Results 1 to 10 of about 156,705 (331)

Triple oxygen stable isotope analysis of nitrite measured using continuous flow isotope ratio mass spectrometry [PDF]

open access: yesMethodsX, 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
doaj   +2 more sources

Stable Isotope Analysis of Residual Pesticides via High Performance Liquid Chromatography and Elemental Analyzer–Isotope Ratio Mass Spectrometry [PDF]

open access: yesMolecules, 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
doaj   +2 more sources

Tree xylem water isotope analysis by Isotope Ratio Mass Spectrometry and laser spectrometry: A dataset to explore tree response to drought [PDF]

open access: yesData 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
doaj   +2 more sources

Competition and Predation in Soil Fungivorous Microarthropods Using Stable Isotope Ratio Mass Spectrometry [PDF]

open access: yesFrontiers 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
doaj   +2 more sources

Isotope ratio - Mass spectrometry [PDF]

open access: yes, 2012
Podeu consultar el llibre complet a: http://hdl.handle.net/2445/32166This article summarizes the configurations involving isotope ratio mass spectrometry (IRMS) technology available at the CCiTUB and the wide range of possible applications. Some examples
Marimon Corbella, Rosa Maria   +2 more
core   +2 more sources

Forensic investigation of falsified antimalarials using isotope ratio mass spectrometry: a pilot investigation [PDF]

open access: yesScientific Reports
We 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
doaj   +2 more sources

Chapter 6 Mass spectrometry: Isotope ratio mass spectrometry

open access: hybrid, 1997
Publisher Summary This chapter focuses on isotope ratio mass spectrometry (IRMS). IRMS determines the ratio of isotopes of a given element, such as H: 2 H and 12 C: 13 C present in a specimen. The total amount of each isotope also is determined.
Thomas R. Browne   +2 more
openalex   +2 more sources

Identification of Trenbolone Metabolites Using Hydrogen Isotope Ratio Mass Spectrometry and Liquid Chromatography/High Accuracy/High Resolution Mass Spectrometry for Doping Control Analysis [PDF]

open access: yesFrontiers 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
doaj   +2 more sources

Advances in isotope ratio mass spectrometry and required isotope reference materials. [PDF]

open access: yesMass 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.
europepmc   +4 more sources

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