On the Validity of the Vapor-Deposited Thin Film of Barium Chloride for the Detection of Sulfate in Individual Atmospheric Particles

Abstract

An electron-probe X-ray microanalysis of the reaction rings of atmospheric particles on the thin film of barium chloride was carried out to detect the distribution of sulfur and barium. The purpose of the experiment was to establish the validity of the vapor-deposited thin film method of barium chloride for the detection of soluble sulfate in individual atmospheric particles.
The results indicate that the reaction rings on the thin film of barium chloride are composed of barium sulfate and hence validate the value of the method for atmospheric samples.