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研制铊(Ⅰ)离子选择性电极以沉淀膜为多,但性能不理想。最近有报道以双冠醚为活性物质的 PVC 膜铊(Ⅰ)电极性能较好。本文报道了一些以冠醚材料,四苯硼化铊为活性物质的 PVC 膜铊(Ⅰ)电极的研制,其中以4-甲基-二苯并-30-C-10和四苯硼化铊混合物者最好,响应快,再现性好,在1×10~(-2)—5×10~(-6)M 范围内符合 Nernst 关系。从测得的各项电极性能指标看,与双冠醚电极相同或稍优。
Development of thallium (Ⅰ) ion-selective electrode to precipitate more films, but the performance is not satisfactory. Recently, it has been reported that the membrane of thallium (Ⅰ) with PVC as active substance has better performance. In this paper, we report the preparation of some thallium (Ⅰ) PVC membranes with crown ether and tetraphenylbubber as active materials, in which 4-methyl-dibenzo-30-C-10 and thallium tetraphenylborate The mixture is the best, fast response, good reproducibility, in line with the Nernst relationship in the range of 1 × 10 ~ (-2) -5 × 10 ~ (-6) M. From the measured performance indicators of the electrodes, and double-crown ether electrode the same or slightly better.