申请人:BECKMAN INSTRUMENTS, INC.
公开号:EP0021595A1
公开(公告)日:1981-01-07
A solid state electrode for use in determining ion concentration in an aqueous solution comprising an electrically conductive element (1) a first lipophilic-hydrophobic (hereinafter referred to as LH) layer (2) in intimate contact with the element (1), and a second LH layer (3) in initimate contact with the first layer (2). The first LH layer (2) comprises an ahesive, LH polymer having an intrinsic viscosity of from about 0.4 to about 0.9 ml/g; and an LH plasticizer. The second LH layer(3) comprises an LH polymer having an intrinsic viscosity of from about 1 to about 1.5 ml/g; an LH plasticizer, and an LH ion-selective ligand of the ion to be determined.
Preferably, the first LH layer (2) further comprises an LH charge carrier.
As used herein, the term "lipophilic-hydrophobic (LH)" denotes an organic solvent soluble-water insoluble substance.
一种用于测定水溶液中离子浓度的固态电极,包括导电元件(1)、与元件(1)紧密接触的第一亲脂疏水(以下简称 LH)层(2)以及与第一层(2)初步接触的第二 LH 层(3)。第一 LH 层(2)包括一种粘性 LH 聚合物,其固有粘度约为 0.4 至 0.9 毫升/克;以及一种 LH 增塑剂。第二 LH 层(3)包括本征粘度约为 1 至约 1.5 毫升/克的 LH 聚合物、LH 增塑剂和待测离子的 LH 离子选择性配体。
第一 LH 层(2)最好还包括一个 LH 电荷载体。
本文所用术语 "亲油-疏水(LH)"指的是一种有机溶剂可溶-水不溶性物质。