Knowledge Base

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View4
  • IRMS
  • EA IsoLink
  • Isotope Fingerprints
  • Food Fraud
  • Coffee
  • Geographical Origin

EA-IRMS: Tracing the geographical origin of coffee using isotope fingerprints

Maryam Weigt, Christopher Brodie and Oliver Kracht

Thermo Fisher Scientific, Bremen, Germany

AN30418

Goal: In this application note we show hydrogen and oxygen stable isotope measurements on roasted coffee samples measured with the Thermo Scientific™ EA IsoLink™ IRMS System. We were able to trace the origin of coffee beans based on unique trends observed from their isotopic fingerprints.

View3
  • IRMS
  • EA IsoLink
  • Isotope Fingerprints
  • Food Fraud
  • Sugar

EA-IRMS: Testing sugar package label claims using carbon isotope fingerprints

Maryam Weigt, Christopher Brodie and Oliver Kracht

Thermo Fisher Scientific, Bremen, Germany

AB30424

Goal: In this application brief we show carbon isotope measurements on sugar and distinguish between cane and beet sugars and verify package label claims

View3
  • IRMS
  • EA IsoLink
  • Isotope Fingerprints
  • Tomatoes
  • Organic Vegetables

EA-IRMS: Detecting organic grown vegetables

Christopher Brodie and Oliver Kracht

Thermo Fisher Scientific, Bremen, Germany

AB30399

Goal: In this application brief we show nitrogen isotope measurements on tomato samples and are able to conclude which tomatoes were grown using organic fertilizers and which tomatoes were grown using synthetic fertilizers.

View4
  • IRMS
  • EA IsoLink
  • Isotope Fingerprints
  • Cosmetics
  • Shark Liver Oil
  • Olive Oil

EA-IRMS: Detection of squalane from animal and vegetable sources

Sylvie Guibert (1), Magali Batteau (1), Patrick Jame (1) and Christopher Brodie (2)

1) Univ Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, Villeurbanne, France; 2) Thermo Fisher Scientific, Bremen, Germany

AB30276

Goal: This application brief shows that the carbon isotope fingerprint of cosmetics can be used for product labeling fraud.

View4
  • IRMS
  • Stable Isotopes
  • Forensics

Forensic Applications of Isotope Ratio Mass Spectrometry

Lesley A. Chesson

IsoForensics Inc.

Spectroscopy Online

Goal: This manuscript discusses the application of two common instrument configurations used for gas source IRMS - dual inlet IRMS and continusou flow IRMS - and how they are useful in the field of forensic science.

View3
  • MC-ICPMS
  • Neptune Plus
  • High Resolution ICP-MS
  • Element 2/XR
  • Gas Chromatography
  • Speciation
  • GC Transferline

Thermo Scientific GCI Series Interface

Thermo Fisher Scientific, Bremen, Germany

PS43370

Goal: The Thermo Scientific™ GCI Series Interface is a range of products that spans the full Thermo Scientific™ ICP-MS portfolio. The GC transferline that is key part of this kit is highly flexible and lightweigthed and enables improved chromatographic separation for high boiling compounds.

View3
  • IRIS
  • Delta Ray
  • CO2
  • Carbon and Oxygen Isotopes

The power of stable isotope analysis

HJ Jost

Thermo Fisher Scientific, Bremen, Germany

Spectroscopy Online

Goal: Identifying the origin of CO2 in various samples is a major challenge for environmental scientists, regulators and the industry. Different emission sources create CO2 with different isotopic signatures. The Delta Ray Isotope Ratio Infrared Specometer is a powerful instrument for field CO2 monitoring and analysis.

View3
  • IRIS
  • Delta Ray
  • CO2
  • Carbon and Oxygen Isotopes

The Delta Ray Road Trip

HJ Jost

Thermo Fisher Scientific, Bremen, Germany

Spectroscopy Online

Goal: The capabilities and robustness of the Delta Ray Isotope Ratio Infrared Spectrometer are demonstrated by installing it in a reacreational vehicle for a road trip across Canada, measuring CO2 concentration and isotope ratios while traveling from coast to coast. 

View12
  • TIMS
  • Triton Plus

Triton Plus Instrument Poster

Thermo Fisher Scientific, Bremen, Germany

View14
  • MC-ICPMS
  • Neptune Plus

Neptune Plus Instrument Poster

Thermo Fisher Scientific, Bremen, Germany

View4
  • IRMS
  • Delta V
  • Stable Isotopes
  • Strawberry
  • Essential Oils

Headspace-solid phase microextraction coupled to gas chromatography–combustion-isotope ratio mass spectrometer and to enantioselective gas chromatography for strawberry flavoured food quality control

Luisa Schipilliti (1), Paola Dugo (1,2), Ivana Bonaccorsi (1) and Luigi Mondello (1,2)

1) Dipartimento Farmaco-chimico, Facoltà di Farmacia, Università di Messina, Viale Annunziata, 98168 Messina, Italy, 2) Università Campus-Biomedico, Via A. del Portillo 21, 00128 Roma, Italy

Journal of Chromatography A (2011), V1218 (42), p7481-7486, doi: 10.1016/j.chroma.2011.07.072

Goal: Authenticity assessment of flavoured strawberry foods was performed using headspace-solid phase microextraction (HS-SPME) coupled to gas chromatography–combustion-isotope ratio mass spectrometry (GC–C-IRMS).

View9
  • IRMS
  • Delta V
  • Stable Isotopes
  • Essential Oils

Evaluation of Gas Chromatography−Combustion−Isotope RatioMass Spectrometry (GC-C-IRMS) for the Quality Assessment of Citrus Liqueurs

Luisa Schipilliti (1), Ivana Bonaccorsi 1), Antonella Cotroneo (1), Paola Dugo (1,2 and Luigi Mondello (1,2)

1) Diaprtimento di Scienze del Farmaco e dei Prodotti per la Salute, Università di Messina, Viale Annunziata, 98168 Messina, Italy, 2) Campus-Biomedico, Via A. del Portillo 21, 00128 Roma, Italy

Journal of Agricultural and Food Chemistry (2013), V61 (8), pp1661–1670, doi: 10.1021/jf3028073

Goal: The aim of this study is to investigate the authenticity of Italian liqueurs, of lemon, bergamot, and mandarin (locally known as “limoncello”, “bargamino”, and “mandarinetto”), comparing the carbon isotope ratios with values determined in genuine cold-pressed peel oils.

View3
  • IRMS
  • Delta V
  • Stable Isotopes
  • Essential Oils

Genuineness assessment of mandarin essential oils employing gas chromatography-combustion-isotope ratio MS (GC-C-IRMS)

Luisa Schipilliti (1), Peter Quinto Tranchida (1), Danilo Sciarrone (1), Marina Russo (1), Paola Dugo (1), Giovanni Dugo (1), Luigi Mondello (1,2)

1) Dipartimento Farmaco-chimico, Facoltà di Farmacia, Università di Messina, Messina, Italy, 2) Campus Biomedico, Roma, Italy

Goal: Reconstituted mandarin oils are easy to find on the market; useful information on essential oil authenticity, quality, extraction technique, geographic origin and biogenesis can be attained through high-resolution GC of the volatile fraction, or enantioselective GC, using different chiral stationary phases. 

View5
  • IRMS
  • Delta XL
  • TC/EA
  • Hydrogen Isotopes
  • Essential Oils

Authenticity assessment of lavender oils using GC-P-IRMS: 2H/1H isotope ratios of linalool and linalyl acetate

Steffi Bilke and Armin Mosandl

Institut für Lebensmittelchemie, Biozentrum J.W. Goethe-Universität, Frankfurt/Main, Germany

European Food Research and Technology (2002), V214 (6),  pp532–535, doi: 10.1007/s00217-002-0508-z

Goal: Gas chromatography-pyrolysis-isotope mass spectrometry (GC-P-IRMS) is applied to the authenticity assessment of lavender oils. 

View6
  • IRMS
  • 253 Plus
  • LIDI Software
  • Clumped Isotopes

Carbonate clumped isotope analyses with the long-integration dual-inlet (LIDI) workflow: scratching at the lower sample weight boundaries

Inigo A. Müller (1), Alvaro Fernandez (1), Jens Radke (2), Joep van Dijk (1), Devon Bowen (3), Johannes Schwieters (2) and Stefano M. Bernasconi (1)

1) Geological Institute, ETH Zürich, Switzerland, 2) Thermo Fisher Scientific, Bremen, Germany, 3) Ziggurat GmbH, Stäfa, Switzerland

Rapid Communications in Mass Spectrometry (2017) , V31 (12), pp1057–1066, doi: 10.1002/rcm.7878

Goal: Clumped isotope analyses (Δ47) of carbonates by dual inlet (DI) mass spectrometry require long integration times to reach the necessary high precision due to the low abundance of the rare isotopologue 13C18O16O. We tested an improved analytical workflow that significantly reduces the sample sizes and total analysis time per sample while preserving precision and accuracy.