Determination of Adulterants in Diesel by Integration of LED Fluorescence Spectra
AUTOR(ES)
Meira, Marilena, Quintella, Cristina M., Ribeiro, Erika M. O., Silva, Humbervânia R. G., Guimarães, Alexandre K., Luna, Saionara, Silva, Weidson L., Brito, Irlane J. de
FONTE
J. Braz. Chem. Soc.
DATA DE PUBLICAÇÃO
2015-07
RESUMO
This paper describes a simple and rapid methodology for determining the content of adulterants in diesel by the integration of fluorescence spectra. The procedure consists of constructing analytical curves using the concentrations of each adulterant in diesel and the relative change in the fluorescence area of each blend with respect to the fluorescence area of the diesel. The results indicated that the proposed method can be used to determine adulterants such as non-transesterified residual cooking oil, kerosene, and turpentine in diesel. The detection limits were 3, 4 and 5% for non-transesterified residual cooking oil, kerosene and turpentine in diesel, respectively. The method was also successfully used to determine the non-transesterified residual cooking oil content in B5 biodiesel-diesel blend (5% biodiesel) in the range of 0-70%, with a limit of detection of 4%.
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