TY - JOUR
T1 - Determination of iridium and gold in rock samples by using pre-concentration neutron activation analysis
AU - Tanaka, N.
AU - Oura, Y.
AU - Ebihara, M.
N1 - Funding Information:
We are grateful to the Reactor Committee of the University of Tokyo for the cooperative use of the reactor facilities for NAA at JAEA. We also thank N. SHIRAI for his help and advice for this study. This study was partly supported by a Grant-in-Aids defrayed by the Ministry of Education, Culture, Science and Technology (No. 19340169 to ME).
PY - 2008/12
Y1 - 2008/12
N2 - Nickel sulfide (NiS) fire assay was used for the pre-concentration of Ir and Au in rock samples. The beads obtained after fire assay were irradiated directly with neutrons to determine Ir and Au. To suppress the reaction of 58Ni(n,p)58Co, the fire assay was carried out by using a small amount of Ni (0.0625 g) and the NiS bead samples were irradiated by neutrons with high Cd ratios. Analytical results of Ir and Au for rock samples were close to literature values, confirming that our procedure of INAA with pre-concentration can be applied to rock samples for the determination of ppb to sub-ppb level of Ir and Au.
AB - Nickel sulfide (NiS) fire assay was used for the pre-concentration of Ir and Au in rock samples. The beads obtained after fire assay were irradiated directly with neutrons to determine Ir and Au. To suppress the reaction of 58Ni(n,p)58Co, the fire assay was carried out by using a small amount of Ni (0.0625 g) and the NiS bead samples were irradiated by neutrons with high Cd ratios. Analytical results of Ir and Au for rock samples were close to literature values, confirming that our procedure of INAA with pre-concentration can be applied to rock samples for the determination of ppb to sub-ppb level of Ir and Au.
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U2 - 10.1007/s10967-008-1102-z
DO - 10.1007/s10967-008-1102-z
M3 - Article
AN - SCOPUS:57049115047
SN - 0236-5731
VL - 278
SP - 603
EP - 606
JO - Journal of Radioanalytical and Nuclear Chemistry
JF - Journal of Radioanalytical and Nuclear Chemistry
IS - 3
ER -
