Geostandards and Geoanalytical Research

Cover image for Vol. 41 Issue 1

Early View (Online Version of Record published before inclusion in an issue)

Edited By: Thomas C. Meisel, Jacinta Enzweiler, Mary F. Horan, Kathryn L. Linge, Christophe R. Quétel and Paul J. Sylvester

Impact Factor: 2.885

ISI Journal Citation Reports © Ranking: 2015: 20/81 (Geochemistry & Geophysics)

Online ISSN: 1751-908X

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  1. 1 - 18
  1. Original Articles

    1. Determination of the Tin Stable Isotopic Composition in Tin-bearing Metals and Minerals by MC-ICP-MS

      Gerhard Brügmann, Daniel Berger and Ernst Pernicka

      Version of Record online: 29 MAR 2017 | DOI: 10.1111/ggr.12166

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      Key Points

      • Mass-dependent tin isotope variations in tin-bearing metals and minerals determined by MC-ICP-MS.
      • A promising tool to distinguish tin ore deposit and to trace the tin source of archaeological metal artefacts.
      • First tin isotope data for metallic reference materials are provided.
    2. U-Pb Geochronological and Thermochronological Time–Temperature Constraints of 40Ar/39Ar Hornblende Reference Material HB3gr

      Terrence Blackburn, Noah McLean and Samuel A. Bowring

      Version of Record online: 19 MAR 2017 | DOI: 10.1111/ggr.12165

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      Key Points

      • Zircon and titanite from the HB3gr 40Ar/39Ar hornblende reference material were dated by ID-TIMS.
      • Zircon U-Pb data indicate initial crystallization at 1090.10 ± 0.16 Ma, a date 1.7% older than the accepted K-Ar date (1072 ± 11 Ma) for HB3gr.
      • Single grain titanite analyses ranged between 1082 ± 0.75 and 1086 ± 0.81 Ma, and with 40Ar/39Ar hornblende dates are interpreted to record pluton cooling at 30--50 °C Ma-1.
    3. An Improved Procedure for the Determination of Ferrous Iron Mass Fraction in Silicate Rocks Using a Schlenk Line-Based Digestion Apparatus to Exclude Oxygen

      Dingshuai Xue, Hongyue Wang, Yanhong Liu, Liewen Xie and Ping Shen

      Version of Record online: 28 FEB 2017 | DOI: 10.1111/ggr.12164

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      Key Points

      • Direct titration method for the determination of ferrous iron mass fraction in silicate rocks was improved.
      • Schlenk line was introduced to expel air to prevent oxidation during sample digestion and titration.
      • Meets the need for rapid and precise determination of ferrous iron in silicate rocks with high throughput.
    4. Enhanced Oxygen Isotope Determination in Uranium Oxides Using BrF5 Fluorination

      Malorie Dierick, Éric Pili, Nelly Assayag and Pierre Agrinier

      Version of Record online: 2 FEB 2017 | DOI: 10.1111/ggr.12160

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      Key Points

      • First use of the conventional BrF5 fluorination method on industrial uranium oxides (diuranates, UO3, U3O8 and UO2) for δ18O measurements.
      • Wide range of measured δ18O values; seems to be linked to the redox state of uranium oxides.
      • Comparison of conventional BrF5 fluorination and laser-assisted methods.
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      Nitrile, Latex, Neoprene and Vinyl Gloves: A Primary Source of Contamination for Trace Element and Zn Isotopic Analyses in Geological and Biological Samples

      Marion Garçon, Lucie Sauzéat, Richard W. Carlson, Steven B. Shirey, Mélanie Simon, Vincent Balter and Maud Boyet

      Version of Record online: 29 JAN 2017 | DOI: 10.1111/ggr.12161

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      Key Points

      • All gloves present a high risk of contamination for many geologically and biologically important trace elements.
      • Vinyl gloves are less enriched in trace elements than nitrile, latex and neoprene gloves.
      • Glove contamination can significantly shift δ66Zn of geological and biological samples.
    6. Quantifying Heterogeneity of Small Test Portion Masses of Geological Reference Materials by Portable XRF Spectrometry: Implications for Uncertainty of Reference Values

      Peter D. Rostron and Michael H. Ramsey

      Version of Record online: 29 JAN 2017 | DOI: 10.1111/ggr.12162

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      Key Points

      • Uncertainty from analyte heterogeneity, and mass of test-portion, was estimated for PXRF measurements on silicate RMs.
      • Heterogeneity was generally higher for elements with low test-portion mass (and atomic number), those present in accessory minerals, and for smaller X-ray beam sizes.
      • Revised uncertainties on reference values for PXRF measurements are proposed.
    7. Accurate and Precise Silicon Isotope Analysis of Sulfur- and Iron-Rich Samples by MC-ICP-MS

      Xinyang Chen, Thomas J. Lapen and Henry S. Chafetz

      Version of Record online: 20 JAN 2017 | DOI: 10.1111/ggr.12158

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      Key Points

      • Presence of sulfur in sample matrix causes significant shifts in Si isotope measurement.
      • Fe hydroxide precipitation during sample preparation fractionates Si isotopes and compromises the accuracy of Si isotope analysis.
      • The combination of sulfur doping and pH adjustment provides efficient and reliable protocol for Si isotope determination of S- and Fe-rich samples.
    8. Measurements of Rare Earth Element and Other Element Mass Fractions in Environmental Reference Materials (NIST SRM 1646a, NIST SRM 1400, IAEA-395 and IAEA-450) by INAA, ICP-AES and ICP-MS

      Vu Dong Cao, Raymond Sucgang, Thien Quang Tran, Doanh Van Ho, Naoki Shirai and Mitsuru Ebihara

      Version of Record online: 6 JAN 2017 | DOI: 10.1111/ggr.12159

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      Key Points

      • Element mass fractions in NIST SRM 1646a, NIST SRM 1400, IAEA-395 and IAEA-450 were determined by INAA, ICP-AES and ICP-MS.
      • Accuracy and repeatability of our data were evaluated based on zeta-score and Horwitz ratio, respectively.
      • Sample heterogeneity was evaluated by using smaller test portion sizes than the recommended minimum mass.
    9. Rare Earth Element Determination in Olivine by Laser Ablation-Quadrupole-ICP-MS: An Analytical Strategy and Applications

      Clare V. Stead, Emma L. Tomlinson, Balz S. Kamber, Michael G. Babechuk and Cora A. McKenna

      Version of Record online: 21 DEC 2016 | DOI: 10.1111/ggr.12157

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      Key Points

      • A new analytical strategy for the measurement of REE in olivine by laser ablation.
      • Data crosschecked against solution analysis.
      • Application of the new strategy to investigate the REE contents of olivine from magmatic, metamorphic, mantle and meteorite samples.
    10. Mass-Independent and Mass-Dependent Ca Isotopic Compositions of Thirteen Geological Reference Materials Measured by Thermal Ionisation Mass Spectrometry

      Yongsheng He, Yang Wang, Chuanwei Zhu, Shichun Huang and Shuguang Li

      Version of Record online: 20 DEC 2016 | DOI: 10.1111/ggr.12153

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      Key Points

      • Mass-independent and mass-dependent Ca isotopic compositions of thirteen geological reference materials are reported.
      • Ca isotope fractionation is either insignificant or not systematic during magma differentiation.
      • The combined data indicate a potential role for garnet in producing low δ44/42Ca magmas.
    11. Application of Laser-Induced Breakdown Spectroscopy and Hyperspectral Images for Direct Evaluation of Chemical Elemental Profiles of Coprolites

      Marco Aurélio Sperança, Francisco Wendel Batista de Aquino, Marcelo Adorna Fernandes, Alejandro Lopez-Castillo, Renato Lajarim Carneiro and Edenir Rodrigues Pereira-Filho

      Version of Record online: 11 DEC 2016 | DOI: 10.1111/ggr.12155

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      Key Points

      • Fast and direct solid sample inspection using LIBS for coprolite analysis.
      • Combination of chemometric tools, hypespectral images and emission line data.
      • Score maps provide a chemical mapping of the samples studied.
    12. Development of a Matrix-Matched Sphalerite Reference Material (MUL-ZnS-1) for Calibration of In Situ Trace Element Measurements by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry

      Peter Onuk, Frank Melcher, Regina Mertz-Kraus, Hans-Eike Gäbler and Simon Goldmann

      Version of Record online: 9 DEC 2016 | DOI: 10.1111/ggr.12154

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      Key Points

      • Matrix-matched sphalerite (ZnS) reference material containing 21 elements.
      • Element mass fraction was determined by solution ICP-MS, ICP-OES and AAS, homogeneity confirmed by LA-ICP-MS.
      • The surface of the reference material can be refurbished by polishing.
    13. Production and Certification of the Reference Material GSB 04-3258-2015 as a 143Nd/144Nd Isotope Ratio Reference

      Jin Li, Suo-han Tang, Xiang-kun Zhu and Chen-xu Pan

      Version of Record online: 22 NOV 2016 | DOI: 10.1111/ggr.12151

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      Key Points

      • The reference value of GSB 04-3258-2015 was determined by an interlaboratory comparison of results from eleven participating laboratories using MC-TIMS or MC-ICP-MS.
      • The 143Nd/144Nd isotope ratio value for GSB 04-3258-2015 is 0.512438, with a combined expanded uncertainty (k = 2) of 5 × 10−6.
      • GSB 04-3258-2015 shows sufficient homogeneity and stability for use as an international isotopic reference material.
    14. Method Development and Optimisation of Sodium Peroxide Sintering for Geological Samples

      Syed Nadeem Hussain Bokhari and Thomas C. Meisel

      Version of Record online: 31 OCT 2016 | DOI: 10.1111/ggr.12149

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      Key Points

      • Complete HF-free digestion of 12 geological samples in 3 hr ready for measurement with ICP-MS.
      • Matrix matched calibration with geological reference materials.
      • SiO2 mass fractions are also quantifiable with ICP-MS from the same solution together with 49 other analytes.
    15. Biotite Reference Materials for Secondary Ion Mass Spectrometry 18O/16O Measurements

      Guillaume Siron, Lukas Baumgartner, Anne-Sophie Bouvier, Benita Putlitz and Torsten Vennemann

      Version of Record online: 20 OCT 2016 | DOI: 10.1111/ggr.12148

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      Key Points

      • Matrix effect for biotite with low fluorine content (e.g., below 0.2% m/m oxides) can be modelled with XMg only between 0.3 and 0.9.
      • Matrix effect for biotite with variable F content require a multivariate correction scheme using XMg and XF as variables.
      • No crystal orientation effect was found at the level of precision of 0.3‰ (2s).
    16. Investigating the Influence of Non-Spectral Matrix Effects in the Determination of Twenty-Two Trace Elements in Rock Samples by ICP-QMS

      Tetsuya Yokoyama, Yuichiro Nagai, Yu Hinohara and Tomohiko Mori

      Version of Record online: 12 OCT 2016 | DOI: 10.1111/ggr.12147

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      Key Points

      • The influence of non-spectral matrix effects on the determination of twenty-two trace elements in rock samples with ICP-MS was investigated using three types of synthetic solutions mimicking the compositions of basalt, peridotite and dolomite.
      • The extent of sensitivity suppression became more significant for solutions with smaller dilution factor, which was not constant across different elements in a single solution but displayed general dependence on m/z.
      • A new isotope dilution-internal standardisation method was developed for the determination of twenty-two trace elements with ICP-MS, in which the sensitivity variation is corrected by monitoring two enriched isotopes, 113In and 203Tl.
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      A Practical Approach for Collecting Large-n Detrital Zircon U-Pb Data sets by Quadrupole LA-ICP-MS

      William A. Matthews and Bernard Guest

      Version of Record online: 9 OCT 2016 | DOI: 10.1111/ggr.12146

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      Key Points

      • A measurement method for acquiring large-n detrital zircon datasets by quadrupole mass spectrometer was developed.
      • Acquisition rates of 130 measurements/hour were achieved at 1–4% total uncertainty.
      • High vertical resolution of isotopic ratios reduces the need to acquire cathodoluminescence imagery for routine detrital zircon analyses.
    18. Accurate Determination of Chlorine, Bromine and Iodine in U.S. Geological Survey Geochemical Reference Materials by Radiochemical Neutron Activation Analysis

      Shun Sekimoto and Mitsuru Ebihara

      Version of Record online: 9 OCT 2016 | DOI: 10.1111/ggr.12145

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      Key Points

      • Trace amounts of Cl, Br and I were determined by RNAA.
      • Inconsistencies were found between the RNAA results and literature values.
      • Explained by (a) I-loss in the pretreatment of solutions analysed by ICP-MS, (b) incomplete quantitative collection of Cl in pyrohydrolysis preconcentration prior to ICP-MS, (c) overestimation due to interferences in ICP-MS instruments.

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