Determination of Strontium in Solar Salt after Separation by Extraction with 1-Phenyl-3-methyl-4-stearoyl-5-pyrazolone and Trioctylphosphine Oxide

Abstract

Extraction of calcium(II) and strontium(II) with a mixture of 1-phenyl-3-methyl-4-stearoyl-5-pyrazolone and TOPO in benzene is described. Calcium(II) and strontium(II) are extracted from a citrate medium at pH 9. Strontium(II) is back-extracted from the benzene phase with a citrate solution adjusted to pH 7, and then the amount was determined by atomic absorption spectrometry. This method can be used for the determination of strontium(II) in solar salt samples.