Miniature nuclear magnetic resonance spectrometer using a partially enclosed permanent magnet. Issue 3 (4th May 2017)

• Record Type: Journal Article
• Authors: Lu, Rongsheng; Zhou, Xinlong; Yin, Qifeng; Hu, Jianxiong; Ni, Zhonghua
• Is Part Of: Instrumentation science & technology. Volume 45:Issue 3(2017)
• Page Start: 324
• Page End: 337
• Publication Date: 2017-05-04
• Subjects: Microcoil -- nuclear magnetic resonance (NMR) -- permanent magnet -- relaxation time; Scientific apparatus and instruments -- Periodicals; 681.2
• DOI: 10.1080/10739149.2016.1219366
• Languages: English
• ISSNs: 1073-9149

Abstract

ABSTRACT: Conventional nuclear magnetic resonance (NMR) instruments are limited by their large volume volume. A miniature NMR spectrometer is reported using a partially enclosed miniature permanent magnet and a low-cost solenoid microcoil probe. The miniature NMR spectrometer uses a sample volume smaller than conventional NMR spectrometers by a factor of 1000. Transverse relaxation times were obtained by the miniature spectrometer using 150 nL of 40 mM copper sulfate, 1 M aqueous sucrose, absolute ethanol, and deionized water. The results demonstrate that high signal-to-noise ratios were obtained. The results were also compared with a commercial NMR spectrometer and suitable accuracy of the laboratory-constructed device was obtained. The miniature NMR spectrometer was employed for the characterization of heated soybean oil. The reported miniature NMR spectrometer is anticipated to have applications for onsite detection.