Effect of Decolorization on the Determination of ETBE Contents in Gasoline by Liquid Scintillation Counting

Abstract

We investigated the determination of ethyl tert-butyl ether(ETBE) contents in red simulated gasoline containing 10% or 25% of ETBE by liquid scintillation counting(LSC). The ETBE contents were determined precisely after removal of red fuel dye using activated clay at the weight ratios of clay/gasoline were 0.1-0.2(w/w). Reduced amount of activated clay caused incomplete removal of dye, resulting in a decrease of counting efficiencies of LSC. When the weight ratios of clay exceeded 0.2, significant decreases in ETBE contents were observed.