Abstract
The extraction chromatographic behavior of zirconium(IV) and hafnium(lV) was investigated using di(1-methylheptyl) methylphosphonate (DM HP) as a stationary phase in the media of hydrochloric acid-ammonium chloride by a batch method. Through a log-log analysis and the IR spectra the extractable species has been proposed to be (DMHPH + ) 2 ZrCl 6 2- and (DMHPH + ) 2 HfCl 6 2- . The quantitative separation of Zr(lV) and Hf(IV) with ratios of 1:1 to 100 : 1 from each other has been achieved by DMHP-extraction chromatography.
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