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本文介绍了液态铀离子选择电极的制备及其功能。讨论了载体的孔隙度、载体长度、活性溶液中交换剂浓度和苯甲酸浓度等与电极功能的关系。电极斜率分别为56.4±2mV(活性溶液铀浓度5×10~(-4)M)和52±1mV(活性溶液铀浓度1×10~(-4)M),在2×10~(-6)-1×10~(-4)M铀浓度范围内呈线性关系。该电极具有灵敏、响应迅速、温度效应小、选择性好和使用寿命长等优点。用于矿水及工艺液流中微量铀的测定,获得了较满意的结果。
This article describes the preparation of liquid uranium ion selective electrode and its function. The relationship between the porosity of the support, the length of the support, the concentration of the exchanger in the active solution and the concentration of benzoic acid, and the function of the electrode are discussed. The slope of the electrode was 56.4 ± 2mV (5 × 10 -4 M) and 52 ± 1 mV (1 × 10 -4 M), respectively. Under the condition of 2 × 10 -6 ) -1 × 10 ~ (-4) M uranium concentration range of a linear relationship. The electrode has the advantages of sensitivity, rapid response, small temperature effect, good selectivity and long service life. For the determination of trace amounts of uranium in mineral water and process streams, more satisfactory results have been obtained.