ISSN:
1618-2650
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary Inductively Coupled Plasma-Atomic Emission Spectrometric and Direct Current Arc-Emission Spectrometric methods have been developed for the determination of rare earths in nuclear grade graphite. The graphite matrix was selectively removed from the analytes by controlled heating in air at 900°C in a muffle furnace. The residual ash containing analytes was dissolved and analysed by ICP-AES for rare earths specially required for assessing the nuclear purity, viz. Dy, Eu, Gd and Sm and for all rare earths, Sc and Y by D.C.arc-AES by photographing their spectra in III order on an 3.4 M Ebert Spectrograph. The recovery of rare earths after ashing was confirmed using γ-activities of141Ce,152–154Eu,153Gd,170Tm and169Yb which was found to be quantitative within experimental error.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01129780
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