The study of the Fenton reaction is important due to the carcinogenic character of its products . The hydroxyl radicals produced as a result of radiolysis and the Fenton reaction have the ability to oxidize and damage DNA as shown in Figure . The reaction between guanine and hydroxyl radicals, for example, produce 8-oxoguanine -a mutated base. 8-oxoguanine can then lead to transversion mutations where the base guanine (G) is converted to thymine (T) .