Measurement of the free atom fraction of 22 elements in an acetylene-air flame

Abstract

The ratio of the free atom concentration and the total concentration of an element in a fuel-rich premixed acetylene-air flame is measured experimentally for 22 elements. The atom concentration is derived from the integrated absorption measured with a continuous source; the total concentration of an element is calculated from the flow rates of solution and flame gases. Because copper is found to be completely atomized, this element is proposed as a standard of reference for the acetylene-air flame.