摘要
研究了亚硝酸根（ＮＯ－２）在磷钼镍杂多酸－聚吡咯膜修饰玻碳电极（ＰＭｏ１１ＮｉＯ３９－ＰＰＹ／ＧＣ上的电化学行为。结果表明，ＰＭｏ１１ＮｉＯ３９－ＰＰＹ／ＧＣ对酸性水溶液中的ＮＯ－２具有良好的电催化还原作用，与空白ＧＣ电极相比，降低过电位１０００ｍＶ以上，而且ＮＯ－２的浓度在１．０×１０－５～１．０×１０－２ｍｏｌ／Ｌ范围内，催化峰电流与ＮＯ－２浓度呈良好的线性关系，检测限可达５．０×１０－６ｍｏｌ／Ｌ，用于环境水样中ＮＯ－２含量的测定，结果良好。
he electrochemical behaviour of nitrite at
molybdonickelophosphatepolypyrrole film modified glassy carbon electrode
(PMo11NiO39PPY/GC ) has been studied.The film modified electrode has good stability and
high electrocatalytic activity toward the reduction of nitrite in acidic aqueous solution.The
reduction peak potential shifts positively by 1000mV.The modified electrode can be used for
determination of nitrite in the concentration range of 1.010-51010-2mol/L with the correlation
coefficient of 0.996,the detection limit is 5.010-6mol/L.This method has been applied
successfully to the analysis of nitrite in polluted water.
出处
《分析试验室》
CAS
CSCD
1999年第3期45-48,共4页
Chinese Journal of Analysis Laboratory
关键词
磷钼镍杂多酸
聚吡咯
修饰电极
亚硝酸根
测定
Molybdonickelophosphate
heteropoly acid
polypyrrole
chemically modified electrode
nitrite
