MCR-ALS aplicado no monitoramento quantitativo do processo de eletrodegradação da atrazina usando espectros UV : resultados comparativos com HPLC-DAD como um método de referência.
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/6698 http://dx.doi.org/10.5935/0100-4042.20160006 |
Resumo: | Electrodegradation of atrazine in water was performed using homemade (PA and PB) and purchased (PC) boron-doped diamond anodes. The degradation was monitored off-line by analyzing total organic carbon and high performance liquid chromatography with diode array detector (HPLC-DAD) and at-line by UV spectroscopy. The spectra were recorded every 2 min. The rank deficiency problem was resolved by assembling an augmented column-wise matrix. HPLC was employed to separate the original and byproducts degradation components. Aiming the same goal, multivariate curve resolution – alternating least squares (MCR-ALS) was applied to resolve the UV spectroscopic data. Comparison between HPLC and MCR-ALS separations is presented. By using MCR-ALS the spectra of atrazine and two byproducts were successfully resolved and the resulted concentration profiles properly represented the system studied. The ALS explained variance (R2) for PA, PB and PC was equal to 99.99% for all of them and the lack of fit for PA, PB and PC were 0.39, 0.34 and 0.54 respectively. The correlation (R) between the recovered and pure spectra were calculate for each electrodegradation, validating the MCR-ALS results. The average R was equal to 0.997. The spectral and concentration profiles described with this new approach are in agreement with HPLC-DAD results. The proposed method is an alternative to classical analyses for monitoring of the degradation process, mainly due to the simplicity, fast results and economy. |
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Souza, Thálisson SantosZanin, Hudson GiovaniPeterlevitz, Alfredo CarlosBaranauskas, VitorSilva, Gilmare Antônia daReis, CesarReis, Efraim LázaroTeófilo, Reinaldo Francisco2016-07-29T16:58:04Z2016-07-29T16:58:04Z2016SOUZA, T. S. et al. MCR-ALS aplicado no monitoramento quantitativo do processo de eletrodegradação da atrazina usando espectros UV: resultados comparativos com HPLC-DAD como um método de referência. Química Nova, v. 39, p. 137-45, 2016. Disponível em: <http://www.scielo.br/pdf/qn/v39n2/0100-4042-qn-39-02-0137.pdf>. Acesso em: 16 jun. 2016.1678-7064http://www.repositorio.ufop.br/handle/123456789/6698http://dx.doi.org/10.5935/0100-4042.20160006Electrodegradation of atrazine in water was performed using homemade (PA and PB) and purchased (PC) boron-doped diamond anodes. The degradation was monitored off-line by analyzing total organic carbon and high performance liquid chromatography with diode array detector (HPLC-DAD) and at-line by UV spectroscopy. The spectra were recorded every 2 min. The rank deficiency problem was resolved by assembling an augmented column-wise matrix. HPLC was employed to separate the original and byproducts degradation components. Aiming the same goal, multivariate curve resolution – alternating least squares (MCR-ALS) was applied to resolve the UV spectroscopic data. Comparison between HPLC and MCR-ALS separations is presented. By using MCR-ALS the spectra of atrazine and two byproducts were successfully resolved and the resulted concentration profiles properly represented the system studied. The ALS explained variance (R2) for PA, PB and PC was equal to 99.99% for all of them and the lack of fit for PA, PB and PC were 0.39, 0.34 and 0.54 respectively. The correlation (R) between the recovered and pure spectra were calculate for each electrodegradation, validating the MCR-ALS results. The average R was equal to 0.997. The spectral and concentration profiles described with this new approach are in agreement with HPLC-DAD results. The proposed method is an alternative to classical analyses for monitoring of the degradation process, mainly due to the simplicity, fast results and economy.A Sociedade Brasileira de Química dá permissão à UFOP para reproduzir no RI/UFOP, uma cópia em formato eletrônico dos artigos completos, sem nenhuma edição e/ou modificação, publicados na revista Química Nova, que tenham como autores seus alunos e/ou professores. Fonte: Email do editor de 17 set. 2013.info:eu-repo/semantics/openAccessElectrodegradationBoron doped diamondAtrazineMultivariate curve resolution alternating least squaresMCR-ALS aplicado no monitoramento quantitativo do processo de eletrodegradação da atrazina usando espectros UV : resultados comparativos com HPLC-DAD como um método de referência.MCR - ALS applied to the quantitative monitoring of the electrodegradation process of atrazine using UV spectra : comparative results with HPLC - DAD as a reference method.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleporreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-8924http://www.repositorio.ufop.br/bitstream/123456789/6698/2/license.txt62604f8d955274beb56c80ce1ee5dcaeMD52ORIGINALARTIGO_MCRALSAplicado.pdfARTIGO_MCRALSAplicado.pdfapplication/pdf4725851http://www.repositorio.ufop.br/bitstream/123456789/6698/1/ARTIGO_MCRALSAplicado.pdfe64f25429d7a0a58807560925846d9f4MD51123456789/66982019-09-23 10:40:23.654oai:localhost: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ório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-09-23T14:40:23Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
MCR-ALS aplicado no monitoramento quantitativo do processo de eletrodegradação da atrazina usando espectros UV : resultados comparativos com HPLC-DAD como um método de referência. |
dc.title.alternative.pt_BR.fl_str_mv |
MCR - ALS applied to the quantitative monitoring of the electrodegradation process of atrazine using UV spectra : comparative results with HPLC - DAD as a reference method. |
title |
MCR-ALS aplicado no monitoramento quantitativo do processo de eletrodegradação da atrazina usando espectros UV : resultados comparativos com HPLC-DAD como um método de referência. |
spellingShingle |
MCR-ALS aplicado no monitoramento quantitativo do processo de eletrodegradação da atrazina usando espectros UV : resultados comparativos com HPLC-DAD como um método de referência. Souza, Thálisson Santos Electrodegradation Boron doped diamond Atrazine Multivariate curve resolution alternating least squares |
title_short |
MCR-ALS aplicado no monitoramento quantitativo do processo de eletrodegradação da atrazina usando espectros UV : resultados comparativos com HPLC-DAD como um método de referência. |
title_full |
MCR-ALS aplicado no monitoramento quantitativo do processo de eletrodegradação da atrazina usando espectros UV : resultados comparativos com HPLC-DAD como um método de referência. |
title_fullStr |
MCR-ALS aplicado no monitoramento quantitativo do processo de eletrodegradação da atrazina usando espectros UV : resultados comparativos com HPLC-DAD como um método de referência. |
title_full_unstemmed |
MCR-ALS aplicado no monitoramento quantitativo do processo de eletrodegradação da atrazina usando espectros UV : resultados comparativos com HPLC-DAD como um método de referência. |
title_sort |
MCR-ALS aplicado no monitoramento quantitativo do processo de eletrodegradação da atrazina usando espectros UV : resultados comparativos com HPLC-DAD como um método de referência. |
author |
Souza, Thálisson Santos |
author_facet |
Souza, Thálisson Santos Zanin, Hudson Giovani Peterlevitz, Alfredo Carlos Baranauskas, Vitor Silva, Gilmare Antônia da Reis, Cesar Reis, Efraim Lázaro Teófilo, Reinaldo Francisco |
author_role |
author |
author2 |
Zanin, Hudson Giovani Peterlevitz, Alfredo Carlos Baranauskas, Vitor Silva, Gilmare Antônia da Reis, Cesar Reis, Efraim Lázaro Teófilo, Reinaldo Francisco |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Souza, Thálisson Santos Zanin, Hudson Giovani Peterlevitz, Alfredo Carlos Baranauskas, Vitor Silva, Gilmare Antônia da Reis, Cesar Reis, Efraim Lázaro Teófilo, Reinaldo Francisco |
dc.subject.por.fl_str_mv |
Electrodegradation Boron doped diamond Atrazine Multivariate curve resolution alternating least squares |
topic |
Electrodegradation Boron doped diamond Atrazine Multivariate curve resolution alternating least squares |
description |
Electrodegradation of atrazine in water was performed using homemade (PA and PB) and purchased (PC) boron-doped diamond anodes. The degradation was monitored off-line by analyzing total organic carbon and high performance liquid chromatography with diode array detector (HPLC-DAD) and at-line by UV spectroscopy. The spectra were recorded every 2 min. The rank deficiency problem was resolved by assembling an augmented column-wise matrix. HPLC was employed to separate the original and byproducts degradation components. Aiming the same goal, multivariate curve resolution – alternating least squares (MCR-ALS) was applied to resolve the UV spectroscopic data. Comparison between HPLC and MCR-ALS separations is presented. By using MCR-ALS the spectra of atrazine and two byproducts were successfully resolved and the resulted concentration profiles properly represented the system studied. The ALS explained variance (R2) for PA, PB and PC was equal to 99.99% for all of them and the lack of fit for PA, PB and PC were 0.39, 0.34 and 0.54 respectively. The correlation (R) between the recovered and pure spectra were calculate for each electrodegradation, validating the MCR-ALS results. The average R was equal to 0.997. The spectral and concentration profiles described with this new approach are in agreement with HPLC-DAD results. The proposed method is an alternative to classical analyses for monitoring of the degradation process, mainly due to the simplicity, fast results and economy. |
publishDate |
2016 |
dc.date.accessioned.fl_str_mv |
2016-07-29T16:58:04Z |
dc.date.available.fl_str_mv |
2016-07-29T16:58:04Z |
dc.date.issued.fl_str_mv |
2016 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
SOUZA, T. S. et al. MCR-ALS aplicado no monitoramento quantitativo do processo de eletrodegradação da atrazina usando espectros UV: resultados comparativos com HPLC-DAD como um método de referência. Química Nova, v. 39, p. 137-45, 2016. Disponível em: <http://www.scielo.br/pdf/qn/v39n2/0100-4042-qn-39-02-0137.pdf>. Acesso em: 16 jun. 2016. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/6698 |
dc.identifier.issn.none.fl_str_mv |
1678-7064 |
dc.identifier.doi.none.fl_str_mv |
http://dx.doi.org/10.5935/0100-4042.20160006 |
identifier_str_mv |
SOUZA, T. S. et al. MCR-ALS aplicado no monitoramento quantitativo do processo de eletrodegradação da atrazina usando espectros UV: resultados comparativos com HPLC-DAD como um método de referência. Química Nova, v. 39, p. 137-45, 2016. Disponível em: <http://www.scielo.br/pdf/qn/v39n2/0100-4042-qn-39-02-0137.pdf>. Acesso em: 16 jun. 2016. 1678-7064 |
url |
http://www.repositorio.ufop.br/handle/123456789/6698 http://dx.doi.org/10.5935/0100-4042.20160006 |
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