“…EDTA was used as a precipitant to recover BaSOi from a nitric acid solution of the sulfates. RaE has been separated and purified from HC1 solutions of RaD, its daughters, and Pb, by an electrolysis-paper chromatographic technique by Conte and Muxart (244) • A nickel strip absorbs the RaE, Po, RaD, and Pb from the solution. After dissolving the absorbed materials from the nickel with HNO3 and placing the solution on a paper chromatogram, descending and ascending chromatography is used to separate RaE from the mixture.…”