TY - JOUR
T1 - High precision measurement of titanium isotope ratios by plasma source mass spectrometry
AU - Zhu, X. K.
AU - Makishima, A.
AU - Guo, Y.
AU - Belshaw, N. S.
AU - O'Nions, R. K.
N1 - Funding Information:
This research was supported by grants from The Leverhulme Trust and the NERC, UK.
PY - 2002/9/15
Y1 - 2002/9/15
N2 - A method using multiple-collector inductively coupled plasma source mass spectrometry for the precise measurement of Ti isotope composition in natural materials has been developed. Instrumental mass discrimination is corrected using a "standard-sample bracketing" approach by expressing the isotope ratios of samples relative to those of the bracketing standard. Variations in 47Ti/46Ti, 48Ti/46Ti, 49Ti/46Ti and 50Ti/46Ti ratios of samples are expressed in ε units which are deviations in parts per 104 from the same isotope ratios of the reference material. The long-term repeatability at the 2 standard deviation level is 0.4, 0.6, 0.7 and 0.8 ε units in terms of 47Ti/46Ti, 48Ti/46Ti, 49Ti/46Ti and 50Ti/46Ti ratio measurements, respectively. The technique reported here makes it possible for the first time that both mass-dependent fractionation and isotope anomalies of Ti isotopes in natural materials can be measured to high precision.
AB - A method using multiple-collector inductively coupled plasma source mass spectrometry for the precise measurement of Ti isotope composition in natural materials has been developed. Instrumental mass discrimination is corrected using a "standard-sample bracketing" approach by expressing the isotope ratios of samples relative to those of the bracketing standard. Variations in 47Ti/46Ti, 48Ti/46Ti, 49Ti/46Ti and 50Ti/46Ti ratios of samples are expressed in ε units which are deviations in parts per 104 from the same isotope ratios of the reference material. The long-term repeatability at the 2 standard deviation level is 0.4, 0.6, 0.7 and 0.8 ε units in terms of 47Ti/46Ti, 48Ti/46Ti, 49Ti/46Ti and 50Ti/46Ti ratio measurements, respectively. The technique reported here makes it possible for the first time that both mass-dependent fractionation and isotope anomalies of Ti isotopes in natural materials can be measured to high precision.
KW - Matrix effects
KW - Plasma source mass spectrometry
KW - Stable isotopes
KW - Titanium isotopes
KW - Transition metal
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U2 - 10.1016/S1387-3806(02)00767-4
DO - 10.1016/S1387-3806(02)00767-4
M3 - Article
AN - SCOPUS:0037105339
SN - 1387-3806
VL - 220
SP - 21
EP - 29
JO - International Journal of Mass Spectrometry
JF - International Journal of Mass Spectrometry
IS - 1
ER -