无机偶合流动注射化学发光测定钛的研究  

Determination of Ti by flow injection chemiluminesence based on coupled reaction

作　　者：李卫华[1] 

机构地区：[1]江苏技术师范学院化学系,常州213001

出　　处：《分析试验室》2005年第2期32-34,共3页Chinese Journal of Analysis Laboratory

基　　金：黑龙江省自然科学基金(B0110)

摘　　要：基于钛(Ⅲ)对铬(Ⅵ)氧化I-产生I2的诱导作用,和I2氧化鲁米诺产生化学发光的反应,建立了无机偶合反应流动注射化学发光测定痕量钛的新方法。方法线性范围为1×10-9～1×10-5g/mL,RSD=3.0%(n=11,ρ=1×10-7g/mL),检出限为4.0×10-10g/mL。方法用于人发样品中钛的测定。A new method for determination of Ti (Ⅲ) by flow injection chemiluminesence was developed. It was based on the oxidation of I^- by K_2Cr_2O_7 induced by (Ti(Ⅲ),) and the subsequent chemiluminesence reaction of luminol oxidized by I_2. The CL intensity was linear to (Ti(Ⅲ)) concentration over the range of 1×10^(-9)～1×10^(-5) (g/mL). The detection limit was 4×10^(-10) g/mL, the relative standard deviation was 3.0% for 11 measurements of 1×10^(-7) g/mL Ti(Ⅲ) samples. The method was used to determine Ti in hair samples with satisfactory results.

关 键 词：偶合反应 流动注射 化学发光 钛 

分 类 号：O657.3[理学—分析化学]