title: Only para-hydrogen spectroscopy (OPSY), a technique for the selective observation of para-hydrogen enhanced NMR signals.
abstract: An NMR method is reported for the efficient removal of signals derived from nuclei with thermally equilibrated spin state populations whilst leaving, intact, signals derived from para-hydrogen induced polarisation (PHIP) through gradient assisted coherence selection.
authors.affiliation: Department of Chemistry, University of York, Heslington, York, UK YO10 5DD.
authors.forename: Juan A
authors.initials: JA
authors.lastname: Aguilar
authors.forename: Paul I P
authors.initials: PI
authors.lastname: Elliott
authors.forename: Joaquín
authors.initials: J
authors.lastname: López-Serrano
authors.forename: Ralph W
authors.initials: RW
authors.lastname: Adams
authors.forename: Simon B
authors.initials: SB
authors.lastname: Duckett