水杨醛-2-羧基苯腙与汞的荧光反应及应用  

Fluorescence Reaction of Salicyladehyde-2-carboxy-phenylhydrazone with Mercury Ions and Its Application

作　　者：李惠成[1] 仵博万[1] 张兵[1] 刘建宁[1] 

机构地区：[1]陇东学院化学化工学院,甘肃庆阳745000

出　　处：《分析测试学报》2008年第1期91-93,共3页Journal of Instrumental Analysis

基　　金：甘肃省教育厅基金资助项目(029-04)

摘　　要：合成了新荧光试剂水杨醛-2-羧基苯腙（SACPH）。研究了试剂与汞的荧光反应新体系的最适宜条件。在pH6．0的NH4Ac—HCl缓冲溶液中，该试剂与汞离子形成稳定的络合物，金属与试剂的组成比为1：1，λex/em=316．8／456．0nm。所建立汞的荧光分析方法的线性范围为0．5～100．0μg／L，检出限为0．2μg／L，方法成功地应用于矿泉水、纯净水及工业废水中痕量汞的测定。A new fluorescent reagent, salicyladehyde-2-carboxy-phenylhydrazone （SACPH）, was synthesized and the optimum conditions for its fluorescence reaction with mercury ions （Hg^2＋ ） was studied in detail. Based on the stable Hg^2＋- SACPH complex, a spectrofluorimetric method was developed for the determination of Hg^2＋ in a buffer solution（ NH4Ac - HCl） of pH 6. The fluorescent excitation and emission wavelengths of the complex were at 316.8 nm and 456.0 nm, respectively, The molar ratio of aluminium to reagent was found to be 1 ： 1. The linear range of the method was 0.5 - 100.0 μg/L and the detection limit was 0.2 μg/L. The proposed method has been used for the determination of trace mercury in mineral water, purified water and industrial waste water with satisfactory results.

关 键 词：水杨醛-2-羧基苯腙 汞 荧光分析法 

分 类 号：O657.3[理学—分析化学] O614.243[理学—化学]