Results 101 to 110 of about 4,176 (138)

Applications of quantitative NMR using benchtop NMR spectrometer.

2021
In this thesis, quantification procedures are designed and tested on two case studies to inves- tigate the application of benchtop NMR spectrometer on quantitative NMR spectroscopy (qNMR). Prior to the investigation on the benchtop NMR spectrometer, the fundamental theories of qNMR and analysis using internal and external standards are demonstrated on ...
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Enhancing benchtop NMR spectroscopy by means of sample shifting

The Analyst, 2020
Benchtop NMR sensitivity enhancement by cyclic, mechanical shifting of a sample to preserve high nuclear spin polarization.
Javier A. Romero, Krzysztof Kazimierczuk, Dariusz Gołowicz   +2 more
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Frother concentration measurement with a benchtop NMR spectrometer

Minerals Engineering, 2022
In the present study, the previously developed frother concentration analysis technique based on the solid phase extraction process and the cryogen-free benchtop NMR is extended. We demonstrate that this technique can accurately quantify the concentrations of the most widely used flotation frothers such as methyl isobutyl carbinol (MIBC) and ...
Lee Y, Park H, Matviychuk Y, Holland, Daniel, Wang L   +4 more
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Low-field and benchtop NMR

Journal of Magnetic Resonance, 2019
NMR started at low field. Important discoveries like the first observation of NMR in condensed matter, the spin echo, NMR for chemical analysis, Fourier NMR spectroscopy, 2D NMR spectroscopy and magnetic resonance imaging happened at field strengths considered low today.
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Quantitative analysis of cannabinoids using benchtop NMR instruments

Analytical Methods, 2020
Quantification of Cannabinoids Using Benchtop NMR.
Juan F. Araneda, Terry Chu, Matthew C. Leclerc, Susanne D. Riegel, Neil Spingarn   +4 more
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Applications of benchtop NMR in the organic chemistry instructional laboratory

Magnetic Resonance in Chemistry, 2020
Abstract The instructional organic chemistry laboratory has been substantially improved through the implementation of benchtop NMR analysis. When used in conjunction with unknown reaction components in multi‐outcome experiments, NMR analysis transforms the laboratory exercise into an investigative inquiry wherein students elucidate ...
Richard W. Morrison, Mengqi Zhang
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Quantification of mixtures of analogues of illicit substances by benchtop NMR spectroscopy

Journal of Magnetic Resonance, 2022
This paper investigates the possibility of using benchtop NMR spectroscopy for quantification of illicit drugs (methamphetamine) in binary and ternary mixtures with impurities and cutting agents (N-isopropylbenzylamine, phenethylamine and dimethylsulfone).
Lee , Yejin, Matviychuk , Yevgen, Bogun , Ben, Johnson , Cameron S., Holland, Daniel   +4 more
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Benchtop NMR for lab-on-a-chip

ISMRM Annual Meeting
A benchtop NMR spectrometer has been designed and optimized to monitor real-time metabolism of 3D tissue engineered on microfluidic platforms using hyperpolarization by dynamic nuclear polarisation. We show the design process, which included the modification of a commercial benchtop NMR spectrometer, the design and fabrication of a microfluidic ...
Marc Azagra, Alejandro Portela, Hetal Patel, Dian Weerakonda, Jose Yeste, Alba Herrero-Gómez, Matthew Fallon, Megdouda Benamara, Marc Dubois, Tryfon Antonakakis, Javier Ramon, Irene Marco-Rius   +11 more
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Quantitative analysis of wine and other fermented beverages with benchtop NMR

Analytica Chimica Acta, 2021
We present a fully automated approach for quantitative compositional analysis of fermented beverages using benchtop nuclear magnetic resonance (NMR) spectroscopy. NMR spectroscopy, renowned for its applications in chemical structure elucidation, is gaining attention as a quantitative analytical technique due to its inherent linearity and the ability to
Yevgen Matviychuk, Sharlene Haycock, Tanya Rutan, Daniel J. Holland   +3 more
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Design of a benchtop NMR/MRI system

2018
Nuclear Magnetic Resonance (NMR) provides us with ways to look at objects in a very intricate and detailed manner. A major advantage of these systems is their non-destructive nature and them not requiring any contact with the samples. Current systems are quite often exorbitant and complex in nature, making them unfeasible for teaching and research ...
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