Fong P, Chow A
Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, Canada.
Talanta. 1992 May;39(5):497-503. doi: 10.1016/0039-9140(92)80171-9.
The extraction of several aromatic acids and phenols including salicylic acid, 8-hydroxyquinoline, 1-amino-2-naphthol-4-sulphonic acid and cinnamic acid in the presence of various protonated alkylamines, ammonia and alkali metal cations from aqueous solution by polyurethane foam has been investigated. These compounds are extracted only in the neutral form by a solvent extraction mechanism. The mechanism has been confirmed by the salting-out effect and pH studies. With the exception of 8-hydroxyquinoline, the compounds are more extractable by polyether foam than by polyester foam, suggesting that hydrogen bonding is stronger with the polyether foam.
研究了在各种质子化烷基胺、氨和碱金属阳离子存在下，聚氨酯泡沫从水溶液中萃取几种芳香酸和酚，包括水杨酸、8-羟基喹啉、1-氨基-2-萘酚-4-磺酸和肉桂酸的情况。这些化合物仅通过溶剂萃取机制以中性形式被萃取。盐析效应和pH研究证实了该机制。除8-羟基喹啉外，聚醚泡沫比聚酯泡沫更能萃取这些化合物，这表明聚醚泡沫的氢键更强。
