论文部分内容阅读
碘阴极溶出法,曾有一些人做过研究。我们的实验结果表明,在0.01N H_2SO_4底液中,碘的溶出峰为较宽的单峰,碘的富集过程是碘在汞电极表面特性吸附作用形成第一分子层。根据实验数据算出第一分子层含汞离子数为1.41×10~(15)个/厘米~2。随着碘离子浓度增加,汞在富集电位下氧化产生Hg_2~(2+),与足够量的Ⅰ生成沉淀的富集过程逐渐变为主要的过程。碘的溶出过程是富集过程的逆过程。
Iodine cathodic dissolution method, there have been some people did research. Our experimental results show that in the 0.01N H_2SO_4 solution, the peak of iodine dissolution is a broad single peak. The iodine enrichment process is the first molecular layer formed by adsorption of iodine on the surface of mercury electrode. According to the experimental data, the number of mercury ions in the first molecular layer is 1.41 × 10 ~ (15) / cm ~ 2. With the increase of iodide ion concentration, Hg 2 2+ is oxidized by mercury at the enrichment potential, and the enrichment process with a sufficient amount of I formation and precipitation gradually becomes the major process. The dissolution of iodine is the reverse of the enrichment process.