摘要
设计并合成了Ｎ－十八烷基水杨醛亚胺（ＯＤＳＡＩ），Ｎ－十八烷基苯甲醛亚胺（ＯＤＢＡＩ）两种新的亚胺化合物，并以此为中性载体，制成了ＰＶＣ膜ｐＨ电极。此电极在ｐＨ０．６～８．５的范围内，对氢离子呈现很好的能斯特响应，电极斜率为５２ｍＶ／ｐＨ。详细研究了电极的各种响应性能及响应机理。结果表明，该电极具有良好的稳定性、重现性、选择性。将其用于氢氟酸，乙酸等弱酸的电离常数的测定。
In this paper, a new kind of imine compounds, Noctadecylsalicylaldehydei\|\=mine and Noctadecylbenzaldehydeimine, were designed and synthesized for the preparation of the solvent polymeric membrane pH electrode. The electrode based on Noctadecylsalicylaldehydeimine showed Nernstian response to H+ over the range of pH \{0.6\}8.5 with a slop of 52 mV/pH. The response mechanism of the electrode was investigated in detail by A.C. impedance. The electrode has fair stability, reproducibility and selectivity. It was successfully applied to the determination of the disassociation constant of hydrofluoric acid.
出处
《分析科学学报》
CAS
CSCD
1999年第3期182-186,共5页
Journal of Analytical Science
基金
机械工业技术发展基金
湖南省自然科学基金
关键词
PVC膜
PH电极
中性载体
ODSAI
pH electrode, Neutral carrier, Noctadecylsalicylaldehydeimine
