机构地区: 西北民族大学化学系
出 处: 《西北师范大学学报(自然科学版)》 2004年第3期53-56,共4页
摘 要: 研究了在碱性条件下,维生素K3(以下简称VitK3)对Cu2+催化H2O2和NaSCN的化学振荡反应(以下简称铜体系)的影响.结果表明,VitK3的加入会使振荡图形的周期和振幅均增大,且VitK3浓度与加入VitK3后第一周期的改变值(ΔT1)呈良好的线性关系.线性范围分别为5 26×10-7~2 17×10-4mol/L和3 21×10-4~8 87×10-3mol/L,相关系数分别为0 9981和0 9975.初步探讨了VitK3对铜体系振荡反应影响的机理. The effects of vitamin K3 on the c opper(Ⅱ)-cataly zed oscillating reaction between hydrogen peroxide and sodium thiocyanate are studied.Results show that adding of vitamin K3 can perturb the oscollating period and amplitude.The changes of the oscillation period are linearly proportional to the vitamin K3 concentration both from 5.26×10-(-7_ to 2.17×10-(-4_ mol/L and from 3.21×10-(-4_ to 8.87×10-(-3_ mol/L ,respectively. The related coefficients are 0.998 1 and 0.997 5. Some aspects of the interaction of vitamin K3 with the oscillation chemical system are discussed.