title: Quantification of ethanol in petrol-ethanol blends: use of Reichardt's E(T)(30) dye in introducing a petrol batch independent calibration procedure.
abstract: Petroleum fuels are generally non-polar. The presence of ethanol in the petrol-ethanol fuel blends increases the polarity of the fuel blend. It was observed that absorption spectral shift of the Reichardt's E(T)(30) dye is sensitive to the petrol-ethanol blend polarity. It was also found that E(T)(30) dye has a characteristic λ(max) of absorption in petrol-ethanol blends irrespective of the petrol batch with which blends were prepared. In the present work, a sensitive analytical method for the petrol batch independent quantification of ethanol content in petrol-ethanol blends has been developed.
authors.affiliation: Department of Chemistry, Indian Institute of Technology-Madras, Chennai, Tamilnadu 600036, India.
authors.forename: Keshav
authors.initials: K
authors.lastname: Kumar
authors.forename: Ashok Kumar
authors.initials: AK
authors.lastname: Mishra