Svistunenko D A
Izv Akad Nauk SSSR Biol. 1991 Jul-Aug(4):540-57.
Main principles of the way to decompose an EPR spectrum of a multicomponent system, irradiated at 77 K, into separate radiation-induced paramagnetic centre signals are given. The decomposition is possible due to the computer assistant spectra processing, and is based on different properties of different paramagnetic centres, namely, on different thermostability of the centres, on different rate of relaxation, and on different photosensitivity. Concrete examples of the EPR spectrum decomposition into different free radical signals are given for cases of murine liver and spleen irradiated at 77 K. Radiochemical yields of different free radicals, induced by gamma radiation at 77 K in whole biological tissues, were defined. The data on nature and properties of the paramagnetic centres induced by radiation in biological tissues are shortly reviewed.
给出了将77K辐照的多组分体系的电子顺磁共振（EPR）谱分解为单独的辐射诱导顺磁中心信号的主要方法原理。由于计算机辅助光谱处理，这种分解是可行的，并且基于不同顺磁中心的不同性质，即基于中心的不同热稳定性、不同的弛豫速率和不同的光敏性。给出了77K辐照的小鼠肝脏和脾脏情况下EPR谱分解为不同自由基信号的具体例子。定义了77K时γ辐射在整个生物组织中诱导的不同自由基的放射化学产率。简要回顾了生物组织中辐射诱导的顺磁中心的性质和特性的数据。
