Electron paramagnetic resonance identification of irradiated cuttlefish (Sepia officinalis L.)

Gamma-ray irradiated fresh cuttlefish bone display very intense Electron Pa ramagnetic Resonance (EPR) spectra, which could be attributed to five diffe rent centers, including CO2-, previously observed in irradiated carbonates. All centers display a positive correlation with the absorbed dose, describ ed by linear or saturation type dependencies. During 36 h of isothermal ann ealing at 100 degrees C, three of them decayed with time exponentially, one remained constant, while the EPR spectrum amplitude of the fifth increased . (C) 2000 Elsevier Science Ltd. All rights reserved.