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我们在二年级学习无机化学与定量分析的基础上,结合嘉兴绢纺厂改性腈纶纤维生产中溶剂的杂质分析,即60％氯化锌水溶液(溶解蚕丝蛋白的溶剂)中微量铁、锰、铜以及阴离子的测定。通过近一个月的分析测定工作,巩固了定量分析的知识,提高了分析问题和解决问题的能力。在改性腈纶生产中,溶剂中微量锰的存在将影响聚合的转化率及反应速率,因此要测定溶剂中锰的含量。现将测定锰的方法总结如下。
Based on the study of inorganic chemistry and quantitative analysis in the second grade, combined with the impurity analysis of the solvent in the production of modified acrylic fiber in Jiaxing Silk Spinning Mill, that is, trace amounts of iron, manganese, zinc and cobalt in 60% zinc chloride aqueous solution (solvent for dissolving silk protein) Determination of copper and anions. Through nearly a month of analytical work, consolidate the knowledge of quantitative analysis, improve the ability to analyze and solve problems. In the modified acrylic production, the presence of trace amounts of manganese in the solvent will affect the conversion and rate of polymerization, so the amount of manganese in the solvent should be determined. Now determine the method of manganese is summarized as follows.