摘要
基于水杨基荧光酮羧甲基纤维素铅发光分子微球（Pb（CMC）2-THBF）在滤纸基质上可发射强而稳定的室温燐光，由此建立了Pb（CMC）2-THBF固体基质室温燐烧猝灭测定痕量汞的新方法．Hg^2＋的含量在2．5～100．0（pg／mL）内与△Ip值成线性关系，其线性回归方程为△Ip=12．73＋0．4699CHg^2＋（pg／mL），r=0．9991，检出限为3．2×10^-12 g／mL．该方法用于人发和水样中痕量汞的测定，结果满意．同时探讨了固体基质室温燐光猝灭测定痕量汞的机理．
A new method for the determination of trace mercury by solid substrate room temperature phosphorescence quenching is established based on Pb（CMC）2-THBF can emit intense and stable solid substrate room temperature phosphorescence （SS-RTP） on filter paper. The linear range of this method is 2.5-100.0 pg/mL of Hg^2＋ , with a detection limit （LD） of 3.2×10^-13 g/mL, and the regression equation of working curve is △Ip = 12.73＋0. 4699 CHg^2＋ （pg/mL）, r=0. 9991. This method has been applied to the determination of trace mercury in hair and water samples with satisfactory results. The mechanism of SS- RTP emission is also discussed.
出处
《分析测试技术与仪器》
CAS
2007年第3期177-181,共5页
Analysis and Testing Technology and Instruments
基金
福建省自然科学基金计划资助项目(项目编号:D0510027)
关键词
汞
水杨基荧光酮
羧甲基纤维素
固体基质室温燐猝灭法
mercury
salicyl fluorones
carboxymethyl cellulose
solid substrate-room temperature phosphorescence quenching method
