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
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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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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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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
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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
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An analytical system for stable isotope analysis on carbon monoxide using continuous-flow isotope-ratio mass spectrometry [PDF]
Atmospheric Measurement Techniques, 2015 A fully automated system for the determination of δ13C and δ18O in atmospheric CO has been developed. CO is extracted from an air sample and converted into carbon dioxide (CO2) using the Schütze reagent.
S. L. Pathirana +3 more
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Recent advances in the application of stable isotope ratio analysis in forensic chemistry [PDF]
, 2010 This review paper updates the previous literature in relation to the continued and developing use of stable isotope ratio analysis in samples which are relevant to forensic science.
Benson +40 more
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mzMatch-ISO: an R tool for the annotation and relative quantification of isotope-labelled mass spectrometry data [PDF]
, 2013 <p>Motivation: Stable isotope-labelling experiments have recently gained increasing popularity in metabolomics studies, providing unique insights into the dynamics of metabolic fluxes, beyond the steady-state information gathered by routine mass ...
Achuthanunni Chokkathukalam +21 more
core +5 more sources
Nitrogen isotopic analyses by isotope-ratio-monitoring gas chromatography / mass spectrometry [PDF]
Journal of the American Society for Mass Spectrometry, 1994 Amino acids containing natural-abundance levels of 15N were derivatized and analyzed isotopically using a technique in which individual compounds are separated by gas chromatography, combusted on-line, and the product stream sent directly to an isotope-ratio mass spectrometer. For samples of N2 gas, standard deviations of ratio measurement were better
Merritt, Dawn A., Hayes, J.M.
openaire +3 more sources
Sr-isotope analysis of speleothems by LA-MC-ICP-MS: High temporal resolution and fast data acquisition [PDF]
, 2017 Speleothems are well established climate archives. A wide array of geochemical proxies, including stable isotopes and trace elements are present within speleothems to reconstruct past climate variability.
Breitenbach, Sebastian +5 more
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