EPR study of γ-irradiated feather keratin and human fingernails concerning retrospective dose assessment

• Autorzy: Strzelczak G. , Sterniczuk M. , Sadło J. , Kowalska M. , Michalik J.
• Języki publikacji: EN

Abstrakty

EN

In this paper we report the results of comparative EPR studies on free radicals generated in γ-irradiated powder samples of feather keratin powder and human fingernails. In degassed samples of both materials irradiated at 77 K the major component of EPR spectrum represents sulphur-centred radicals in cysteine residues. It quickly decays after air admission at room temperature while a singlet assigned to semiquinone melanin radicals remains the only one seen. The singlet recorded with fingernails decays slowly at room temperature and might be potentially useful for dose assessment by EPR. The advantages and limitations of fingernails EPR dosimetry are discussed.

Słowa kluczowe

EN

EPR spectroscopy; keratin; melanin; radicals; fingernails; dosimetry

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2013
• Tom: Vol. 58, No. 4
• Strony: 505--509
• Opis fizyczny: Bibliogr. 19 poz., rys.

Twórcy

autor

Strzelczak G.

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

autor

Sterniczuk M.

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

autor

Sadło J.

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

autor

Kowalska M.

• Central Laboratory for Radiological Protection, 7 Konwaliowa Str., 03-194 Warsaw, Poland

autor

Michalik J.

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

Bibliografia

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