Journal
JOURNAL OF MAGNETIC RESONANCE
Volume 275, Issue -, Pages 1-10Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jmr.2016.11.016
Keywords
Quantitative NMR spectroscopy; Gas-phase NMR spectroscopy; Purity assessment; Reference gas mixtures
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Due to its direct correlation to the number of spins within a sample quantitative NMR spectroscopy (qNMR) is a promising method with absolute comparison abilities in complex systems in technical, as well as metrological applications. Most of the samples studied with qNMR are in liquid state in diluted solutions, while gas-phase applications represent a rarely applied case. Commercially available NMR equipment was used for purity assessment of liquid and liquefied hydrocarbons serving as raw materials for production of primary reference gas standards. Additionally, gas-phase studies were performed within an online NMR flow probe, as well as in a high-pressure NMR setup to check feasibility as verification method for the composition of gas mixtures. (C) 2016 Elsevier Inc. All rights reserved.
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