铝合金中常量铜的测定方法颇多。我厂过去一直采用电解法测定,虽然结果准确,但分析时间较长,工人劳动强度大,不适于配合炉前快速分析。我们学习了毛主席关于“人类总得不断地总结经验,有所发现,有所发明,有所创造,有所前进。”的伟大教导,又参阅了一些有关资料,在领导和工人同志的大力支持和帮助下,在较短的时间内,试验成功了铝合金中铜的快速碘量测定法,结果稳定、可靠,较电解法快速(双份样品分析时间只需12分钟)、成本低,基本上满足了生产的需要,在我厂已广泛采用。 (一) 试剂 (1) 硝一磷混酸:1:1硝酸与1:1磷 Determination of the amount of copper in aluminum alloy quite a lot. In the past, our factory used the electrolytic method to determine the result. Although the result was accurate, the analysis time was longer and the labor intensity of the workers was rather big, so it was not suitable for rapid analysis in front of the furnace. We have studied Chairman Mao’s great teaching on “mankind always sums up experiences, finds discoveries, finds inventions, creates them, and advances them.” They also read some relevant information and gave strong support from leaders and workers’ comrades And with the help of the rapid success of the test in a short period of time, the rapid determination of copper in aluminum alloy, the results are stable and reliable, faster than electrolysis (double sample analysis time just 12 minutes), low cost, basic On the production to meet the needs of our plant has been widely used. (A) Reagents (1) Nitric Phosphoric acid: 1: 1 nitric acid and 1: 1 phosphorus