固体基质室温燐光猝灭法测定人发和水中痕量汞  

The Method of Determining Trace Mercury in Hair and Water Samples by Solid Substrate-room Temperature Phosphorescence Quenching Method

作　　者：李志明[1] 刘佳铭[2] 

机构地区：[1]漳州职业技术学院食品与生物工程系,福建漳州363000 [2]漳州师范学院化学与环境科学系,福建漳州363000

出　　处：《分析测试技术与仪器》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)

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.

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 

分 类 号：O657.31[理学—分析化学]