The effect of instrumental mass bias on δ11B measurements:: a comparison between thermal ionisation mass spectrometry and multiple-collector ICP-MS

被引：30

作者：

Aggarwal, JK

Mezger, K

Pernicka, E

Meixner, A

机构：

[1] Univ Munster, Inst Mineral, D-48149 Munster, Germany

[2] Tech Univ Berg Akad Freiberg, Inst Archaomet, D-09596 Freiberg, Germany

[3] Geoforschungszentrum Potsdam, D-14473 Potsdam, Germany

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 2004年 / 232卷 / 03期

关键词：

mass bias; multiple-collector ICP-MS; TIMS;

D O I：

10.1016/j.ijms.2004.01.016

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 series of synthetic samples which span the range of known delta(11)B values have been measured by thermal ion mass spectrometry (positive and negative ion) and by multiple-collector ICP-MS (Axiom and IsoProbe) in order to assess the effects of mass bias on delta(11)B values. The IsoProbe shows the highest mass bias, but yields delta(11)B values identical to those obtained with the Axiom and by TIMS measurements, indicating that mass bias has no detectable effect on delta(11)B values. Measurements carried out by multiple-collector ICP-MS yield higher precision than TIMS measurements. Typically multiple-collector ICP-MS measurements offer a 50% improvement in precision over positive ion TIMS and nearly one order of magnitude better than that for negative ion TIMS. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：259 / 263

页数：5

共 13 条

[1] Precise and accurate determination of boron isotope ratios by multiple collector ICP-MS: origin of boron in the Ngawha geothermal system, New Zealand [J].