SPECTROGRAPHIC DETERMINATION OF TRACE AMOUNTS OF RARE EARTHS. I. ANALYSIS OF LANTHANUM AND YTTRIUM BY THE POWDET SIFTING METHOD

Journal Article · Tue Jan 01 04:00:00 EST 1963 · Appl. Spectry

DOI:https://doi.org/10.1366/000370263774415551· OSTI ID:4732863

Radwan, Z; Strzyzewska, B; Mincewski, J

A new simplified method for the determination of trace amounts of rare carths in HCl and sodium versenate solutions was developed. Solutions of the rare earths, La and Y, and of the internal standard (palladium chloride) were evaporated on graphite powder, and mixed with NH/sub 4/NO/sub 3/. Vertically arranged Cu electrodes were used with the sifter electrode as the cathode and a flat surfaced Cu rod as the anode. A generator was used as excitation source, which combines a d-c arc with a Feussner spark. The excitation was effected in an atmosphere of 20% Ar and 80% 0. The detection limit obtained for the two elements, La and Y, as chlorides and as versenates was 0.2 and 0.1 g per sample respectively. The usual range of the method was from 0.5 to 10 g/ml for either solution and element. The average coefficient of variation for the method was 450 deg C in a 13.7%. The mutual interferences of both elements were considered as negligible for the range of concentration investigated. (auth)

• Research Organization: Inst. of Nuclear Research, Warsaw
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-019972
• OSTI ID: 4732863
• Journal Information: Appl. Spectry, Journal Name: Appl. Spectry Vol. Vol: 17
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AMMONIUM COMPOUNDS
ARGON
CHEMISTRY
COPPER
EDTA
ELECTRIC ARCS
ELECTRODES
EVAPORATION
EXCITATION
GRAPHITE
HYDROCHLORIC ACID
LANTHANUM
LANTHANUM CHLORIDES
NITRATES
OXYGEN
POWDERS
QUANTITATIVE ANALYSIS
RARE EARTHS
SOLUTIONS
SPARK CHAMBERS
SPECTROSCOPY
TRACE AMOUNTS
YTTRIUM
YTTRIUM COMPLEXES