流体室温磷光法测定痕量钛(IV)  

Determination of Trace Titanium by Flour -Room Temperature Phosohorimetry

作　　者：李文琦[1] 沈荔双 

机构地区：[1]漳州师范学院化学系,漳州363000 [2]荔城一中,莆田351100

出　　处：《漳州师范学院学报（自然科学版）》2002年第4期77-79,91,共4页Journal of ZhangZhou Teachers College（Natural Science)

摘　　要：基于曲拉通X-100和HAc-NaAc(pH=5．9)存在，不除氧条件下，曲拉通X-100能增敏钛(Ⅳ)-4，5-二溴苯基荧光酮流体室温磷光信号的增强效应，建立了曲拉通X-100增敏4，5-二溴苯基荧光酮的超高灵敏度流体室温磷光增强法测定痕量钛(Ⅳ)的新方法。钛(Ⅳ)量为3．2-6．4pg／mL与△Ip值成线性关系，其工作曲线的回归方程△Ip=-31．12+147．2CTi+(pg／mL)，r=0．9997，检出限为1．38pg／mL。该方法用于人发和茶叶中钛含量的测定，结果满意。A new highly sensitive method of flour room phosphorescence for the determination of trace Titanium has been proposed based on sensitization of tritonX-100 on F-RTP intensity of 4,5-dibromophenylfluorone-titanium in the presence of tritonX-100 and buffer solution of HAc-NaAc(pH=5.9) and oxygen unscavenger. The linear dynamic range of the method is 3.2~6.4pg/mL with a detection limit of 1.38pg/mL,and the regression equation of working curve isΔIp= -31.12 + 147.2CTi4+(pg/mL), correlation coefficient r=0.9997. This method has been applied in human hair and tea with successful result.

关 键 词：钛(Ⅳ) 室温磷光法 测定 流体 曲拉通X-100 痕量 二溴苯基荧光酮 超高灵敏度 增强效应 线性关系 回归方程 工作曲线 光信号 检出限 钛含量 增敏 p值 

分 类 号：O625.15[理学—有机化学] TQ15[理学—化学]