Application to Biochemical Systems
Most biochemicals contain, essentially, carbon, nitrogen, and oxygen. Some include sulfur, iodine, phosphorus, and metals such as iron, calcium, and sodium. It would be very desirable to study the Mössbauer spectroscopy of the major elemental constituents, but there are conditions that limit the use of a particular nuclide. The low-lying excited state should be less than 150 keV. It is also essential that the energy of recoil be small, which is related inversely to the nuclear mass, requiring high nuclear masses. Also, the source should be readily available to the user. The first two considerations eliminate observations of the Mössbauer effect with hydrogen, carbon, nitrogen, oxygen, sulfur, and phosphorus. However, the Mössbauer spectroscopy of iodine has been applied to inorganic compounds, but not as yet to biochemically important substances such as thyroglobin.
KeywordsIsomer Shift Biochemical System Porphyrin Ring Internal Magnetic Field Mossbauer Spectrum
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