苯并-15-冠-5作为气相色谱固定液的研究

Study on Benzo-15-crown-5 as a Stationary Phase for Gas Chromatography

试用冠醚作为气相色谱固定液文献中曾有报道,但未述及有关极性常数的测定,也未见有与其他固定液进行比较,因而无法确认所试冠醚作为固定液存在的真正必要性。本文首次报道常用冠醚—苯并-15-冠-5作为气相色谱固定液的研究结果。测定了苯并-15-冠-5的极性常数和热重稳定性,并将测定结果与其他固定液进行比较。认为苯并-15-冠-5是一种比双(2-甲氧乙基)己二酸酯更好的固定液。

The chromatographic performance of the column packed with benzo-15-crown-5 has been investigated. The Rohrschneider constants of the stationary phase were determined (X = 2. 44,Y = 4. 13,Z = 3. 33,U = 5. 70,S = 3. 81). Benzo-15-crown-5 showed good thermal stability. The column has been sucessfully used for the separation of hydrocarbons, alcohols, ketones, esters, ethers. aromatics and halides.