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本文综述北京大学化学系电化学分析小组二十多年来极谱催化波的研究工作。将已研究的二十五个元素的催化体系、灵敏度、催化波的性质和应用列于表1.催化波有足够的灵敏度和选择性,适用于半导体材料、高纯金属、合金、矿物、矿石、水、土壤等各方面的痕量分析。关于催化波的机理,用测量催化电流、悬汞电极、i~t曲线、循环伏安、电流积分、放射性示踪诸方法研究了反应历程、电极活性络合物的组成、稳定常数、化学反应的速率常数和吸附现象。介绍了现正着重研究稀土元素的极谱催化波的情况。
This article reviews the work of polarographic catalytic wave for more than two decades in the Department of Chemistry, Peking University. The catalytic system, sensitivity, catalytic wave properties and applications of the twenty-five elements studied are listed in Table 1. The catalytic wave has sufficient sensitivity and selectivity for use in semiconductor materials, high purity metals, alloys, minerals, ores , Water, soil and other aspects of trace analysis. With regard to the catalytic wave mechanism, the reaction process, the composition of the active complex of the electrode, the stability constants, the chemical reaction, the reaction time and the reaction temperature were investigated by means of measuring catalytic current, hanging mercury electrode, i ~ t curve, cyclic voltammetry, current integral and radioactive tracing. The rate constant and adsorption phenomena. The situation of the polarographic catalytic wave now focusing on rare earth elements is introduced.