摘要
本文研究了银（Ⅰ）－硫脲－四正丁基溴化铵体系的电致化学发光（ＥＣＬ）。发现在正矩形脉冲下，银对含有硫脲的ＴＢＡＢｒ溶液的ＥＣＬ有明显催化作用，银（Ⅰ）的浓度在１．４×１０￣（－８）～３．５×１０￣（－６）ｍｏｌ／Ｌ范围内与ＥＣＬ强度呈良好线性关系。检出限为９．０×１０￣（－９）ｍｏｌ／Ｌ相对标准偏差为５％。用于天然水中银的测定，获得较满意的结果。
In this paper, electrogenerated chemilu-minescence(ECL) of the system of Ag(Ⅰ)-thiourea-tetra-n-butylammonium bromide(TBABr)was studied.while adding rectan-gular pulse with a pulse amplitude of 1.5Vand the duty ratio of 0.2 to the electrodesystem of Pt-Pt-AgCl/Ag,it was found thatAg(Ⅰ) could catalyze the process of ECL ofthe solution of TBABr containing thiourea.There is a linear relationship between ECLsignal and the concentration of Ag(Ⅰ) inthe range of 1.4 × 10￣(-8)～3.5× 10￣(-6)mol/L.The detection limit is 9.0×10￣(-9)mol/L. TheRSD is 5%.The method has been applied tothe determination of Ag(Ⅰ)in water withsatisfactory results.
出处
《分析试验室》
CAS
CSCD
北大核心
1995年第5期48-50,共3页
Chinese Journal of Analysis Laboratory
关键词
电致化学发光
银
天然水
TBAI
Electrogenerated chemilumi-nescence
silver determination
tetra-n-buty-lammoniun bromide
water
