Determination of Rubidium in Biological Materials by Atomic Absorption Spectrophotometry

Abstract

A sensitive and rapid quantitative method employing atomic absorption spectrophotometry was developed for the determination of low concentrations of Rb⁺ in urine, plasma and tissue. The method requires only a single set of Rb⁺ standards, which are applicable for samples containing variable amounts of Na and K. The sensitivity of detection is 0.001 meq/L of Rb⁺.