申请人:Nova Biomedical Corporation
公开号:US04770759A1
公开(公告)日:1988-09-13
An electrode for determining the lithium content of a liquid sample to be tested, has a membrane containing a lithium ion selective compound and a plasticizer, the improvement wherein the plasticizer is a liquid, lipophilic dialkyl phthalate compound or a liquid phenyl phenyl ether compound that has a strong electron withdrawing group at an ortho position on one of the phenyl rings. The ion selective compound has the formula: ##STR1## wherein A is an alkyl group having between 8 and 16 carbon atoms, B is an alkyl group having between 1 and 4 carbon atoms, and each C and D is, independently, a hydrogen atom or an alkyl group having between 1 and 16 carbon atoms, provided that both C and D are not alkyl groups having greater than 4 carbon atoms.
用于测定液态样品中锂含量的电极,具有含有锂离子选择性化合物和增塑剂的膜,其中改进在于增塑剂是一种液态的、亲脂性的双烷基邻苯二甲酸酯化合物或液态的苯基苯醚化合物,其中在其中一个苯环的邻位上有强的电子吸引基团。选择性化合物的化学式为: ##STR1## 其中A为含有8至16个碳原子的烷基,B为含有1至4个碳原子的烷基,每个C和D独立地为氢原子或含有1至16个碳原子的烷基,前提是C和D均不是含有大于4个碳原子的烷基。