Based on the equilibrium solubility of rubidium of chloride-water binary system and rubidium chloride-hydrochloris acid-water ternary system,a very simple and practical method for the preparation of high purity rubidium chloride was proposed.The purity of this rubidium chloride came up to 99.99%.In the meantime,a rapid and sensitive analytical procedure was set up by using flame atomic absorption spectrometry(AAS),which could be used to monitor the quality of the products whenever necessary.
