Geostandards and Geoanalytical Research

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Determination of Lithium Contents in Silicates by Isotope Dilution ICP‐MS and its Evaluation by Isotope Dilution Thermal Ionisation Mass Spectrometry
Geostandards and Geoanalytical Research - Tập 28 Số 3 - Trang 371-382 - 2004
Takuya Moriguti, Akio Makishima, Eizo Nakamura
A precise and simple method for the determination of lithium concentrations in small amounts of silicate sample was developed by applying isotope dilution‐inductively coupled plasma‐mass spectrometry (ID‐ICP‐MS). Samples plus a Li spike were digested with HF‐HClO4, dried and diluted with HNO3, and measured by ICP‐MS. No matrix effects were observed...... hiện toàn bộ
Determination of Reference Values for NIST SRM 610–617 Glasses Following ISO Guidelines
Geostandards and Geoanalytical Research - Tập 35 Số 4 - Trang 397-429 - 2011
Klaus Peter Jochum, Ulrike Weis, Brigitte Stoll, Giovanna Guidoboni, Qichao Yang, Ingrid Raczek, Dorrit E. Jacob, Andreas Stracke, Karin Birbaum, Daniel A. Frick, Detlef Günther, Jacinta Enzweiler
We present new reference values for the NIST SRM 610–617 glasses following ISO guidelines and the International Association of Geoanalysts’ protocol. Uncertainties at the 95% confidence level (CL) have been determined for bulk‐ and micro‐analytical purposes. In contrast to former compilation procedures, this approach delivers data that consider present‐day requirements of data quality. New...... hiện toàn bộ
Production and Certification of a Unique Set of Isotope and Delta Reference Materials for Boron Isotope Determination in Geochemical, Environmental and Industrial Materials
Geostandards and Geoanalytical Research - Tập 36 Số 2 - Trang 161-175 - 2012
Jochen Vogl, Martin Rösner
Isotopic reference materials are essential to enable reliable and comparable isotope data. In the case of boron only a very limited number of such materials is available, thus preventing adequate quality control of measurement results and validation of analytical procedures. To address this situation a unique set of two boron isotope reference materials (ERM‐AE102a and ‐AE104a) and three o...... hiện toàn bộ
MC‐ICP‐MS Isotope Measurements with Direct Injection Nebulisation (d‐DIHEN): Optimisation and Application to Boron in Seawater and Carbonate Samples
Geostandards and Geoanalytical Research - Tập 35 Số 1 - Trang 75-88 - 2011
P. Bonville, Julien Bouchez, Guillaume Paris
We report here an optimisation of the demountable direct injection high efficiency nebuliser (d‐DIHEN) for isotopic measurements with a Neptune (ThermoFisher Scientific, Bremen, Germany) multi‐collector inductively coupled plasma‐mass spectrometer (MC‐ICP‐MS) and describe a method for boron isotopic ratio determination. With direct injection nebulisation 100% of the analyte was introduced ...... hiện toàn bộ
NanoSIMS: Technical Aspects and Applications in Cosmochemistry and Biological Geochemistry
Geostandards and Geoanalytical Research - Tập 37 Số 2 - Trang 111-154 - 2013
P. Höppe, Sharon Cohen, Anders Meibom
The NanoSIMS ion probe is a new‐generation SIMS instrument, characterised by superior spatial resolution, high sensitivity and multi‐collection capability. Isotope studies of certain elements can be conduct...... hiện toàn bộ
Calcium Isotopic Fractionation and Compositions of Geochemical Reference Materials
Geostandards and Geoanalytical Research - Tập 41 Số 4 - Trang 675-688 - 2017
Fang Liu, Hong Zhu, Xin Li, Gui Q. Wang, Zhao F. Zhang
High‐precision calcium isotopic compositions of a set of geological reference materials from the IAG (OU‐6), ANRT (UB‐N), ... hiện toàn bộ
Zircon M257 ‐ a Homogeneous Natural Reference Material for the Ion Microprobe U‐Pb Analysis of Zircon
Geostandards and Geoanalytical Research - Tập 32 Số 3 - Trang 247-265 - 2008
Lutz Nasdala, Wolfgang Hofmeister, Nicholas Norberg, J. Martinson, Fernando Corfú, Wolfgang Dörr, Sandra L. Kamo, Allen Kennedy, Andreas Kronz, Peter W. Reiners, Dirk Frei, Jan Košler, Yusheng Wan, Jens Götze, Tobias Häger, Alfred Kröner, John W. Valley
We introduce and propose zircon M257 as a future reference material for the determination of zircon U‐Pb ages by means of secondary ion mass spectrometry. This light brownish, flawless, cut gemstone specimen from Sri Lanka weighed 5.14 g (25.7 carats). Zircon M257 has TIMS‐determined, mean isotopic ratios (2s uncertainties) of 0.09100 ± 0.00003 for 206pb/238<...... hiện toàn bộ
A Preliminary Appraisal of Seven Natural Zircon Reference Materials for In Situ Hf Isotope Determination
Geostandards and Geoanalytical Research - Tập 29 Số 2 - Trang 183-195 - 2005
Jon Woodhead, Janet Hergt
There is a growing need for new zircon reference materials for in situ Hf‐isotope analysis by laser ablation‐multicollector inductively coupled plasma‐mass spectrometry (LA‐MC‐ICP‐MS). In this contribution we document the results of a preliminary investigation of seven natural zircons, conducted in order to test their suitability in this regard. Solution MC‐ICP‐MS data on separated Lu and ...... hiện toàn bộ
Accurate U‐Pb Age and Trace Element Determinations of Zircon by Laser Ablation‐Inductively Coupled Plasma‐Mass Spectrometry
Geostandards and Geoanalytical Research - Tập 28 Số 3 - Trang 353-370 - 2004
Honglin Yuan, Shan Gao, Xiaoming Liu, Huiming Li, Detlef Günther, Fu‐Yuan Wu
Various zircons of Proterozoic to Oligocene ages (1060‐31 Ma) were analysed by laser ablation‐inductively coupled plasma‐mass spectrometry. Calibration was performed using Harvard reference zircon 91500 or Australian National University reference zircon TEMORA 1 as external calibrant. The results agree with those obtained by SIMS within 2s error. Twenty‐four trace and rare earth elements (...... hiện toàn bộ
Tiêu chuẩn do cộng đồng xác định cho địa chất tuổi U‐(Th‐)Pb bằng phương pháp LA‐ICP‐MS – Tầng bậc không chắc chắn, Diễn giải tuổi và Báo cáo dữ liệu Dịch bởi AI
Geostandards and Geoanalytical Research - Tập 40 Số 3 - Trang 311-332 - 2016
Matthew Horstwood, Jan Košler, George E. Gehrels, Simon E. Jackson, Noah M. McLean, Chad Paton, Suzanne Y. O’Reilly, Keith Sircombe, Paul Sylvester, Pieter Vermeesch, James F. Bowring, Daniel J. Condon, Blair Schoene
Cộng đồng quốc tế về địa chất tuổi U‐(Th‐)Pb bằng phương pháp LA‐ICP‐MS đã xác định các tiêu chuẩn mới cho việc xác định tuổi U‐(Th‐)Pb. Một quy trình làm việc mới xác định sự truyền đạt phù hợp về các khôn...... hiện toàn bộ
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