High precision measurement of titanium isotope ratios by plasma source mass spectrometry

被引：73

作者：

Zhu, XK

Makishima, A

Guo, Y

Belshaw, NS

O'Nions, RK

机构：

[1] Univ Oxford, Dept Earth Sci, Oxford OX1 3PR, England

[2] Chinese Acad Geol Sci, Lab Isotope Geochem& Cosmochem, Beijing 100037, Peoples R China

[3] Okayama Univ, Inst Study Earths Interior, Pheasant Mem Lab Geochem & Cosmochem, Tottori 6820193, Japan

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 2002年 / 220卷 / 01期

基金：

英国自然环境研究理事会;

关键词：

titanium isotopes; plasma source mass spectrometry; stable isotopes; matrix effects; transition metal;

D O I：

10.1016/S1387-3806(02)00767-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

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(47)Ti/Ti-46, Ti-48/Ti-46, Ti-49/Ti-46 and Ti-50/Ti-46 ratios of samples are expressed in epsilon units which are deviations in parts per 10(4) 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 epsilon units in terms of Ti-47/Ti-46, Ti-48/Ti-46, Ti-49/Ti-46 and Ti-50/Ti-46 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. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：21 / 29

页数：9

共 21 条

[1] Precise determination of mass-dependent variations in the isotopic composition of molybdenum using MC-ICPMS [J].

Anbar, AD ;

Knab, KA ;

Barling, J .

ANALYTICAL CHEMISTRY, 2001, 73 (07) :1425-1431

[2] A new variable dispersion double-focusing plasma mass spectrometer with performance illustrated for Pb isotopes [J].

Belshaw, NS ;

Freedman, PA ;

O'Nions, RK ;

Frank, M ;

Guo, Y .

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, 1998, 181 :51-58

[3] High precision measurement of iron isotopes by plasma source mass spectrometry [J].

Belshaw, NS ;

Zhu, XK ;

Guo, Y ;

O'Nions, RK .

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, 2000, 197 :191-195

[4]

CLAYTON RN, 1993, ANNU REV EARTH PL SC, V21, P115, DOI 10.1146/annurev.ea.21.050193.000555

[5]

Criss R. E., 1999, Priniciples of stable isotope distribution, DOI [10.1093/oso/9780195117752.001.0001, DOI 10.1093/OSO/9780195117752.001.0001]

[6] SIMS analysis of oxygen isotopes: Matrix effects in complex minerals and glasses [J].

Eiler, JM ;

Graham, C ;

Valley, JW .

CHEMICAL GEOLOGY, 1997, 138 (3-4) :221-244

[7] CONDENSATION IN PRIMITIVE SOLAR NEBULA [J].

GROSSMAN, L .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1972, 36 (05) :597-&

[8] TITANIUM ISOTOPIC ANOMALIES IN HIBONITES FROM THE MURCHISON CARBONACEOUS CHONDRITE [J].

IRELAND, TR ;

COMPSTON, W ;

HEYDEGGER, HR .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1985, 49 (09) :1989-1993

[9]

MAKISHIMA A, IN PRESS ANAL ATOM S

[10] Precise analysis of copper and zinc isotopic compositions by plasma-source mass spectrometry [J].

Maréchal, CN ;

Télouk, P ;

Albarède, F .

CHEMICAL GEOLOGY, 1999, 156 (1-4) :251-273

← 1 2 3 →