摘要
采用邻苯撑一二氧双〔a-(4~1-丙酰基苯并-15-冠-5)〕作中性载体,邻苯二甲酸二正辛酯作增塑剂,制备的十六烷基吡啶离子选择性电极,其线性范围为1.0×10^(-6)～5.0X10^(-4)mol·dm^(-3),斜率为56±1mV,pH范围为6～8,常见的无机离子无干扰,阳离子表面活性剂有较大的干扰。电极用于电位滴定法测试十六烷基吡啶的指示电极有较好的准确度,回收率的平均值为99.7％。
A PVC membrane ion-selective electrode for hexadecyl pyridine chloride si prepared.The active substance of the electrode is neutral carrier 0-phenylene-dioxygen bis [α-(4'propionyl ben2c-lE-crown-s)] .Di-n-octyl phthalate is used as plasticipzer. The electrode has a Nernstian response between l.0×10-6 - 5.0×10-4mol/dm8, a pH working range of 6-8 and high selectivity towords inorganic cations.The other cationic surfactants interfer. The lectrode is suitable as end-point detector in the potentiometric titration of the hexadecyl pyridine chloride.
出处
《河南大学学报（自然科学版）》
CAS
1991年第3期64-66,共3页
Journal of Henan University:Natural Science
关键词
离子选择性
电极
十六烷基
吡啶
ion-selective electrode, crown ether, hexadecyl pyridine chloride
