Fast Reactions of Ascorbic Acid and Hydrogen Peroxide in Ice, a Presumptive Early Environment

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Science  17 Dec 1965:
Vol. 150, Issue 3703, pp. 1589-1590
DOI: 10.1126/science.150.3703.1589


Nonenzymatic decomposition of hydrogen peroxide proceeded more rapidly in ice than in liquid water. At 5 x 10-7M ferric chloride or 10-8M cupric chloride, breakdown of hiydrogen peroxide was significant at -11° and -18° but negligible at +1°C. Ascorbic acid oxidation was faster in ice both with or without added metalion. Nonparallel effects of metals and pH indicate, mechanism changes in ice.