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Adsorption of three selected flavonoids with humic fraction‐modified silica gel in hexane: A mechanism study
Author(s) -
Chen Shushi
Publication year - 2020
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201900416
Subject(s) - chemistry , adsorption , fourier transform infrared spectroscopy , hexane , silica gel , fraction (chemistry) , acetonitrile , infrared spectroscopy , chromatography , organic chemistry , chemical engineering , engineering
Three selected flavonoids, commonly found in spices, red‐purple fruits, and vegetables, were adsorbed on humic fraction‐modified silica gel in hexane. The percentage of adsorption in hexane for all examined analytes was nearly 100% after 1 hr, as a result of the strong dipole–dipole interaction. The increasing amount of adsorbent involved in the process improved the percentage of adsorption, which in turn shortened the time needed to reach the maximum by providing more binding sites. However, adsorption was not observed in other liquid phases under the same conditions, such as acetonitrile and ethyl ether. The mechanism leading to the adsorption was explored chromatographically, as well as by fourier transform infrared spectroscopy (FTIR) and theoretical simulations.