Results 151 to 160 of about 4,831 (193)

A field-invariant method for quantitative analysis with benchtop NMR

Journal of Magnetic Resonance, 2019
Recently developed benchtop instruments have the potential of bringing the benefits of NMR spectroscopy to the wide variety of industrial applications. Unfortunately, their low spectral resolution poses significant challenges for traditional quantification approach. Here we present a novel model-based method designed to overcome these challenges.
Yevgen Matviychuk, Daniel J Holland
exaly   +6 more sources

Quantitative analysis using external standards with a benchtop NMR spectrometer

Journal of Magnetic Resonance, 2020
This paper investigates the use of benchtop NMR spectrometers for quantitative analysis with external standards. Specifically, it focuses on the measurement of aqueous samples with analyte concentrations ranging from 30 mM to 1.7 M and electrical conductivity of up to 84mScm-1 using a 43 MHz instrument.
Yevgen Matviychuk, Daniel J Holland
exaly   +6 more sources

Applications of quantitative NMR using benchtop NMR spectrometer. [PDF]

, 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 ...
Lee, Yejin
openaire   +3 more sources

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Benchtop NMR spectrometers in academic teaching

TrAC - Trends in Analytical Chemistry, 2016
Abstract Cost and workflow considerations can render high-field NMR spectrometers a poor match for hands-on learning in an undergraduate teaching laboratory curriculum. Recent developments in permanent magnet technology have enabled a new class of NMR instrumentation: the benchtop spectrometer. These small, affordable, low-field NMR spectrometers (40–
Susanne D Riegel
exaly   +2 more sources

Lignin analysis with benchtop NMR spectroscopy

Holzforschung, 2020
AbstractBenchtop nuclear magnetic resonance (NMR) spectroscopy is an emerging field with an appealing profile for industrial applications. The instrumentation offers the possibility to measure NMR spectra in situations where high-field NMR spectroscopy is considered too expensive or complicated.
Jerk Rönnols, Fredrik Aldaeus
exaly   +2 more sources

Progress in low-field benchtop NMR spectroscopy in chemical and biochemical analysis

Analytica Chimica Acta, 2019
The employment of spectroscopically-resolved NMR techniques as analytical probes have previously been both prohibitively expensive and logistically challenging in view of the large sizes of high-field facilities.
Martin Grootveld, Benita Percival, Miles Gibson   +2 more
exaly   +2 more sources

Multi-scale benchtop 1H NMR spectroscopy for milk analysis

LWT - Food Science and Technology, 2021
Benchtop NMR systems offers various advantages such as being easy to use, not requiring constant maintenance and being available at affordable prices.
Çagri Çavdaroğlu, Jonathan Farjon, Patrick Giraudeau   +2 more
exaly   +2 more sources

Recent applications of benchtop NMR spectroscopy and relaxometry

, 2023
NMR spectroscopy is a powerful analytical technique that has been one of the key technologies in chemistry, particular for compound identification, structure elucidation and reaction monitoring, for the past 70 years.
Oliver A.H. Jones, Neil Robinson
core   +3 more sources

Bayesian approach for automated quantitative analysis of benchtop NMR data

Journal of Magnetic Resonance, 2020
Low-cost, user-friendly benchtop NMR instruments are often touted as a “one-click” solution for data acquisition, however insufficient peak dispersion in their spectra often reduces the accuracy of quantification and requires user expertise with ...
Yevgen Matviychuk, Ellen Steimers, Erik Von Harbou   +2 more
exaly   +3 more sources

Current applications of benchtop FT-NMR in food science: From quality control to adulteration detection [PDF]

Food Research International
The introduction of benchtop FT-NMR spectrometers in recent years represents a remarkable innovation in various fields, including the food sector. Modern benchtop FT-NMR spectrometers are low-field instruments, with a magnetic field ranging from 1 T to 2.
Giacomo Di Matteo, Silvia Grassi, Luana Bontempo   +2 more
exaly   +2 more sources