Ti(Ⅳ)-Brˉ-HFInBr_4悬浮物光度法测定痕量钛(Ⅳ)  

Determination of Trace Ti(Ⅳ) by Centrifugal Spectrophometry for Ti(Ⅳ)-Brˉ-HFInBr_4

作　　者：杨天隆[1] 谢国平[1] 张文潜[1] 吴海波[1] 罗刘立[1] 魏常锦[1] 

机构地区：[1]漳州师范学院化学系,福建漳州363000

出　　处：《漳州师范学院学报（自然科学版）》2003年第2期73-76,共4页Journal of ZhangZhou Teachers College（Natural Science)

摘　　要：基于Ti(Ⅳ)能与曙红、溴离子形成可溶于乙醇的悬浮物,据此建立了悬浮物光度法测定痕量Ti(Ⅳ)的新方法。该悬浮物表观摩尔吸光系数ε530值为2.54×107L·mol-1·cm-1,线性范围为1～100ng/mL,检出限为8.2×10-9g/L。本法用于发样中Ti(Ⅳ)含量的测定,结果满意。Determination of Trace Ti(Ⅳ) by Centrifugal Spectrophometry for Ti(Ⅳ)-Brˉ-HFInBr4 has been found. Based on trace Ti (Ⅳ) can react with bromeosin to form an ion associated complex, which can dissolve in alcohol. The apparent molar absorptivity of ion associated complex was found to be 2.54×107L·mol-1·cm-1 at 530nm, and its linear range was 1-100μg/mL . The detection limit was 8.2 ×10-12 g/mL . This method has been applied to the determination of trace Ti (Ⅳ) in hair samples with satisfactory result.

关 键 词：钛 含量测定 悬浮物光度法 曙红 溴离子 Br^- HFInBr4 TI 表观摩尔吸光系数 

分 类 号：O614.411[理学—无机化学] O657.3[理学—化学]