Journal: Journal of Analytical Atomic Spectrometry

Abbreviation

J Anal At Spectrom

Publisher

Royal Society of Chemistry

Journal Volumes

ISSN

0267-9477
1364-5544

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Publications1 - 10 of 145
  • Calibration Studies on Dried Aerosols for Laser Ablation–Inductively Coupled Plasma Mass Spectrometry
    Item type: Journal Article
    Günther, Detlef; Cousin, Hervé; Magyar, Balázs; et al. (1997)
    Journal of Analytical Atomic Spectrometry
  • Enhanced sensitivity in inductively coupled plasma sector field mass spectrometry for direct solid analysis using laser ablation (LA-ICP-SFMS)
    Item type: Journal Article
    Latkoczy, Christopher; Günther, Detlef (2002)
    Journal of Analytical Atomic Spectrometry
  • Stoichiometry of various Ag(In)SbTe phase change materials (PCMs) determined using LA-ICP-MS
    Item type: Journal Article
    Frei, Christian; Schenzel, Judith; Waibel, Friedrich; et al. (2007)
    Journal of Analytical Atomic Spectrometry
  • Rapid screening of boron isotope ratios in nuclear shielding materials by LA-ICPMS-a comparison of two different instrumental setups
    Item type: Journal Article
    Kurta, Christoph; Dorta, Ladina; Mittermayr, Florian; et al. (2014)
    Journal of Analytical Atomic Spectrometry
  • Effects of operating conditions and matrix on mass bias in MC-ICPMS
    Item type: Journal Article
    Fontaine, Gisela Helene; Hattendorf, Bodo; Bourdon, Bernard; et al. (2009)
    Journal of Analytical Atomic Spectrometry
  • Efficient separation and high-precision analyses of tin and cadmium isotopes in geological materials
    Item type: Journal Article
    Friebel, Matthias; Toth, Eniko R.; Fehr, Manuela A.; et al. (2020)
    Journal of Analytical Atomic Spectrometry
    This paper presents a new method for the separation of Sn and Cd from geological matrices followed by high-precision isotope analyses that include low abundance isotopes (<1.25%). The new technique is of specific interest for the detection of small mass-independent nucleosynthetic or cosmogenic isotope variations in meteorites and other planetary materials. We also report a new precise estimate for Sn isotope abundances. The method employs a combination of ion exchange and extraction chromatography together with multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). Tin is separated from the sample matrix using an anion-exchange resin, followed by removal of remaining matrix elements and organics using the TRU and Pre-filter resins, respectively. The matrix fraction from the TRU resin step is further purified to isolate Cd using a two-stage anion exchange procedure. Analyses of Sn and Cd standard solutions doped with interfering elements were employed to define thresholds for tolerable amounts of interference producing elements. Our data demonstrate that our new procedure produces purified Sn and Cd solutions with sufficiently low levels of contaminants for high precision Sn and Cd isotope analyses. Removal of U is important for Sn isotope data because of doubly charged U ions. The internally normalised Sn isotope data of the two standard solution (NIST SRM 3161a and SPEX CLSN2-2Y) are in excellent agreement with previous data. Based on repeated analysis of independently processed lake sediment aliquots, an external reproducibility (intermediate precision) (2SD) is achieved of ±110 ppm for 112Sn/120Sn, ±170 ppm for 114Sn/120Sn, ±160 ppm for 115Sn/120Sn, ±21 ppm for 117Sn/120Sn, ±13 ppm for 118Sn/120Sn, ±20 ppm for 119Sn/120Sn, ±22 ppm for 122Sn/120Sn and ±24 ppm for 124Sn/120Sn. Replicate Sn analyses of the carbonaceous chondrite Allende are in excellent agreement with those of the lake sediments. For Cd isotope analyses, the lake sediment yields an external reproducibility (2SD) of ±170 ppm for 106Cd/111Cd, ±200 ppm for 108Cd/111Cd, ±34 ppm for 110Cd/111Cd, ±18 ppm for 112Cd/111Cd, ±24 ppm for 113Cd/111Cd and ±15 ppm for 114Cd/111Cd.
  • Signal acquisition in µs time resolution for in-torch LA-ICP-MS
    Item type: Journal Article
    Tanner, Martin; Günther, Detlef (2007)
    Journal of Analytical Atomic Spectrometry
  • A laser ablation system for the analysis of radioactive samples using inductively coupled plasma mass spectrometry
    Item type: Journal Article
    Guillong, Marcel; Heimgartner, Peter; Kopajtic, Zlatan; et al. (2007)
    Journal of Analytical Atomic Spectrometry
  • High-precision Sm isotope analysis by thermal ionisation mass spectrometry for large meteorite samples (>1 g)
    Item type: Journal Article
    Frossard, Paul; Ball, James M.J.; Schönbächler, Maria (2025)
    Journal of Analytical Atomic Spectrometry
    This study presents a new procedure for high-precision Sm isotope analysis by thermal ionisation mass spectrometry (TIMS) for geological samples. A four-step chemical separation scheme results in sharp separation of Sm and Nd from the same sample aliquot. The first step utilises anion exchange resin to remove Fe from the sample solution. Two different liquid-liquid extraction resins are then used to isolate rare-earth elements (TRU-Spec) and purify Sm from Nd (DGA). Fractionation occurs on the DGA resin due to the nuclear field shift effect, but this is negligible if yields greater than 70% are achieved. Different analytical setups were tested to ascertain their ionisation efficiencies on TIMS. The effect of activators composed of Pt and Ta was tested on single Re filaments but the conventional double Re filament assembly provided efficient ionisation and more stable ion beams. The determination of nucleosynthetic isotope variations requires high precision for all Sm isotope ratios. We aimed to improve the precision on the scarce Sm-144 isotope (3% of all Sm). Static, multistatic and dynamic methods were tested. Isotope ratios were normalised to both Sm-147/Sm-152 and Sm-152/Sm-148 for comparison. The dynamic methods failed to provide better precision on ratios involving Sm-144, whereas the multistatic method yielded improved precisions between 13 and 22 ppm (twice the standard deviation, 2 SD) on the Sm-144/Sm-152 ratio. Synthetic standards have variable Sm isotope compositions, thus requiring systematic and precise characterisation against terrestrial samples. Analyses conducted using this new procedure yielded high-precision values which were consistent with literature data for an array of terrestrial rock standards and the meteorite Allende.
Publications1 - 10 of 145