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Discrimination and Quantification of Moroccan Gasoline Adulteration with Diesel Using Fourier Transform Infrared Spectroscopy and Chemometric Tools
In this work, transform-infrared spectroscopy (FTIR) was associated with chemometric tools, especially principal component analysis (PCA) and partial least squares regression (PLSR), to discriminate and quantify gasoline adulteration with diesel. The method is composed of a total of 100 mixtures wer...
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Published in: | Journal of AOAC International 2019-05, Vol.102 (3), p.966-970 |
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container_title | Journal of AOAC International |
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creator | Barra, Issam Mansouri, Mohammed Alaoui Bousrabat, Mohammed Cherrah, Yahia Bouklouze, Abdelaziz Kharbach, Mourad |
description | In this work, transform-infrared spectroscopy (FTIR) was associated with chemometric tools, especially principal component analysis (PCA) and partial least squares regression (PLSR), to discriminate and quantify gasoline adulteration with diesel. The method is composed of a total of 100 mixtures were prepared, and then FTIR fingerprints were recorded for all samples. PCA was used to verify that mixtures can be distinguished from pure products and to check that there are no outliers. As a result of using just PC1 and PC2, more than 98% of the general variability was explained. The PLSR model based on infrared spectra has shown its capabilities to be suitable for predicting gasoline adulteration in the concentration range of 0 to 98% (w/w), with a high significant coefficient of determination (
² = 99.25%) and an acceptable calibration and prediction errors (root mean squared error of calibration = 0.63 and root mean square of external validation and/or prediction = 0.69). |
doi_str_mv | 10.5740/jaoacint.18-0179 |
format | article |
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subjects | Backup software Chemometrics Composition Diesel fuels Fourier transform infrared spectroscopy Gasoline Gasoline - analysis Infrared spectroscopy Least-Squares Analysis Measurement Methods Morocco Principal Component Analysis Spectroscopy Spectroscopy, Fourier Transform Infrared - methods Testing |
title | Discrimination and Quantification of Moroccan Gasoline Adulteration with Diesel Using Fourier Transform Infrared Spectroscopy and Chemometric Tools |
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