Triple oxygen stable isotope analysis of nitrite measured using continuous flow isotope ratio mass spectrometry [PDF]
MethodsX, 2023 Oxygen stable isotopes (i.e., 16O, 17O, 18O) of nitrite (NO2−) are useful for investigating chemical processes and sources contributing to this important environmental contaminant and nutrient. However, it remains difficult to quantify the oxygen isotope
Wendell W. Walters, Meredith G. Hastings
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Stable Isotope Analysis of Residual Pesticides via High Performance Liquid Chromatography and Elemental Analyzer–Isotope Ratio Mass Spectrometry [PDF]
Molecules, 2022 To broaden the range of measurable pesticides for stable isotope analysis (SIA), we tested whether SIA of the anthranilic diamides cyantraniliprole (CYN) and chlorantraniliprole (CHL) can be achieved under elemental analyzer/isotope ratio mass ...
Hee Young Yun +6 more
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Measurement of Stable Carbon Isotope Ratio of Volatile Organic Compounds Using Thermal Desorption-Gas Chromatography-Combustion-Isotope Ratio Mass Spectrometry [PDF]
International Journal of Analytical ChemistryThis paper presents a method combining a thermal desorption (TD) unit with gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS) to determine compound specific δ13C values of seven VOCs (benzene, toluene, ethylbenzene, m/p-xylene, o ...
Li Yuhong +3 more
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Tree xylem water isotope analysis by Isotope Ratio Mass Spectrometry and laser spectrometry: A dataset to explore tree response to drought [PDF]
Data in Brief, 2020 Water isotopes from plant xylem and surrounding environment are increasingly used in eco-hydrological studies. Carrière et al. [1] analyzed a dataset of water isotopes in (i) the xylem of three different tree species, (ii) the surrounding soil and ...
Simon Damien Carrière +11 more
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Isotope ratio mass spectrometry and spectroscopic techniques for microplastics characterization. [PDF]
Talanta, 2021 Micro- and nano-scale plastic particles in the environment result from their direct release and degradation of larger plastic debris. Relative to macro-sized plastics, these small particles are of special concern due to their potential impact on marine, freshwater, and terrestrial systems.
Birch QT +4 more
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Competition and Predation in Soil Fungivorous Microarthropods Using Stable Isotope Ratio Mass Spectrometry [PDF]
Frontiers in Microbiology, 2019 The soil food web is often described as having three main energy channels: root, bacterial and fungal. Here we provide quantitative data using a sensitive stable isotope ratio mass spectrometry procedure with microcosms on species interactions in the ...
Felicity V. Crotty, Sina M. Adl
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Forensic investigation of falsified antimalarials using isotope ratio mass spectrometry: a pilot investigation [PDF]
Scientific ReportsWe explored whether isotope ratio mass spectrometry (IRMS) is useful to investigate the origin of falsified antimalarials. Forty-four falsified and genuine antimalarial samples (artesunate, artemether-lumefantrine, dihydroartemisinin-piperaquine and ...
Paul N. Newton +6 more
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Identification of Trenbolone Metabolites Using Hydrogen Isotope Ratio Mass Spectrometry and Liquid Chromatography/High Accuracy/High Resolution Mass Spectrometry for Doping Control Analysis [PDF]
Frontiers in Chemistry, 2020 Trenbolone is a synthetic anabolic-androgenic steroid, which has been misused for performance enhancement in sports. The detection of trenbolone doping in routine sports drug testing programs is complex as methods utilizing gas chromatography/mass ...
Marlen Putz, Thomas Piper, Mario Thevis
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Advances in isotope ratio mass spectrometry and required isotope reference materials. [PDF]
Mass Spectrom (Tokyo), 2013 The article gives a condensed version of the keynote lecture held at the International Mass Spectrometry Conference 2012 in Kyoto. Starting with some examples for isotope research the key requirements for metrologically valid procedures enabling traceable and comparable isotope data are discussed.
Vogl J.
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Energy expenditure and weight-related behaviors in youth with Down syndrome: a protocol
Frontiers in Pediatrics, 2023 BackgroundThe consequences of obesity are ominous, yet healthcare professionals are not adequately preventing or treating obesity in youth with Down syndrome (DS).
Michele Polfuss +14 more
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