Results 11 to 20 of about 5,974,105 (275)
Isotope ratio - Mass spectrometry [PDF]
, 2012 This article summarizes the configurations involving isotope ratio mass spectrometry (IRMS) technology available at the CCiTUB and the wide range of possible applications. Some examples of these applications are shown.
Marimon Corbella, Rosa Maria +2 more
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Optical isotope ratio spectroscopy – complementing isotope ratio mass spectrometry
OSA Optical Sensors and Sensing Congress 2021 (AIS, FTS, HISE, SENSORS, ES), 2021 Isotope ratio measurements and scale definitions are typically related to mass specectroscopy. This work discusses the challenges of optical isotope ratio spectroscopy and its prospects to significantly complement isotope ratio mass spectrometry.
Braden-Behrens, Jelka +11 more
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Sampling systems for isotope‐ratio mass spectrometry of atmospheric ammonia
Rapid Communications in Mass Spectrometry, 2005 Abstract Passive and active ammonia (NH 3 ) sampling devices have been tested for their nitrogen (N) capture potential and δ 15 N fractionation effects. Several sampling techniques produced significantly different
Skinner, Richard +4 more
openaire +5 more sources
Differential Mobility Spectrometry-Mass Spectrometry (DMS-MS) for Uranium Ion Prefiltration to Improve Isotope Ratio Analysis [PDF]
, 2020 We demonstrate chemical noise filtration by differential mobility spectrometry (DMS) ahead of an ion trap mass analyzer. Use of DMS enables 10x improved accuracy in the isotope ratio measurement made for a sample of natural ...
Jacob T., Shelley +3 more
core +1 more source
Yankuang ceshi, 2021 BACKGROUND Before analyzing the carbon isotopes of n-alkanes by gas chromatography-gas isotope mass spectrometry (GC-IRMS), it is necessary to pre-separate and enrich n-alkanes and isoparaffins in saturated hydrocarbon samples. Whether the carbon isotope
DONG Hao-wei +6 more
doaj +1 more source
Continuous-flow isotope ratio mass spectrometry method for carbon and hydrogen isotope measurements on atmospheric methane [PDF]
Atmospheric Measurement Techniques, 2010 We describe a continuous-flow isotope ratio mass spectrometry (CF-IRMS) technique for high-precision δD and δ<sup>13</sup>C measurements of atmospheric methane on 40 mL air samples.
M. Brass, T. Röckmann
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State-of-the-Art Analytical Approaches for Illicit Drug Profiling in Forensic Investigations
Molecules, 2022 In forensic chemistry, when investigating seized illicit drugs, the profiling or chemical fingerprinting of drugs is considered fundamental. This involves the identification, quantitation and categorization of drug samples into groups, providing ...
Reem Ahmed +2 more
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Molecules, 2020 Precise tellurium (Te) isotope ratio measurement using mass spectrometry is a challenging task for many decades. In this paper, Te isotope ratio measurements using multi-collector inductively coupled plasma mass spectrometry (MC–ICP–MS) in terrestrial Te
Rajamanickam Murugan +2 more
doaj +1 more source
Isotope Calculation Gadgets: A Series of Software for Isotope-Tracing Experiments in Garuda Platform
Metabolites, 2022 Isotope tracing is a powerful technique for elucidating intracellular metabolism. Experiments utilizing this technique involve various processes, such as the correction of natural isotopes.
Nobuyuki Okahashi +3 more
doaj +1 more source
Liquid chromatography-tandem mass spectrometry - Application in the clinical laboratory [PDF]
, 2003 This review provides a concise survey of liquid chromatography tandem mass spectrometry (LCTMS) as an emerging technology in clinical chemistry. The combination of two mass spectrometers with an interposed collision cell characterizes LCTMS as an ...
Michael Vogeser, Vogeser, Michael
core +2 more sources