EPR investigation of gamma-irradiated l

Add time:08/03/2019    Source:sciencedirect.com

The spectroscopic parameters of the paramagnetic species produced in gamma-irradiated l-citrulline, α-methyl-dl-serine, 3-fluoro-dl-valine and N-acetyl-l-cysteine were investigated at room temperature at a dose of 20 kGy by using EPR technique. The paramagnetic species were attributed to NH2CONH(CH2)3ĊNH2COOH, HOCH2ĊCH3COOH and HOĊHCCH3NH2COOH, CH3CH3ĊCHNH2COOH and SHCH2ĊNHCOCH3COOH radicals, respectively. EPR data of the unpaired electron with the environmental protons and 14N nucleus were used to characterize the contributing radicals produced in gamma irradiated compounds. In this paper, the stability of these compounds at room temperature after irradiation was also studied.

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