Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Nukleonika

1 2013

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: fingernails

Sortuj według:

Ogranicz wyniki do:

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

Strzelczak G., Sterniczuk M., Sadło J., Kowalska M., Michalik J.

Nukleonika

2013

Vol. 58, No. 4

505--509

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.