摘要
研究了痕量Mn2 + 催化KIO4 氧化棉红的反应动力学 ,测定了反应级数、表观速率常数和表观活化能 ,确立了速率方程 ,探讨了反应机理 ,建立了测定痕量锰的方法 ,方法灵敏度为 7.5×10 - 9g·L- 1,线性范围为 0 .0～ 6.0× 10 - 6g·L- 1。方法选择性好 ,直接用于化学试剂、井水及蒸馏水中痕量锰的测定 。
In this paper, the catalytic kinetics of the reaction system of cotton red Mn(Ⅱ) KIO 4 is studied. It is found that traces of manganese(Ⅱ) catalyze the oxidation of cotton red by potassium periodete in an HOAC NaOAc medium. The apparent activation energy, the order of recation, the apparent reaction rate constant and the reaction rate equation were determined. A high sensitivity catalytic kinetic photometric method for determining traces of mangamese is described. The sensitivity of method is 7.5×10 -9 g·L -1 . The linear range of determination is 0.0~6.0×10 -6 g·L -1 . The method has been applied to the determination of manganese in chemicals, well water and distilled water with satisfactory results.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2001年第8期369-371,共3页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
