离子注入修饰电极检测硝基苯

Determination of Nitrobenzene by Ion Implanted Electrode

离子注入是一种新技术，可按人们的意愿和需要，将不同的离子注入不同的基体电极表面，制成具有催化活性强、稳定性高、重现性好等特点的修饰电极。作者研究了离子注入钴和注入镍的玻碳电极在０．１ｍｏｌ／Ｌ ＨＡｃ－ＮａＡｃ缓冲溶液中硝基苯的行为及测定。结果表明，该电极有较高的催化活性、稳定性和重现性。其测定的线性范围对于注入镍和注入钴的玻碳电极分别为２．０×１０－５ ～４．0 ×１０－4 和６． ０×１０－5～８．0 ×１０－4 ｍｏｌ／Ｌ，用于分析纯苯胺中微量的硝基苯的测定，回收率在91.0％～１０８％之间。

In this paper, the behaviour and determination of nitrobenzene have been studied in 0. 1 mol/L HAc-NaAc(pH 4. 64) on Co ion implanted and Ni ion implanted electrodes. These electrodes have strong catalytic action, high stability and good reproducibility. The peak current is proportiona1 to the concentration of nitrobenzene in the range of 2. 0 ×10-5~ 4. 0 ×10-4 mol/L and 6. 0 ×10-5 - 8. 0 ×10-4 mol/L for Ni/GC and Co/GC, respectively. This method was applied to the determination of nitrobenzene in aniline with a recovery of 91.0% ~ 108 %.