NDLI: Determination of biodiesel adulteration with raw vegetable oil from ATR-FTIR data using chemometric tools

Content Provider	Scientific Electronic Library Online (SciELO)
Author	Soares, Itânia P Rezende, Thais F Pereira, Rita de Cássia. C Santos, Cláudio G. dos Fortes, Isabel C. P
Abstract	Three different biodiesel sources (cotton, castor and palm) were adulterated with raw soybean oil at concentrations ranging from 1-40% (m/m). These samples were analyzed by infrared spectrometry (MIR) and their spectra were studied at three different spectral ranges: full spectrum (4000-665 cm-1), and the spectral ranges of 1800-1700 cm-1 and 1800-1000 cm-1. To determine the source of biodiesel used in the adulterated system, the data were analyzed by PCA (principal components analysis) spectral analysis tool and the best segregation of the sources was obtained at the range of 4000-665 cm-1. The explained variance was of 99% for the first three components. To quantify the raw soybean oil partial least squares (PLS) tool was applied. The best results were obtained for the spectral range of 1800-1000 cm-1, with values of RMSEP (root mean square error of prediction) varying from 1.10 to 1.47% (m/m).
Related Links	http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-50532011000700005&lng=en&nrm=iso http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532011000700005&lng=en&nrm=iso
Starting Page	1229
Ending Page	1235
Page Count	7
File Format	PDF
ISSN	01035053
DOI	10.1590/S0103-50532011000700005
Journal	Journal of the Brazilian Chemical Society
Issue Number	7
Volume Number	22
Language	English
Publisher	Sociedade Brasileira de Química
Publisher Date	2011-07-01
Publisher Institution	Embrapa Agroenergia Universidade Federal de Minas Gerais Departamento de Química Laboratório de Ensaio de Combustíveis Universidade Federal de Ouro Preto Departamento de Química
Publisher Place	Brazil
Access Restriction	Open
Subject Keyword	Biodiesel adulteration Multivariate calibration ATR-FTIR
Content Type	Text
Resource Type	Article
Subject	Chemistry

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