Abstract
Abstract A method for the preparation of a standard hydrocarbon gas mixture in a stainless steel cylinder is described. The mixture was made with twelve C5 and c6 hydrocarbons, liquid at room temperature, in synthetic air at a concentration of 0.05 ppm for each compound. Cylinder wall losses were satisfied by conditioning the wall with all of the compounds. Standard volumes of the equilibrium hydrocarbon vapor-air mixtures were calculated with a formula based on Dalton's Law of Partial Pressure and Amagat's Law of Partial Volume. Standard volumes were withdrawn from special flasks and transferred into the cylinder. Gas chromatographic analyses of the hydrocarbons were statistically examined. The standard volume technique, cylinder wall conditioning and analytical results are discussed.
Published Version
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