Abstract
The concentration dependence of the fluoride ion spin-lattice relaxation rate has been observed by nuclear magnetic resonance experiments on samples of defatted and dried bone. The 19F spin-lattice relaxation rates increased linearly with the bone fluoride concentration. Different results were obtained from trabecular than from cortical bone. For samples from beagle dogs, the bulk fluoride concentrations measured by neutron activation analysis were 3.1+or-0.3 times greater in trabecular bone than in the corresponding cortical bone. The beagle spin-lattice relaxation data suggest that the microscopic fluoride concentrations in bone mineral were 1.8+or-0.4 times greater in trabecular bone than in cortical bone. It is concluded that the accumulation of fluoride impurities in bone mineral is non-uniform.
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