Bevilacqua G, Biancalana V, Dancheva Y, Vigilante A, Donati A, Rossi C. Simultaneous Detection of H and D NMR Signals in a Micro-Tesla Field.
J Phys Chem Lett 2017;
8:6176-6179. [PMID:
29211488 DOI:
10.1021/acs.jpclett.7b02854]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We present NMR spectra of remote-magnetized deuterated water, detected in an unshielded environment by means of a differential atomic magnetometer. The measurements are performed in a μT field, while pulsed techniques are applied-following the sample displacement-in a 100 μT field, to tip both D and H nuclei by controllable amounts. The broad-band nature of the detection system enables simultaneous detection of the two signals and accurate evaluation of their decay times. The outcomes of the experiment demonstrate the potential of ultra-low-field NMR spectroscopy in important applications where the correlation between proton and deuteron spin-spin relaxation rates as a function of external parameters contains significant information.
Collapse