催化动力学光度法测定井水中痕量锰  

Determination of trace Manganese by Catalytic Kinetic Spectrophotometry

作　　者：柳玉英[1] 王发刚[1] 孟波[1] 周丽[1] 

机构地区：[1]山东工程学院化工系,淄博255012

出　　处：《分析试验室》2001年第1期24-25,共2页Chinese Journal of Analysis Laboratory

摘　　要：研究了在 NH3· H2 O- NH4 Cl介质中锰催化过氧化氢氧化苋菜红的褪色反应及其动力学条件 ,测定了反应级数和表观活化能 ,建立了测定痕量锰的新方法。该方法的检出限为 2 .7× 1 0 -4 μg/m L Mn,线性范围为 0～ 2 .4μg/2 5m LMn。用于测定井水中痕量 Mn,与原子吸收法的测定结果一致。Decolourisation of amaranth by oxidation of hydrogen peroxide in ammonium muriate medium using manganese as catalyst was investigated. The reaction order and the apparent activation energy were determined. A new method based on this for determination of Mn was set up with detection limit of 2.7×10 -10 g/mL Mn and linear range of 0～2.4 μg/25 mL.The method was used to determine trace Mn in well water in good agreement with the results determined by AAS.

关 键 词：催化光度法 苋菜红 锰 井水 痕量分析 

分 类 号：R123.1[医药卫生—环境卫生学] O614.711[医药卫生—公共卫生与预防医学]