申请人:HITACHI, LTD.
公开号:EP0300364A2
公开(公告)日:1989-01-25
A liquid film type, chloride ion-selective electrode is provided with the present disclosure, which comprises a sensitive film containing a polymeric material as a support film material, a tetraalkyl ammonium salt with four alkyl group each having 10-24 carbon atoms as a chloride ion-sensitive substance, and a mixture of a linear alcohol having a low dielectric constant with at least 10 carbon atoms and an organic compound having a dielectric constant higher than that of said linear alcohol as a plasticizer. This electrode has a high selectivity over lipophilic anions and hydrophilic anions, high accuracy on measurements, and a long life.
本公开提供了一种液膜式氯离子选择电极,它包括作为支撑膜材料的敏感膜,作为氯离子敏感物质的具有四个烷基且每个烷基具有 10-24 个碳原子的四烷基铵盐,以及作为增塑剂的具有至少 10 个碳原子的低介电常数线性醇和介电常数高于所述线性醇的有机化合物的混合物。这种电极对亲脂性阴离子和亲水性阴离子具有高选择性,测量精度高,使用寿命长。