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近十几年来,我国离子选择电极分析技术得到迅速发展,离子选择电极的品种已有二十多种,在地质、冶金、石油、化工、海洋、土壤、医学卫生和环境保护等领域中获得了广泛应用。随着科学研究工作中的分析测试和生产流程的自动控制等方面的需要,要求有0.1mV的准确度、能直读离子浓度和双端输入阻抗大于1×10~(12)Ω的测试仪器。现将苏州市计量仪器实验工厂生产的双高阻直读浓度数字式离子计(定型为SL-2型离子计)的测量原理与应用介绍如下。
In recent ten years, ion selective electrode analysis technology has been developed rapidly in China. There are more than twenty kinds of ion selective electrode species in the field of geology, metallurgy, petroleum, chemical industry, marine, soil, medical health and environmental protection widely used. With the scientific research work in the analysis of testing and production processes, such as the need for automatic control, requires 0.1mV accuracy, direct reading ion concentration and double-ended input impedance greater than 1 × 10 ~ (12) Ω test equipment . Now measuring instruments in Suzhou City Experimental Factory production of double high resistance direct reading concentration Digital Ion Meter (stereotypes SL-2-type ion meter) measurement principle and application are described below.