Abstract
In this paper, neutron activation analysis was developed for determining hafnium and zirconium in geological materials. The USGS geological standard rocks GSP-1 (granodiorite) and W-1 (di abase). The Brazilian geological standards GB-1 (granite) and BB-1 (basalt) from Instituto de Geociencias da Universidade da Bahia and P-1 a uraniferous rock from Pocos de Caldas, MG, Brazil were analyzed. Hafnium present in these rocks was analyzed by purely instrumental method by irradiating with both thermal and epithermal neutrons from IEA-R1 nuclear research reactor. In the case of zirconium depending on the sample a radiochemical separation was required. {sup 154} Eu and {sup 152} Eu radioisotopes emit gamma rays with energies too close to those emitted by {sup 95} Zr and they cause interferences. (author).
Citation Formats
Lins, J P.
Determination of hafnium and zirconium in geological materials by neutron activation analysis; Determinacao de hafnio e zirconio em materiais geologicos por analise por ativacao com neutrons.
Brazil: N. p.,
1992.
Web.
Lins, J P.
Determination of hafnium and zirconium in geological materials by neutron activation analysis; Determinacao de hafnio e zirconio em materiais geologicos por analise por ativacao com neutrons.
Brazil.
Lins, J P.
1992.
"Determination of hafnium and zirconium in geological materials by neutron activation analysis; Determinacao de hafnio e zirconio em materiais geologicos por analise por ativacao com neutrons."
Brazil.
@misc{etde_10152208,
title = {Determination of hafnium and zirconium in geological materials by neutron activation analysis; Determinacao de hafnio e zirconio em materiais geologicos por analise por ativacao com neutrons}
author = {Lins, J P}
abstractNote = {In this paper, neutron activation analysis was developed for determining hafnium and zirconium in geological materials. The USGS geological standard rocks GSP-1 (granodiorite) and W-1 (di abase). The Brazilian geological standards GB-1 (granite) and BB-1 (basalt) from Instituto de Geociencias da Universidade da Bahia and P-1 a uraniferous rock from Pocos de Caldas, MG, Brazil were analyzed. Hafnium present in these rocks was analyzed by purely instrumental method by irradiating with both thermal and epithermal neutrons from IEA-R1 nuclear research reactor. In the case of zirconium depending on the sample a radiochemical separation was required. {sup 154} Eu and {sup 152} Eu radioisotopes emit gamma rays with energies too close to those emitted by {sup 95} Zr and they cause interferences. (author).}
place = {Brazil}
year = {1992}
month = {Dec}
}
title = {Determination of hafnium and zirconium in geological materials by neutron activation analysis; Determinacao de hafnio e zirconio em materiais geologicos por analise por ativacao com neutrons}
author = {Lins, J P}
abstractNote = {In this paper, neutron activation analysis was developed for determining hafnium and zirconium in geological materials. The USGS geological standard rocks GSP-1 (granodiorite) and W-1 (di abase). The Brazilian geological standards GB-1 (granite) and BB-1 (basalt) from Instituto de Geociencias da Universidade da Bahia and P-1 a uraniferous rock from Pocos de Caldas, MG, Brazil were analyzed. Hafnium present in these rocks was analyzed by purely instrumental method by irradiating with both thermal and epithermal neutrons from IEA-R1 nuclear research reactor. In the case of zirconium depending on the sample a radiochemical separation was required. {sup 154} Eu and {sup 152} Eu radioisotopes emit gamma rays with energies too close to those emitted by {sup 95} Zr and they cause interferences. (author).}
place = {Brazil}
year = {1992}
month = {Dec}
}