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极谱法分析金属离子时,目前都是以大片银作为参比电极。极谱法分析有机物丁烯醛时,能否用银片作为参比电极。经过试验证明不仅可行,而且灵敏度很高。一、前言丁烯醛又名巴豆醛(Crotonaldehyde),是聚乙烯醇(PVA)生产中最有害的杂质之一,在甲醇和醋酸乙烯(VA)中要求丁烯醛的含量在0.008％以下,否则将严重影响VA的聚合和PVA的质量。目前,检出这
Polarographic analysis of metal ions, the current large silver as a reference electrode. Polarographic analysis of organic crotonaldehyde, silver can be used as a reference electrode. After testing proved not only feasible, but also high sensitivity. I. Introduction Crotonaldehyde, also known as Crotonaldehyde, is one of the most detrimental impurities in the production of polyvinyl alcohol (PVA). The content of crotonaldehyde in methanol and vinyl acetate (VA) is below 0.008% Otherwise it will seriously affect the polymerization of VA and PVA quality. Currently, check out this