Abstract
γ-irradiated bone tissue annealed at different temperatures is studied by EPR. In powder samples the annealing-induced changes of the EPR spectra are mainly determined by sharp growth of a signal caused by the products of thermal decay of an organic component in the tissue. This signal considerably complicates the analysis of the EPR spectrum shape for the annealed samples. On the other hand, in the spectra of the plates of bone tissue a change in the lineshape of the EPR signal from CO 2 − radicals after annealing is more pronounced than in powder, and it is attributed to the change in the contributions from axial and orthorhombic CO 2 − radicals. The analysis of different radicals concentrations vs. annealing temperature revealed above 210 °C the temperature-induced transformation of orthorhombic CO 2 − radicals into axial ones in bone tissue which (together with organic component) is responsible for the changes of EPR lineshape at annealing.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
