| 摘要 |
Gel for use in liq. chromatography is regenerated by treating a gel, which has become less active in separation performance, with an aq. soln. of a metallic salt or ammonium salt, or a salt of thiocyanic acid, nitric acid or hydroiodic acid, having a concn. of from 30% by wt. to saturation, at 50-120≰C. Pref. the gel is treated with an alkali metal salt or the ammonium salt of thiocyanic acid. Also pref. the gel is treated batchwise under vibration or stirring in a treating bath. Large amt. of contaminated gel can be treated in manner advantageous to industry. |
