Electron paramagnetic resonance study of defects in gamma-irradiated marine mussel (Mytilus galloprovincialis) and scallop (Pecten jacobaeus) shells

Koseoglu R., Koksal E., Birey M.

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES, vol.59, no.11, pp.773-779, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 59 Issue: 11
  • Publication Date: 2004
  • Doi Number: 10.1515/zna-2004-1107
  • Journal Name: ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.773-779
  • Keywords: EPR, free radicals, gamma-irradiation, mussel, scallop, NUCLEAR DOUBLE-RESONANCE, SPIN-RESONANCE, ABSORPTION-SPECTRUM, SULFITE RADICALS, ESR-SPECTRA, CENTERS, CO2, EPR, RADIATION, CALCITE
  • Ankara University Affiliated: No

Abstract

EPR studies have been performed on some gamma-irradiated marine mussels (Mytilus galloprovincialis) and scallops (Pecten jacobaeus) from the families of Mytilidae and Pectinidae, respectively. Before gamma-irradiation, the EPR lines of Mytilus galloprovincialis indicated the existence of Mn2+ ions, which were not observed in the powders of scallop shells. gamma-irradiation induced defects in powders of Mytilus galloprovincialis shells, were attributed to orthorhombic CO3- axial CO3,3- orthorhombic CO2-, freely rotating CO2-, freely rotating SO2-, axial SO3-, isotropic PO42- and organic free radicals. gamma-irradiation induced defects in powders of Pecten jacobaeus shells were attributed to orthorhombic CO3-, axial CO33-, orthorhombic CO2-, freely rotating CO2-, freely rotating SO2-, and axial SO3-- free radicals. The EPR parameters of the free radicals were compared with literature data on similar defects.