Computer Program에 의한 란탄계 선택성 막전극의 감응전위 측정 = The Measurements of Response Potentials of Selective Membrane Electrodes with Lanthanide Salts by Computer Program

다국어 초록 (Multilingual Abstract)

Having made the selective membrane electrodes with lanthanide fluoride and lanthanide oxalate, the response potentials of 〔F＾-〕 and 〔C_2O＾2-_4〕 were measured with the selective membrane electrodes and the measured data were treated by using computer program. It was concluded that the analytical experiment done by the application of A/D converter to the personal computer reduced the analytical error and enhanced the reproductivity by means of the development project of computer program.
The results were as follows:
1. When the additional ratio of matrixes is 0.1%, the response potentials of 0.1% matrixes were better than 0.3% in the response potentials.
2. The response values of the membrane electride mixed with silicon rubber as matrix is higher than those of the electrode mixed with PVC.
3. The response values of the membrane electrode with reference electrodes were better than that of membrane electrode with calomel electrodes and membrane electrodes.
4. Contrary to the calomel and membrane electrodes the denser concentration of the reference electrode, the less-the electric potential.
5. The response potentials of the insoluble membrane electrodes were inveresely proportional to the size of metallic ions.
6. The stability was the highest, as membrane eletrodes were in to the solution over 24 hours.
7. The response potential of La_2(C_2O_4)_3 and LaF_3 were stable between the range of pH 4.5∼8.0 and pH 3.5∼7.5 respectively.