近年来 ,有关活性氧的产生及其对生物分子的损伤机理研究受到各学科的普遍重视 ,许多疾病与活性氧的介入有密切关系 [1 ] ,尤其是羟自由基 (OH· )。作为最活泼的活性氧自由基并没有专门的清除酶 ,它与任何生物分子都以极快的反应速率发生反应 ,而 H2 O2 及 O- 2· 。等的反应 In recent years, the research on the generation of reactive oxygen species and its damage mechanism to biomolecules has been paid more and more attention in many disciplines. Many diseases are closely related to the intervention of active oxygen [1], especially hydroxyl radical (OH ·). As the most active reactive oxygen species and no special scavenger enzyme, it and any biological molecules are very fast reaction rate reaction, and H2O2 and O-2 ·. The reaction