机构地区: 西北师范大学化学化工学院
出 处: 《西北师范大学学报(自然科学版)》 2008年第6期62-65,共4页
摘 要: 研究了对氨基苯磺酰胺(简称磺胺)对B-Z体系非平衡定态的扰动.结果表明,在出现分岔现象的临界温度时体系对磺胺的扰动最为敏感,电势的变化值与所加磺胺浓度的负对数呈良好的线性关系,其线性范围为3.16×10-6~7.94×10-9mol.L-1,最低检出限为3.75×10-9mol.L-1. The present paper reports the determination of sulfanilamide by the bifurcation point in B-Z oscillating system.Results show that in the vicinity of a steady non-equilibrium stationary state close to the bifurcation point,the potential changes of system are linearly proportional to the concentrations of sulfanilamide in range of 3.16×10-6~7.94×10-9 mol·L-1 with a detection limit of 3.75×10-9 mol·L-1.