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  • 1 Czechoslovak Academy of Sciences Institute of Nuclear Biology and Radiochemistry Prague Czechoslovakia
  • 2 Charles University Department of Analytical Chemistry, Faculty of Science Prague Czechoslovakia
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Gamma radiolysis of 10–2M aqueous oxygen-free tryptophan solutions irradiated at various pH values and in a N2O atmosphere was investigated. The values of the radiation losses of tryptophan and the yields of NH3 were determined. Using HPLC with an electrochemical detector the formation of hydroxylated radiation products of tryptophan was followed and the effect of pH on the radiolysis course discussed.