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U.S. Department of Energy
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SPECTROGRAPHIC DETERMINATION OF TRACE AMOUNTS OF RARE EARTHS

Technical Report ·
OSTI ID:4062516
A new simplified method for the determination of trace amounts of rare eanths in HCl and EDTA-Na solutiore was developed. The solutions of rare earths lanthanum and yttrium and of the internal standard (palladium chloride) were evaporated on graphite powder and the sample was mixed with NH/sub 4/NO/sub 3/. Vertically arranged copper electrodes were used: the sifter electrode as the cathode and a flatsunfaced copper rod as the anode. The excitation source was a generator that combined a d-c arc with a Feussner spark. The excitution was effected in an atmosphere of 20% argon and 80% oxygen. The detection limit obtained for the two elements lanthanum and yttrium as chlorides and as versenates was 2.10/sup -1/ and 1.10/sup -1/ mu g per sample, respectively. (auth)
Research Organization:
Polish Academy of Sciences. Inst. of Nuclear Research. Warsaw
NSA Number:
NSA-15-012841
OSTI ID:
4062516
Report Number(s):
NP-9725; PAN-180/VII
Country of Publication:
Country unknown/Code not available
Language:
English