Separation of rare earth elements and strontium from chondritic meteoritesby miniaturized extraction chromatography for elemental and isotopic analyses

A new separation scheme for rare earth elements (REE) and strontium, and it s application to REE determination of chondrites and terrestrial rocks alon g with isotopic analysis of strontium in chondritic meteorites are presente d. The miniaturized extraction chromatography scheme using RE and Sr Resins provide simple and effective methods for the isolation of REE and strontiu m from chondritic meteorites. Chemical yields of up to 90% of the desired e lements and low procedural blanks enable us to use the resins for small-siz e chondritic meteorite samples, weighing one to five milligrams. The techni ques presented here are fully applicable to Rb-Sr isotopic systematics and to REE geochemistry and cosmochemistry. A separation procedure of lead from total rock basalt samples using Sr Resin is also briefly described.