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The Separation and Determination, by Ion-interaction Chromatography, of Lanthanide and Yttrium Anions, with Elution from Lanthanum to Lutetium

EA. Jones

出版	1990
URL	http://books.google.com.hk/books?id=I__hjgEACAAJ&hl=&source=gbs_api

註釋

Rare-earth elements (REEs) in solution of nitric acid can be individually separated by ion-interaction chromatography. The separation is achieved by isocratic elution using oxalic acid as the complexing agent in the eluant, and tetrabutylammonium hydroxide as the ion-pairing reagent. The separated rare elements are measured spectrophotometrically after post-column reaction with Arsenazo III. By the selection of parameters such as flowrates (eluant and post-column reagent), sample size, and attenuation, the REEs can be determined at levels greater than or equal to 0,5 mg/l with a relative standard deviation (RSD) of +/- 0,01 for the individual REEs at the 10 mg/l level. The order of elution is lanthanum to lutetium, with yttrium eluting immediately after terbium. The time required for the separation of the 14 individual REEs and yttrium is 30 minutes.