程控电流示波计时电位法  

Oscillographic Chronopotentiometry with Programmed Current

作　　者：田敏[1] 郑建斌[1] 于科岐 祁洪 高鸿[1] 

机构地区：[1]西北大学电分析化学研究所

出　　处：《分析试验室》1998年第4期37-39,共3页Chinese Journal of Analysis Laboratory

摘　　要：使用计算机产生极化电流具有纯度高、稳定性好和波形形状种类多等优点。研究了极化电流的频率、波形和相角对示波图的影响。对Ｃｄ２＋的测定的线性范围为２×１０－５～２×１０－４ｍｏｌ／Ｌ，相关系数为０．９９７。该方法有希望用于分析测试和动力学方面的研究。programmed current was produced by a computer.The current had advantages of good repeatability and stability,and many desired types of current could be obtained.The effect of galvanostat circuit,frequency and phase angle of programmed current on the oscillogram was studied.The linear range for determination of Cd 2+ in 0.5mol/L NH 4Ac was 2×10 -5 ～2×10 -4 mol/L and the correlation coefficient was 0.997.The method can be applied to actual analysis and kinetic research.

关 键 词：程控电流 示波计时电位法 示波分析 镉 分析 

分 类 号：O657.1[理学—分析化学] O614.242[理学—化学]