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一、概述电解液中主要须进行分析者为糖醛及顺丁烯二酸。此外,因所用电解质为硫酸,在分离成品时,亦要求作硫酸的测定。因此本报告对此三项分析作了一些试验。糠醛及顺丁烯二酸均能在滴汞电极上还原,给出极谱波。而电解中可能得到的丁二酸、苹果酸、糠醇、糠酸等均难还原或不在滴汞电极上还原。因此能方便的用极谱法测定电解液中的糖醛及顺丁烯二酸。至于硫酸的测定,由于电解液中情况较简单,基本上没有其他无机离子,因此我们试用了直接滴定的容量法。
First, an overview of the electrolyte mainly to be analyzed for maleic acid and maleic acid. In addition, due to the electrolyte used is sulfuric acid, the separation of finished products, but also for the determination of sulfuric acid. Therefore, this report made some experiments on these three analyzes. Both furfural and maleic acid can be reduced on the drop mercury electrode to give polarographic waves. The electrolysis may be succinic acid, malic acid, furfuryl alcohol, furoic acid, etc. are difficult to restore or not on the mercury drop reduction. Therefore, polarographic determination of aldehyde and maleic acid in the electrolyte can be conveniently performed. As for the determination of sulfuric acid, since the electrolyte is relatively simple, basically no other inorganic ions, so we tried the direct titration volumetric method.