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Title: NMR at earth's magnetic field using para-hydrogen induced polarization
Author(s): Hamans, B.C. ; Andreychenko, A.; Heerschap, A. ; Wijmenga, S.S. ; Tessari, M.
Publication year: 2011
Source: Journal of Magnetic Resonance, vol. 212, iss. 1, (2011), pp. 224-228
ISSN: 1090-7807
DOI: http://dx.doi.org/10.1016/j.jmr.2011.06.011
Publication type: Article / Letter to editor

Please use this identifier to cite or link to this item : http://hdl.handle.net/2066/98133   http://hdl.handle.net/2066/98133

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Subject: Biophysical Chemistry
ONCOL 3: Translational research NCMLS 4: Energy and redox metabolism
Organization: Radiology
Biophysical Chemistry
Former Organization: Physical Chemistry/Biophysical Chemistry
Journal title:
Journal of Magnetic Resonance
Volume: vol. 212
Issue: iss. 1
Page start: p. 224
Page end: p. 228
Abstract:
A method to achieve NMR of dilute samples in the earth's magnetic field by applying para-hydrogen induced polarization is presented. Maximum achievable polarization enhancements were calculated by numerically simulating the experiment and compared to the experimental results and to the thermal equilibrium in the earth's magnetic field. Simultaneous 19F and 1H NMR detection on a sub-milliliter sample of a fluorinated alkyne at millimolar concentration ( approximately 10(18) nuclear spins) was realized with just one single scan. A highly resolved spectrum with a signal/noise ratio higher than 50:1 was obtained without using an auxiliary magnet or any form of radio frequency shielding.

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