Related Experiment Video
Updated: Jan 28, 2026
08:54
NMR Spectroscopy as a Robust Tool for the Rapid Evaluation of the Lipid Profile of Fish Oil Supplements
Published on: May 1, 2017
26.8K
Low-field NMR for quality control on oils
Thomas Rudszuck1, Eva Förster1, Hermann Nirschl1
1Institute for Mechanical Engineering and Mechanics, Karlsruher Institute of Technology (KIT), Karlsruhe, Germany.
Magnetic Resonance in Chemistry : MRC
|February 22, 2019
Summary
Low-field nuclear magnetic resonance (NMR) offers a versatile analytical method for characterizing various oils, including technical, crude, and edible types. This technique is crucial for quality control throughout the oil lifecycle, from production to final use.
Area of Science:
- Analytical Chemistry
- Materials Science
- Organic Chemistry
Background:
- Oils represent a diverse class of materials with extensive applications.
- Key subclasses include technical oils, crude oils, and edible oils.
- Understanding oil properties is essential for effective quality control.
Purpose of the Study:
- To explore the utility of low-field nuclear magnetic resonance (NMR) as an analytical tool for oil characterization.
- To emphasize the role of low-field NMR in quality control applications for various oil types.
- To highlight the necessity of a comprehensive understanding of oils and NMR measurements for developing robust quality control strategies.
Main Methods:
- Review of existing literature on low-field NMR applications in oil analysis.
- Discussion of the principles and capabilities of low-field NMR spectroscopy.
- Exploration of NMR data interpretation for oil quality assessment.
Main Results:
- Low-field NMR provides a rich methodological framework for oil characterization.
- The technique is applicable across different oil subclasses (technical, crude, edible).
- NMR is valuable for assessing oil quality, usability, and performance during production, formulation, and use.
Conclusions:
- Low-field NMR is a powerful and adaptable analytical tool for the comprehensive characterization of oils.
- Its application in quality control is significant, aiding in monitoring oil properties throughout their lifecycle.
- Further development and understanding of low-field NMR techniques will enhance its utility in the oil industry.
Related Concept Videos
01:05Quality Control
2.0K
Quality control is one of the three cyclical quality assurance activities that help keep a system under statistical control. Typical quality control activities include creating quality control charts, conducting proficiency testing, and documenting and archiving results.
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
2.0K
01:19Quality Assurance
1.7K
Quality assurance is the overarching term used to describe the activities employed to ensure the proper performance of a system. These activities can be classified into three categories: quality control, quality assessment, and internal corrective measures. Typically, these activities work cyclically: quality control is performed before and during the analysis, while quality assessment occurs during and after the investigation. Internal corrective measures are implemented based on the findings...
1.7K
01:19Quality of Water
556
In concrete preparation, the quality of water is paramount as it affects the strength and durability of the concrete. Potable water is usually preferred; however, it must not have excessive sodium or potassium to prevent compromising the concrete's integrity. Water quality is typically evaluated based on impurities such as dissolved solids, chlorides, and sulfates, and its pH value is ideally between 6 and 8. Even slightly acidic natural water may be acceptable unless it contains harmful...
556
01:04¹³C NMR: ¹H–¹³C Decoupling
1.8K
The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
1.8K
01:15¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR
1.7K
The axial and equatorial protons in cyclohexane can be distinguished by performing a variable-temperature NMR experiment. In this process, except for one proton, the remaining eleven protons are replaced by deuterium. The deuterium substitution avoids the possible peak splitting caused by the spin-spin coupling between the adjacent protons. The remaining proton flips between the axial and equatorial positions.
1.7K
01:25Design Example: Flow of Oil Through Circular Pipes
461
Understanding fluid flow behavior through pipes is critical in fluid mechanics, especially in applications like oil transportation through pipelines. Hagen-Poiseuille's law provides an exact solution derived from the Navier-Stokes equations for steady, incompressible, and laminar flow within a circular pipe. Hagen-Poiseuille's law helps determine the necessary pressure drop across a pipeline section by determining parameters like pipe length, radius, oil viscosity, and the desired volumetric...
461