摘要
报道了５，１１，１７，２３－四（１，１．二甲基乙基）－２５，２７－二羟基－２６，２８－二［（２－乙基硫）乙氧基］杯［４］芳烃为银离子载体的ＰＶＣ膜电极的研制。该银离子选择电极不仅对银离子有良好的灵敏度和高选择性，在１０－１～１０－５ ｍｏｌ／Ｌ浓度范围内有良好的线性，能斯特响应为５６ ｍＶ／ｐｃａｇ·（２５℃），碱金属、碱土金属及过渡金属离子不干扰银的测定；而且对某些阴离子也表现出近似能斯特响应（５０ｍＶ／ｐｃｘ）。用该电极对人工试样中银含量进行测定，结果与原子吸收光度法相符。
A novel thioether - substituting calix [4] arene derivative 5, 11, 17, 23 - tetrakis (1, 1 - dimethyl ethyl ) - 25, 27- dihydroxy -bis [ (2-ethylthio) ethoxy ] calix [4] arene has been tested as ionophore in a Ag + - PVC electrode. The Ag -+ PVC electrode exhibited a good linear response of 56 mV/pcAg+ in the range of 10 -5 - 10 -l mol/L, and fairly good dis criminating ability towards Ag + in comparison with some ions of alkali, alkaline earth, transition and heavy metals. The electrode displayed a good response to some an- ions(50 mV/pcx ) too. The analysis result of a synthetic sample by this method was in agreement with that by atomic absorption spectrometry.
出处
《分析测试学报》
CAS
CSCD
2000年第6期17-20,共4页
Journal of Instrumental Analysis
基金
国家自然科学基金资助项目(29975014)
关键词
杯[4]芳烃
银离子选择电极
银
测定
Thioether
Calix[4]arene
Silver ion
Anion
Ion selective electrode
