Knowledge Base

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View2
  • HR-ICPMS
  • Element 2
  • Speciation
  • GCI200
  • Methylmercury

Speciation analysis of methylmercury via species specific isotope dilution GC-ICP-MS 

Christoph-Cornelius Brombach (1), Henning Fröllje (1), Thomas Pichler (1), Antonella Guzzonato (2) and Torsten Lindemann (2)

1) Geochemistry and Hydrogeology Group, University of Bremen, Germany, 2) Thermo Fisher Scientific, Bremen, Germany

TN30465

Goal: To demonstrate the utility of the Thermo Scientific™ Element™ HR-ICP-MS coupled with the Thermo Scientific™ Trace™ 1310 GC via the Thermo Scientific™ GCI 200™ Interface for speciation analysis of mercury.

View8
View0
  • Clumped Isotopes

13C18O16O in air

John M. Eiler, Edwin Schauble and Nami Kitchen

CalTech, USA

Geochimica et Cosmochimica Acta (2003), V67 (18), ppA86-A86, ISSN 0016-7037

Goal: The atmospheric budget of CO2 is constrained by its concentration, δ13C and δ18O. However, these are insufficient to resolve source and sink processes, which vary complexly in flux and/or isotope signature. There are twelve stable isotopologues of CO2, each of which has unique thermodynamic and kinetic properties and could offer unique constraints on the budget.

View1
  • IRMS
  • HPLC
  • Carbon isotopes
  • Honey Adulteration

Improved detection of honey adulteration by measuring differences between 13C/12C stable carbon isotope ratios of protein and sugar compounds with a combination of elemental analyzer - isotope ratio mass spectrometry and liquid chromatography - isotope ratio mass spectrometry ( 13C-EA/LC-IRMS) 

Lutz Elflein, Kurt-Peter Raezke

APPLICA GmbH - Applied Chemical Analysis, Olof-Palme-Str. 8, 28719 Bremen, Germany

Apidologie (2008), V39(5), pp 574-587, doi: 10.1051/apido:2008042

Goal: The detection of honey adulteration with invert sugar syrups from various C3 and C4 plant sources was realized by coupling an isotope ratio mass spectrometer both to an elemental analyzer and to a liquid chromatograph (EA/LC-IRMS). For 451 authentic honeys measured, the individual δ13C values of bulk honey, its protein fraction, fructose, glucose, and di- and trisaccharides ranged from –22.5 to –28.2 permil and did not show differences (Δδ13C) of more than +/-0.9 permil (average), with a maximum standard deviation of 0.7 permil. The Δδ13C (fructose – glucose) value was significantly lower (0+/- 0.3 permil). The newly developed EA/LC-IRMS method and the purity criteria defined represent a significant improvement compared to existing methods.

View0
  • GC-IRMS
  • LC-IRMS
  • Bone Collagen

Comparison of liquid chromatography–isotope ratio mass spectrometry (LC/IRMS) and gas chromatography–combustion– isotope ratio mass spectrometry (GC/C/IRMS) for the determination of collagen amino acid d13C values for palaeodietary and palaeoecological reconstruction

Philip J. H. Dunn, Noah V. Honch and Richard P. Evershed

Organic Geochemistry Unit, Bristol Biogeochemistry Research Center, School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, UK

Rapid Communications in Mass Spectrometry (2011), V25, pp2995–3011, doi: 10.1002/rcm.5174

Goal: Results are presented of a comparison of the amino acid (AA) delta13C values obtained by gas chromatography- combustion-isotope ratio mass spectrometry (GC/C/IRMS) and liquid chromatography- isotope ratio mass spectrometry (LC/IRMS). Although the primary focus was the compound-specific stable carbon isotope analysis of bone collagen AAs, because of its growing application for palaeodietary and palaeoecological reconstruction, the results are relevant to any field where AA delta13C values are required. We compare LC/IRMS with the most up-to-date GC/C/IRMS method using N-acetyl methyl ester (NACME) AA derivatives.

View1
  • TIMS
  • Triton XT

TRITON XT Thermal Ionization MS Brochure

Thermo Fisher Scientific, Bremen, Germany

BR30537

Goal: A new edition of the market leading Thermo Scientific™
Triton™ Series TIMS, capturing the best of technology for
high-precision isotope ratio analysis.

View3
  • HR-ICPMS
  • Element 2
  • Semi-Conductor
  • Liquid crystal
  • Organic solvent

Determination of ultratrace elements in liquid crystal

Julian D. Wills and Joachim Hinrichs

Thermo Fisher Scientific, Bremen, Germany

AN30073

Goal: To demonstrate the suitability of the Thermo Scientific™ Element 2™ High Resolution ICP-MS for trace metals analysis in high purity samples, related to the manufacture of semiconductors. 

View2
  • HR-ICPMS
  • Element 2
  • Semi-Conductor
  • TMAH

Determination of ultratrace elements in semiconductor grade TMAH developer

Julian D. Wills and Joachim Hinrichs

Thermo Fisher Scientific, Bremen, Germany

AN30072

Goal: To demonstrate the suitability of the Thermo Scientific™ Element 2™ High Resolution ICP-MS for trace metals analysis in high purity samples, related to the manufacture of semiconductors.

View2
  • MC-ICPMS
  • Neptune
  • Li Isotopes
  • laser Ablation

Improved in-situ δ7Li analysis of synthetic glass by LA-MC-ICP-MS with 10^13 Ω amplifiers

Grant Craig, Hauke Vollstaedt, Nicholas Lloyd, Claudia Bouman and Johannes Schwieters

Thermo Fisher Scientific, Bremen, Germany

TN30440

Goal: The application of Thermo Scientific™ 10^13 Amplifier Technology™ to lithium isotope ratio analysis by LA-MC-ICP-MS is demonstrated to improve precision at typical lithium concentrations for geological materials.

View1

Phenotyping with the Thermo Scientific Delta Ray IRIS 

Thermo Fisher Scientific, Bremen, Germany

BR30500

View6
  • MC-ICPMS
  • Neptune XT

NEPTUNE XT Multicollector ICPMS Brochure

Thermo Fisher Scientific, Bremen, Germany

BR30536

Goal: A new edition of the market leading Thermo Scientific™
Neptune™ Series MC-ICP-MS, capturing the best of
technology for high-precision isotope ratio analysis.

View0
  • IRMS
  • 253Plus
  • Kiel IV
  • Clumped Isotopes

Penultimate deglacial warming across the Mediterranean Sea revealed by clumped isotopes in foraminifera

L. Rodríguez-Sanz (1), S. M. Bernasconi (2), G. Marino (1,3), D. Heslop (1), I. A. Müller (2), A. Fernandez (2), K. M. Grant (1), E. J. Rohling (1,4)

1) Research School of Earth Sciences, The Australian National University, Canberra, Australia; 2) Geological Institute, ETH Zürich, Switzerland; 3) University of Vigo, Spain; 4) Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, UK

Scientific Reports (2017), V7: 16572, DOI: 10.1038/s41598-017-16528-6

Goal: Here we advance the understanding of Mediterranean hydrographic variability through the penultimate glacial termination (TII) and last interglacial, by applying the clumped isotope (Δ47) paleothermometer to
planktic foraminifera with a novel data-processing approach.

View0
  • IRMS
  • 253Plus
  • Kiel IV
  • Clumped Isotopes

A Reassessment of the Precision of Carbonate Clumped Isotope Measurements: Implications for Calibrations and Paleoclimate Reconstructions

Alvaro Fernandez (1), Inigo A. Müller (1), Laura Rodríguez-Sanz (2) , Joep van Dijk (1), Nathan Looser (1), Stefano M. Bernasconi (1)

1) Geological Institute, ETH Zürich, Switzerland; 2) Research School of Earth Sciences, The Australian National University, Canberra, ACT, Australia

Geochemistry, Geophysics, Geosystems (2017), V18, DOI: org/10.1002/2017GC007106

Goal: Carbonate clumped isotopes offer a potentially transformational tool to interpret Earth’s history, but the proxy is still limited by poor interlaboratory reproducibility. Here, we focus on the uncertainties
that result from the analysis of only a few replicate measurements to understand the extent to which unconstrained errors affect calibration relationships and paleoclimate reconstructions.

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  • IRIS
  • Delta Ray
  • Photosynthetic Pathway
  • Carbon Isotopes

Carbon isotope ratios during plant gas exchange: Insights in the photosynthetic pathway and respiratory substrate

Benjamin Birami (1), Ines Bamberger (1), Andreas Gast (1), Nadine K. Ruehr (1), Magda Mandic (2)

1) Karlsruhe Institute of Technology (KIT), Institute of Meteorology and Climate Research - Atmospheric Environmental Research (IMK-IFU), Garmisch-Partenkirchen, Germany; 2) Thermo Fisher Scientific, Bremen, Germany

AN30448

Goal: This note describes and identifies both short-term and long-term changes in plant metabolism using Isotope Ratio Infrared Spectrometry.

View38
  • IRMS
  • Delta V
  • GasBench II
  • Isotope Fingerprint
  • Wine

GasBench II System: Tracking wine adulteration using oxygen isotope fingerprints

Jens Radke and Christopher Brodie

Thermo Fisher Scientific, Bremen, Germany

AB30461

Goal: This note demonstrate that wine adulteration by addition of water can be tracked using oxygen isotope fingerprints.