溶着薄層クロマトグラフィー(第14報)溶着薄層クロマトグラフィー用有機吸着剤の熱安定性

抄録

Thermal stability was examined of 11 kinds of organic adsorbents for sintered thin-layer chromatography, such as ion exchange resins, cellulose ion exchangers, and porous polymers under welding conditions of heating at 100-180° for 10-20 min. Physical, chemical, and mechanical properties of these adsorbents such as changes in color, shape profiles (by scanning electron microscopy), decomposition point (by thermogravimetric differential thermal analysis), ion exchange capacities, packing density, and sedimentation volume were examined under the welding conditions, and no changes in these properties were observed. Among the adsorbents examined, porous polymers such as Amberlite XAD-2 and Merck's microcrystalline cellulose were the most thermostable. Strong and weak acid cation exchangers were more stable than the corresponding anion exchangers. The salt form of these ion exchangers was more stable than corresponding free forms except Amberlite CG-50, CG-400, Machery-Nagel's ECTEOLA cellulose.