TY - JOUR
T1 - Determination of the Isotopic Compositions of Samarium and Gadolinium by Thermal Ionization Mass Spectrometry
AU - Hidaka, H.
AU - Ebihara, M.
AU - Shima, M.
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1995
Y1 - 1995
N2 - Because of the large neutron capture cross sections for 149Sm, 155Gd, and 157Gd, accurate and sensitive isotopic analyses of samarium and gadolinium can be used to investigate natural neutron irradiation exposure. In this paper, chemical separation procedures and mass spectrometric methods for the precise determination of samarium and gadolinium isotopic compositions are described. Isotopic ratios other than 144Sm/152Sm, 152Gd/160Gd, and 154Gd/160Gd for both samarium and gadolinium in commercial reagents, artificially neutron-irradiated reagents, and geological reference rocks are quantified within 0.001% precision at the 95% confidence level. The present method can detect effects caused by timeintegrated neutron flux of 1.3 × 1014 neutrons/cm2 in the environmental samples.
AB - Because of the large neutron capture cross sections for 149Sm, 155Gd, and 157Gd, accurate and sensitive isotopic analyses of samarium and gadolinium can be used to investigate natural neutron irradiation exposure. In this paper, chemical separation procedures and mass spectrometric methods for the precise determination of samarium and gadolinium isotopic compositions are described. Isotopic ratios other than 144Sm/152Sm, 152Gd/160Gd, and 154Gd/160Gd for both samarium and gadolinium in commercial reagents, artificially neutron-irradiated reagents, and geological reference rocks are quantified within 0.001% precision at the 95% confidence level. The present method can detect effects caused by timeintegrated neutron flux of 1.3 × 1014 neutrons/cm2 in the environmental samples.
UR - http://www.scopus.com/inward/record.url?scp=0001198224&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001198224&partnerID=8YFLogxK
U2 - 10.1021/ac00104a021
DO - 10.1021/ac00104a021
M3 - Article
AN - SCOPUS:0001198224
SN - 0003-2700
VL - 67
SP - 1437
EP - 1441
JO - Analytical chemistry
JF - Analytical chemistry
IS - 8
ER -