离子选择性电极多次标准加入法BASIC程序新计算方法  

The New Calculation method of the BASIC Program on the Multiple Standard Addition Method of Ion-Selective Electrodes

作　　者：开小明[1] 

机构地区：[1]安庆师范学院化学系,安徽安庆246011

出　　处：《安庆师范学院学报（自然科学版）》2000年第4期86-87,共2页Journal of Anqing Teachers College(Natural Science Edition)

基　　金：安徽省高等学校基础课程教学实验室建设与改革项目资助!(NO:1 5)

摘　　要：最小二乘法拟合多次标准加入法求电极斜率 S值 ,发现 S并不收敛。前人所提出的计算方法也表明 ,电极电位的准确测量是影响分析结果准确度的关键。在解决电极电位准确测量的基础上 ,本文编制了用二分法求解电极斜率 S值 ,未知液浓度的 BASIC程序 ,经多年学生实验检验 ,方法准确可靠。It is found that s values of the electrode slope is not convergent by the method of least squares fitting straight line relation in the multiple standard addition method.The algorithms of the previous authors have showed that the precision of the electrode potentials is key of that of influent on analytical results.On the base of the precision measurement of the electrode potentials,a BASIC program has been made,s values of the electride slope and the unknown concentrations was solved by dichotomy method.It is demonstrated that the new calculation method is precise and reliable by students experimental checking for several years.

关 键 词：离子选择性电极 氟离子 多次标准加入法 减量法 二分法 

分 类 号：O65[理学—分析化学]