REGRESSÃO MULTIVARIADA POR OPLS E PLS DOS ESPECTROS DE RMN DE 1H DE MISTURAS DIESEL/BIODIESEL DE MAFURRA PARA ESTIMATIVA DO TEOR DE BIODIESEL
| العنوان: | REGRESSÃO MULTIVARIADA POR OPLS E PLS DOS ESPECTROS DE RMN DE 1H DE MISTURAS DIESEL/BIODIESEL DE MAFURRA PARA ESTIMATIVA DO TEOR DE BIODIESEL |
|---|---|
| المؤلفون: | Ademar Domingos Viagem Máquina, Douglas Queiroz Santos, Maria T. C. Ferreira, Baltazar Vasco Sitoe, Waldomiro Borges Neto |
| المصدر: | Química Nova v.43 n.7 2020 Química Nova Sociedade Brasileira de Química (SBQ) instacron:SBQ Química Nova, Volume: 43, Issue: 7, Pages: 863-869, Published: 21 AUG 2020 Química Nova, Vol 43, Iss 7, Pp 863-869 (2020) |
| بيانات النشر: | Sociedade Brasileira de Química, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Multivariate statistics, Biodiesel, Chromatography, OPLS, Monitoring, Chemistry, General Chemistry, 1H NMR spectrometry, PLS, Diesel fuel, Proton NMR, mafurra Biodiesel, QD1-999 |
| الوصف: | Two methodologies were developed to monitor the biodiesel content of mafurra in mixtures with diesel using hydrogen nuclear magnetic resonance (1H NMR) Spectroscopy combined with the multivariate regression by orthogonal projections to latent structure (OPLS) and partial least squares (PLS). The efficiency of these methodologies was analyzed based on the figures of merit and the fit of the models through the correlation of the measured and predicted values of the calibration and prediction sets. The results of the figures of merit in the OPLS model were better than in the PLS model. A high correlation between the measured and predicted values was evident in the OPLS model, with a correlation coefficient (R2) greater than 0.99, demonstrating a better fit of the OPLS model in relation to the PLS model which presented a correlation coefficient (R2) less than 0.98. The OPLS model is more robust and has good predictive capacity than the PLS model because it obtained a higher Q 2 value. The excellent results of the application of 1H NMR spectroscopy combined with multivariate regression by OPLS suggest that this analytical methodology is ideal, feasible, efficient and suitable for use by inspection agencies to control the quality of this fuel. |
| وصف الملف: | text/html |
| اللغة: | Portuguese |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f8533f71de9635938c89a9d1badefa1 http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422020000700863 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....5f8533f71de9635938c89a9d1badefa1 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |