Atom probe tomography analysis of the reference zircon gj-1: An interlaboratory study

被引：29

作者：

Exertier, F. ^{[1
,2
]}

La Fontaine, A. ^{[1
,2
]}

Corcoran, C. ^{[3
,4
]}

Piazolo, S. ^{[3
,4
,5
]}

Belousova, E. ^{[5
]}

Peng, Z. ^{[6
]}

Gault, B. ^{[6
]}

Saxey, D. W. ^{[7
]}

Fougerouse, D. ^{[7
,8
]}

Reddy, S. M. ^{[7
,8
]}

Pedrazzini, S. ^{[9
]}

Bagot, P. A. J. ^{[10
]}

Moody, M. P. ^{[10
]}

Langelier, B. ^{[11
]}

Moser, D. E. ^{[12
]}

Botton, G. A. ^{[11
]}

Vogel, F. ^{[13
]}

Thompson, G. B. ^{[13
]}

Blanchard, P. T. ^{[14
]}

Chiaramonti, A. N. ^{[14
]}

Reinhard, D. A. ^{[15
]}

Rice, K. P. ^{[15
]}

Schreiber, D. K. ^{[16
]}

Kruska, K. ^{[16
]}

Wang, J. ^{[16
]}

Gairney, J. M. ^{[1
,2
]}

机构：

[1] Univ Sydney, Sch Aerosp Mech Mechatron Engn, Sydney, NSW 2006, Australia

[2] Univ Sydney, Australian Ctr Microscopy & Microanal, Sydney, NSW 2006, Australia

[3] Macquarie Univ, Australian Res Council, Sydney, NSW 2109, Australia

[4] Macquarie Univ, Ctr Excellence Core Crust Fluid Systerns GEMOC, Dept Earth & Planetary Sci, Sydney, NSW 2109, Australia

[5] Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England

[6] Max Planck Inst Eisenforsch GmbH, Max Planck Str 1, D-40237 Dusseldorf, Germany

[7] Curtin Univ, John Laeter Ctr, Adv Resource Characterisat Facil, Geosci Atom Probe, Bentley, WA 6102, Australia

[8] Curtin Univ, Sch Earth & Planetary Sci, Perth, WA 6102, Australia

[9] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0F3, England

[10] Univ Oxford, Dept Mat Sci, Parks Rd, Oxford OX1 3PH, England

[11] McMaster Univ, Canadian Ctr Electron Microscopy, Dept Mat Sci & Engn, 1280 Main St West, Hamilton, ON L8S 4M1, Canada

[12] Univ Western Ontario, Dept Earth Sci, 1151 Richmond St, London, ON N6A 5B7, Canada

[13] Univ Alabama, Dept Met & Mat Engn, Tuscaloosa, AL 35401 USA

[14] US Dept Commerce, Natl Inst Stand & Technol, Boulder, CO 80305 USA

[15] CAMECA Instruments Inc, 5470 Nobel Dr, Madison, WI 53711 USA

[16] Pacific Northwest Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA

来源：

CHEMICAL GEOLOGY | 2018年 / 495卷

基金：

英国工程与自然科学研究理事会;

关键词：

Interlaboratory; Round robin; Atom probe tomography; Reference zircon GJ-1; Nanoscale composition; Analysis parameters; PLASMA-MASS SPECTROMETRY; PLASTIC-DEFORMATION; DIFFUSION; PB; OPTIMIZATION; MICROSTRUCTURES; RECONSTRUCTION; CONSTRAINTS; TEMPERATURE; MECHANISMS;

D O I：

10.1016/j.chemgeo.2018.07.031

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

In recent years, atom probe tomography (APT) has been increasingly used to study minerals, and in particular the mineral zircon. Zircon (ZrSiO4) is ideally suited for geochronology by utilising the U-Th-Pb isotope systems, and trace element compositions are also widely used to constrain petrogenetic processes. However, while standard geoanalytical techniques provide information at micrometer scale lengths, the unique combination of chemical/isotopic sensitivity and spatial resolution of APT allows compositional and textural measurements at the nanoscale. This interlaboratory study aims to define the reproducibility of APT data across research facilities and assess the role of different aspects of the atom probe workflow on reproducibility. This is essential to allow correct evaluation of APT results and full utilization of this emerging technique within the geoscience community. In this study, nine samples from the same homogeneous, GJ-1/87 zircon reference grain were sent to nine APT institutes in Germany, the UK, USA, Canada and Australia. After preparing the sample out of a selectioned slab, each institute conducted three different rounds of APT analyses: using (i) unconstrained analysis parameters, (ii) pre-defined analysis parameters, and (iii) interpreting and quantifying a provided dataset. Data such as the measured elemental composition, acquisition parameters, or mass spectrum peak identifications, were recorded and analyzed. We observe a significant variation in the measured composition across this interlaboratory study as well as the number of trace elements identified. These differences are thought to directly result from the user's choice of atom probe data analysis parameters. The type of instrument does not seem to be a critical factor. Consequently, comparison of absolute trace element concentrations on zircon using APT between laboratories is only valid if the same workflow has been ensured.

引用

页码：27 / 35

页数：9

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