Application of Wavelet Transforms in Infrared Spectroscopy Data for the Determination of Biodiesel and Vegetable Oil in Biodiesel Blends/Vegetable Oil/Diesel

被引：0
|
作者：
Werlanga, Marcia [1 ]
Panta Pazos, Ruben Edgardo [1 ]
Marder, Luciano [1 ]
de Souza Schneider, Rosana de Cassia [2 ]
Fachini, Daniela [3 ]
Gerbase, Annelise Engel [3 ]
Ferrao, Marco Flores [3 ]
机构：
[1] Univ Santa Cruz do Sul, Sistemas & Processos Ind, BR-96815900 Santa Cruz Do Sul, RS, Brazil
[2] Univ Santa Cruz do Sul, Dept Quim Fis, BR-96815900 Santa Cruz Do Sul, RS, Brazil
[3] Univ Fed Rio Grande do Sul, Dept Quim Inorg, Av Bento Goncalves,9500, BR-91501970 Porto Alegre, RS, Brazil
来源：
ORBITAL-THE ELECTRONIC JOURNAL OF CHEMISTRY | 2013年 / 5卷 / 04期
关键词：
wavelets; infrared; multivariate calibration; biodiesel; adulteration;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Partial least squares (PLS) calibration models were compared for the determination of biodiesel and vegetable oil in different blends using infrared spectra data (FTIR/ATR). Eighty binary and ternary blends containing biodiesel, vegetable oil and diesel were made, 48 were employed to compose the calibration set and 32 for prediction set. Initially the spectral signals of samples containing biodiesel and vegetable oil between 0 and 8%(v/v) were compressed using Discrete Wavelet Transform. The best models with compressed or uncompressed signals were compared, using the interval partial least squares algorithm (iPLS), also identifying which region of the infrared showed better correlation. The results using the compressed data showed similar errors in the determination of the vegetable oil and of the biodiesel in blends. The combination of the regression algorithm iPLS applied to data obtained by FTIR/ATR has shown considerable promise in the development of a simple, rapid and non-destructive method for the determination of adulteration with vegetable oil in biodiesel or biodiesel/diesel blends
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页码：242 / 248
页数：7
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