The role of viscosity in the fluorescence behavior of the diesel/biodiesel blends
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- 作者：Anderson R.L. Caires ; Marisa D. Scherer ; Jos茅 E. De Souza ; Samuel L. Oliveira ; Jean-Claude M'Peko
- 关键词：Diesel ; Biodiesel ; Blend ; Fluorescence ; Viscosity
- 刊名：Renewable Energy
- 出版年：March, 2014
- 年：2014
- 卷：63
- 期：Complete
- 页码：388-391
- 全文大小：571 K
文摘
Recently, the potentiality of fluorescence spectroscopy to be used in the quantification of biodiesel content in diesel/biodiesel blends (DBB) was demonstrated. However, the source of the fluorescence dependence of the DBB with biodiesel concentration remains unanswered. In the present paper, a close analysis of the optical properties of the DBB was performed over a wide composition range. The findings suggest that the alterations in the fluorescence intensity can be accounted for only after taking into account changes in viscosity as well as absorbance, in a model where the fluorophores were considered as molecular rotors.