Determination of Tetraethyllead in Gasoline

Abstract

for the separation of hydrocarbon mixtures. Samples from 2 to 20 ml. were fractionated. The order of displacement was paraffins, monocycloparaffins, and aromatics. Binary mixtures of paraffins and cycloparaffins were separated, and paraffin and cycloparaffin fractions of purity higher than 99% were recovered from naphtha. There was a definite tendency for the separation of mono-and dicycloparaffins, a fraction containing 76% dicycloparaffins having been obtained from a California naphtha distillate. This technique should prove useful to component analysis, and to the preparation of fractions for spectrometer calibration in hydrocarbon type analysis. LITERATURE CITED

Determination of Tetraethyllead in Gasoline by Titration with (Ethylenedinitrilo)tetraacetate

“…DISCUSSION Russ and Reeder. (6) reported that 0.32 p.p.m. of iron makes it impossible to obtain the end point by the Milner and Shipman method (5).…”

“…Russ and Reeder (6) have reported a method designed to eliminate these interferences. Organic matter is destroyed by oxidation with sulfuric and nitric acids.…”