Portable NMR spectrometers

E. Danieli, J. Perlo, B. Blumich, F. Casanova (2010) Small magnets for portable NMR spectrometers, Angew. Chem. Intematl. Ed, 49, 4133 135, http //en.wikipedia.org/wiki/Magnetism (last aeeess March 23, 2014)... 

An interdisciplinary group at the Pacific Northwest National Laboratory in the United States recently accomplished NMR spectroscopy measurements withont magnet suggesting that the concept of an NMR in the hood capability may not be that far away [17-21]. The work conld lead to portable NMR spectrometers and possibly even small personalized spectrometers for medical diagnosis. The team demonstrated the performances of the technique in distinguishing between several similar hydrocarbon molecules— the first time that zero-field NMR has been successfully used for such complex chemical analysis. 

Fig. 4.7.7 A portable NMR system for measuring freeze damage in Navel oranges. The Halbach magnet is shown above the completed system with two Navel oranges for comparison. The complete system has the battery powered spectrometer electronics housed in a metal box and the system is run by a portable computer.

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