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本文介绍一种建立电解质电导率标准的相对方法,该法以1.0、0.1和0.01D的高纯度氯化钾溶液在25℃下的电导率为基准,测定电导池常数J_t,然后测出上述各浓度溶液在15℃、18℃、20℃、35℃下的电导率。测量时使用感应分压器作为电导电桥的比例臂。对于1.0、0.1和0.01D溶液而言,方法总的不确定度为±(0.03～0.05)%,而对于0.001D溶液则为±0.07%。文中还讨论了影响测量值的因素。
This article describes a relative method of establishing a standard electrolyte conductivity, which method to 1.0, 0.1 and 0.01D high purity potassium chloride solution at 25 ℃ conductivity as a benchmark, the conductivity cell constant J_t, and then measured the above each Conductivity of the concentration solution at 15 ° C, 18 ° C, 20 ° C, 35 ° C. Inductive voltage divider is used as a proportional arm for the bridge. The total uncertainty of the method was ± (0.03-0.05)% for the 1.0, 0.1 and 0.01D solutions, and ± 0.07% for the 0.001D solution. The article also discusses the factors that affect the measurement.