title: Phosphorus-31 solid-state nmr in high-field gradients: prospects for imaging bone using the long echo-train summation technique (LETS).
abstract: Stray-field techniques are reported for 31P studies of solids for a variety of compounds including bone, bone meal and calcium hydroxyapatite. Long Hahn echo trains produced by the application of many pulses were used as in the long echo-train summation technique. Double-resonance enhancements of 31P by use of both direct and indirect experiments were attempted on a sample of NH4PF6:31P[19F] double resonance produced, at most, a 26% increase in the initial level of the 31P echo signal.
authors.affiliation: Department of Chemistry, University of Surrey, Guilford, Surrey, GU2 5XH, England.
authors.forename: D G
authors.initials: DG
authors.lastname: Gillies
authors.forename: B
authors.initials: B
authors.lastname: Newling
authors.forename: E W
authors.initials: EW
authors.lastname: Randall
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry; D000818:Animals; D001842:Bone and Bones / Q000737:chemistry; D002130:Calcium Phosphates / Q000737:chemistry; D002645:Chickens; D017886:Durapatite / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D010710:Phosphates / Q000737:chemistry*; D010759:Phosphorus Isotopes
chemical_list: D017607:Aluminum Compounds; D002130:Calcium Phosphates; D010710:Phosphates; D010759:Phosphorus Isotopes; D017886:Durapatite; C012714:aluminum phosphate