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用于制作铊(Ⅰ)离子选择电极的活性物质有杂多酸、离子缔合物和冠醚化合物等。其中以铊—0,0—二癸基二硫代磷酸盐与双冠醚15—冠醚—5的响应性能较好,线性响应范围的下限分别为3×10~(-6)M与2×10~(-6)M铊离子。作者之一曾用饱和漆酚冠醚(3,3′—正十五烷基二苯并30—冠醚—10)作为活性物质研制钾电极,该电极对铊(Ⅰ)离子亦具有良好的响应,线性响应范围的下限为1×10~(-6)M硝酸铊。
The active materials used to make thallium (I) ion selective electrode are heteropolyacid, ion association compounds and crown ether compounds. Among them, the response of thallium-0,0-didecyl dithiophosphate to 15-crown-5 of crown ether was better, and the lower limit of linear response range was 3 × 10 -6 M and 2 × 10 ~ (-6) M thallium ions. One of the authors once developed a potassium electrode with saturated urushiol crown ether (3,3’-n-pentadecyl dibenzo-30-crown-10) as an active substance which also has a good Response, the lower limit of the linear response range of 1 × 10 ~ (-6) M thallium nitrate.