摘要
Mo(Ⅵ)在pH 2～3,0.1mol/L KCl溶液中能被还原,其电位为-0.45V(对Ag/AgCl)。还原产物能沉积在滴汞上,它能催化N0_2^-的还原。NO_2^-的还原电位从-0.95V(对Ag/AgCl)正移到-0.81V。NO_2^-还原峰电流的大小正比于它的浓度,NO_3^-在很宽的浓度范围内不干扰。本文对NO_2^-和NO_3^-在Mo存在时的极谱行为作了探讨。
The reduction of Mo(Ⅵ) at -0.45V vs Ag/AgCl in a pH 2-3. Solution of 0.1 mol/1 KC1, results in a deposit on mercury electrode which catalyzes nitrite reduction. The potential of the nitrite reduction peak moves from -0.95V to -0.81V vs Ag/ AgCl. A peak is developed in direct proportion to nitrite concentration. Nitrate does not interfere in a wide concentration range. The mechanism for the Mo-catalyzed nitrite reduction is suggested.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
1989年第2期177-182,共6页
Acta Scientiarum Naturalium Universitatis Pekinensis
