催化剂动力学光度法测定痕量钛  

Catalytic kinetic optical determination of trace titanium

作　　者：高文玲[1] 刘新喜[2] 

机构地区：[1]河北师范大学化学系,石家庄050016 [2]河北师范大学学报编辑部,石家庄050016

出　　处：《固原师专学报》2001年第3期27-29,共3页Journal of Guyuan Teachers College

摘　　要：研究了在硝酸介质中,痕量Ti((Ⅳ))催化过氧化氢氧化甲基橙褪色的指示反应。研究了催化褪色反应的最佳条件,建立了测定痕量钛的新方法。方法的检出限为3.8×10^(-11)g Ti((Ⅳ))/mL,测定范围0～0.5μgTi((Ⅳ))/25mL,用于测定大米中的痕量Ti((Ⅳ)),获得了满意的结果。A kinetic spectrophotometric method for the determination of titanium(Ⅳ) has been established, based on its catalytic effect on the oxidation of methyl orange by hydrogen peroxide in nitre medium , Beer's law is obeyed in the concentration range of 0 - 0.5μgTi(Ⅳ) /25ml. The detection limt is 3.8×10-11gTi(Ⅳ)/mL.The determination of trace amounts of titanium in yict with satisfactory results.

关 键 词：催化动力学光度法 褪色反应 钛 甲基橙 含量测定 检出限 指示反应 

分 类 号：O614.411[理学—无机化学] O657.32[理学—化学]