痕量Fe(Ⅲ)催化动力学分析的新方法  

A New Method for Catalytic Kinetic Analysis of Trace Iron(Ⅲ)

作　　者：杨波[1] 张西军[1] 许鸿志[1] 

机构地区：[1]沈阳化工学院应用化学系,辽宁沈阳110021

出　　处：《辽宁大学学报（自然科学版）》2003年第1期70-73,共4页Journal of Liaoning University：Natural Sciences Edition

摘　　要：研究了硫酸介质中 ,铁 (Ⅲ )催化过氧化氢氧化百里酚蓝而使其褪色的新指示反应 ,建立了一种催化动力学光度法测痕量铁 (Ⅲ )的新方法 ,其灵敏度达到 3.4 7× 10 -10 g/mL ,测定范围是 0～ 0 .4 μgFe3 + /2 5mL .用于水样、人发中痕量铁 (Ⅲ )的测定 。The oxidation of thymol blue by hydrogen peroxide in sulfuric acid medium using Fe(Ⅲ) as catalyst was investigated in this paper. A new method for the determination of trace iron(Ⅲ) has been set up, The sensitivity of method is 3.47×10 -10 g/mL, The range of determination of iron(Ⅲ) is 0～0.4 μgFe 3+ /25mL. The method has been applied to the determination of trace iron(Ⅲ) in water samples, hair samples with satisfactory results.

关 键 词：催化动力学光度法 铁 百里酚蓝 裉色反应 含量测定 过氧化氢 活化能 

分 类 号：O614.811[理学—无机化学] O657.3[理学—化学]