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本法应用自制TT-Cu铜离子选择电极测定镍电解液中微量铜,提高了中间产品分析的速度和准确度。针对我厂镍电解液组成较为复杂,对主要组分的浓度范围进行了条件试验,试验表明:1.虽镍电解液含大量Na~+和Cl~-(约为105克/升—120克/升),且变化较大,但铜离子选择电极响应电位与铜离子浓度在P_(Cu)2—7范围内呈直线关系,平均斜率为50毫伏,
This method uses homemade TT-Cu copper ion selective electrode to determine trace copper in nickel electrolyte, which improves the speed and accuracy of intermediate product analysis. For our factory nickel electrolyte composition is more complex, the main components of the concentration range of conditions tested, the test showed that: 1. Although the nickel electrolyte containing large amounts of Na ~ + and Cl ~ - (about 105 g / l -120 g / L), and the change is relatively large. However, the response potential of copper ion selective electrode shows a linear relationship with copper ion concentration in the range of P_ (Cu) 2-7 with an average slope of 50 mV,