自动滴汞电极的研制  

Automatic dropping mercury electrode

作　　者：周驰 谭爱民[2] 

机构地区：[1]长沙市自来水公司,长沙410007 [2]中南工业大学化学系,长沙410083

出　　处：《分析仪器》1999年第1期21-24,共4页Analytical Instrumentation

摘　　要：报导了一种新型自动滴汞电极。电极由单片机控制，通过步进电机驱动汞滴生成。汞滴的大小可以控制，并可进行滴汞与悬汞功能转换。电极与ＪＰ－１Ａ型极谱仪联用，汞滴重现性好，灵敏度高。对 ０．９５ ×１０^(－６)～ ７．５６ × １０^(－６) ｍｏｌ／Ｌ范围内的镉液进行测定，浓度与极限扩散电流相关系数为 ０．９９９６。An antomatic dropping mercury electrode controlled by a single-chip microcomputer is described.The formation of mercury drop is diven by a step motor. The size of mercury drop is controllable and has good reproducibility. The electrode can also be used as hanging mercury electrode. The cadmium (Cd^2+) solution has been measured by the electrode coupled with JP-1A polaro graph. The test results show that the electrode is sensitive and the relative coefficient between tea concentration and the limited dif fusion current is 0.9996 in the range of 0.95 × 10^-6 ~ 7.56 × 10^-6mol/L.

关 键 词：自动滴汞电极 悬汞电极 极谱法 极谱分析 

分 类 号：TH832.4[机械工程—仪器科学与技术] O657.14[机械工程—精密仪器及机械]