TY - JOUR
T1 - Precise determination of Cr, Mn, Fe, Co and Ni concentration by an isotope dilution-internal standardization method employing high resolution MC-ICP-MS
AU - Makishima, Akio
AU - Yamakawa, Akane
AU - Yamashita, Katsuyuki
AU - Nakamura, Eizo
PY - 2010/6/1
Y1 - 2010/6/1
N2 - A new determination method for Cr, Mn, Fe, Co and Ni in silicate samples by an isotope dilution-internal standardization method (ID-IS)-high resolution (HR)-MC-ICP-MS has been developed. A silicate sample is dissolved into solution, and a Cr-spike solution is added into an aliquot of the sample solution. Then the solution is introduced into HR-MC-ICP-MS without chemical separation. Concentration of Cr is determined by ID, and those of Mn, Fe, Co and Ni are by ID-IS. Matrix effects were examined in detail, and negligible down to a dilution factor (DF; the weight of the sample solution over that of the sample in the solution) of ~3000 for basalt, and ~104 for peridotite and chondrite within an error range of ±1%. ID-IS-HR-MC-ICP-MS showed intermediate precision of ~1% for basalt and chondrite, which is comparable to ID-TIMS for Cr, Fe and Ni, and >10 times better than HR-ICP-MS, suggesting that this method is suitable for precise Mn-Cr and Fe-Ni chronometers.
AB - A new determination method for Cr, Mn, Fe, Co and Ni in silicate samples by an isotope dilution-internal standardization method (ID-IS)-high resolution (HR)-MC-ICP-MS has been developed. A silicate sample is dissolved into solution, and a Cr-spike solution is added into an aliquot of the sample solution. Then the solution is introduced into HR-MC-ICP-MS without chemical separation. Concentration of Cr is determined by ID, and those of Mn, Fe, Co and Ni are by ID-IS. Matrix effects were examined in detail, and negligible down to a dilution factor (DF; the weight of the sample solution over that of the sample in the solution) of ~3000 for basalt, and ~104 for peridotite and chondrite within an error range of ±1%. ID-IS-HR-MC-ICP-MS showed intermediate precision of ~1% for basalt and chondrite, which is comparable to ID-TIMS for Cr, Fe and Ni, and >10 times better than HR-ICP-MS, suggesting that this method is suitable for precise Mn-Cr and Fe-Ni chronometers.
KW - Cr, Mn, Fe, Co, and Ni determination
KW - High resolution MC-ICP-MS
KW - Internal standardization
KW - Isotope dilution
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U2 - 10.1016/j.chemgeo.2010.03.018
DO - 10.1016/j.chemgeo.2010.03.018
M3 - Article
AN - SCOPUS:77953285976
SN - 0009-2541
VL - 274
SP - 82
EP - 86
JO - Chemical Geology
JF - Chemical Geology
IS - 1-2
ER -