The role of viscosity in the fluorescence behavior of the diesel/biodiesel blends |
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| Affiliation: | 1. Grupo de Óptica Aplicada, Faculdade de Ciências Exatas e Tecnologia, Universidade Federal da Grande Dourados, CP 364, 79804-970 Dourados, MS, Brazil;2. Grupo de Óptica e Fotônica, Universidade Federal de Mato Grosso do Sul, CP 549, 79070-900 Campo Grande, MS, Brazil;3. Grupo Crescimento de Cristais e Materiais Cerâmicos, Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil;1. Programa de Pós-Graduação em Recursos Naturais, Universidade Estadual de Mato Grosso do Sul, C.P. 351, Dourados, MS, Brazil;2. Universidade Estadual Paulista, Departamento de Física e Química, Av. Brasil 56, 15385-000, Ilha Solteira, SP, Brazil;1. Koç University, School of Medicine, Department of Radiology, Turkey;2. American Hospital, Department of Radiology, Turkey;3. American Hospital, Department of Pathology, Turkey;4. Acibadem Health Group, Department of Pathology, Turkey;5. Koç University, School of Medicine, Department of General Surgery, Turkey |
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| Abstract: | 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. |
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| Keywords: | Diesel Biodiesel Blend Fluorescence Viscosity |
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