atomic Spectroscopy. Pergamon-elsevier Science Ltd, v. 63, n. 1, n. 56, n. 63, 2008.
dc.identifier0584-8547
dc.identifierWOS:000253135100008
dc.identifier10.1016/j.sab.2007.11.005
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/52999
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/52999
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1267729
dc.descriptionThis paper describes a low cost detection system for Laser Induced Breakdown Spectroscopy based on a simple spectrograph employing a conventional diffraction grating and a non-intensified, non-gated, non-cooled 1024 pixel Complementary Metal Oxide Semiconductor linear sensor array covering the spectral range from about 250 to 390 rim. It was employed in conjunction with a 1064 rim, 5 ns pulse duration Nd:YAG laser source for analyzing steel samples using the integration of 300 analysis pulses (35 mJ each). That led to gains in the signal-to-noise ratio of approximately 3 and 16 for Mn and Fe peaks, respectively, in addition to gains in the emission intensities of about 5.3, both in comparison with the integration of just 50 analysis pulses. The acquired emission spectra were used for Mn determination, in the range from 0.214 to 0.608% m/m as previously determined by ICP OES, evaluating different univariate (at different discrete wavelengths) and multivariate (over different spectral ranges) calibration strategies. The best results, using a PLS calibration model in the spectral range from 292.9 to 294.5 nm (related to Mn emission peaks), had relative errors of prediction of the Mn concentrations, for samples not employed in the calibration, from 0.3 to 7.3%, which are similar to or better than those obtained for Mn determination in steel using higher cost detection systems. The successful analytical application of the new detection system demonstrated that the performance of low cost detection systems can be very good for specific applications and that its low resolution and sensitivity can be at least partially compensated by the use of chemometrics and the integration of analysis pulses. (C) 2007 Elsevier B.V. All rights reserved.
dc.description63
dc.description1
dc.description56
dc.description63
dc.languageen
dc.publisherPergamon-elsevier Science Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationSpectrochimica Acta Part B-atomic Spectroscopy
dc.relationSpectroc. Acta Pt. B-Atom. Spectr.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectLIBS
dc.subjectdetection system
dc.subjectPLS
dc.subjectMn determination
dc.subjectInduced Plasma Spectroscopy
dc.subjectSolid-state Lasers
dc.subjectNd-yag Laser
dc.subjectQuantitative-analysis
dc.subjectEchelle Spectrometer
dc.subjectAluminum-alloys
dc.subjectIntensified Ccd
dc.subjectLibs
dc.subjectMicroanalysis
dc.subjectImprovements
dc.titleA Complementary Metal Oxide Semiconductor sensor array based detection system for Laser Induced Breakdown Spectroscopy: Evaluation of calibration strategies and application for manganese determination in steel
dc.typeArtículos de revistas


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