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Dosage de traces d'hafnium dans l'aluminium par activation neutronique
Author(s) -
Balsenc L.,
Haerdi W.
Publication year - 1969
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19690520846
Subject(s) - chemistry , hafnium , aluminium , neutron activation analysis , sulfuric acid , nuclear chemistry , neutron activation , isotope , radiochemistry , metal , inorganic chemistry , neutron , zirconium , organic chemistry , nuclear physics , physics
Abstract Three methods are proposed for the assay of traces of hafnium in aluminium metal by neutron activation analysis. In the first method, the isotope 179 m Hf ( T = 19 s), produced is counted after anionic resin exchange‐separation in sulfuric acid medium. The two other methods, which are non‐destructive, are based on the formation of 180 m Hf ( T = 5,5 h) and 179 m Hf ( T = 19 s). The latter method comprises an instrumental separation.