粗产物经硫酸铜溶液萃取、硅胶过滤、重结晶、真空升华进行分离提纯得到纯产品。
The products obtained were purified by extraction with copper sulfate solution, filtration through silica gel, recrystallization and vacuum sublimation.
主要有溶剂萃取、离子交换、真空熔融、真空蒸馏或升华、电迁移以及区域熔炼等。
There are solvent extraction, ion exchange, vacuum melting, vacuum distillation or sublimation, electro migration and regional melting, etc.
第一种方法是利用氧化还原反应，采用分离、萃取、升华等工序回收废碘液中碘的工艺。
In the first method we make use of oxidation-reduction to adopt iodine reclaiming process of separation, extraction and sublimation from waste iodine liquid.
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