{'fraction_non_alphanumeric': 0.037282518641259324, 'fraction_numerical': 0.026512013256006627, 'mean_word_length': 4.864077669902913, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Degradation of thymine in aqueous solution containing 3HHO. Comparison with 60Co gamma-radiolysis.

Aqueous adenine solutions of 5 × 10-4 M (containing 14C-adenine and buffered pH 7.0) were irradiated with 60Co gamma-rays and 3H beta-rays from tritiated water in the presence of N2, O2, N2O or t-BuOH-N2. Thin-layer chromatography (TLC) was carried out bidimensionally for separation of the radiolytically produced products and autoradiography was performed. Considerable differences were observed in the doseyield curves for the decomposition of adenine and for the product formation between gamma- and beta-radiolyses. As for the degradation yield, oxygen enhancement ratios, 3.19 in gamma-irradiation and 1.08 in beta-irradiation, were obtained at a dose of 3.0 × 103 Gy. Similar products were produced both under N2 and O2, but there were found a specific reaction of t-butanol radical with adenine, the high yield of hypoxanthine under N2O, and the higher degradation of the TLC origin-fixed products in beta-irradiation. The present results on adenine suggest, as reported previously for thymine, that a specific oxidative species is produced from water in beta-radiolysis but not in gamma-radiolysis.