title: Removal of BPA model compounds and related substances by means of column chromatography using Octolig®.
abstract: Octolig®, a polyethylenediimine ligand covalently attached to high-surface area silica gel, was used to study the removal of phenolic compounds from aqueous samples by column chromatography. Model phenolic compounds of Bisphenol A (BPA), 4-isopropylphenol and 4-(t-butyl) phenol, were selected for this study due to their similarities in pKa and log P values. The percent removal of these compounds by Octolig® was 26 ± 2 and 22 ± 2, respectively. Furthermore, the three isomers of nitrophenol were investigated as well as additional phenolic compounds, such as amoxicillin and five phenolic dyes. These compounds have a pKa range of 2-10.2. The compounds that have pKa values less than 8.3 were able to be completely removed by Octolig®, yet compounds with pKa values of 8.3 and higher resulted in approximately 20-26% removal.
authors.affiliation: Department of Chemistry, University of South Florida, Tampa, Florida 33620-5250, USA.
authors.forename: Rachael J
authors.initials: RJ
authors.lastname: Alessio
authors.forename: Xiao
authors.initials: X
authors.lastname: Li
authors.forename: Dean F
authors.initials: DF
authors.lastname: Martin
mesh_terms: D001559:Benzhydryl Compounds / Q000737:chemistry; D011232:Chemical Precipitation; D002845:Chromatography / Q000379:methods*; D004785:Environmental Pollutants / Q000737:chemistry*; D004787:Environmental Pollution / Q000517:prevention & control*; D008024:Ligands; D009596:Nitrophenols / Q000737:chemistry; D010636:Phenols / Q000737:chemistry*; D011095:Polyethylenes / Q000737:chemistry*; D058428:Silica Gel / Q000737:chemistry; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D004785:Environmental Pollutants; D008024:Ligands; D009596:Nitrophenols; D010636:Phenols; D011095:Polyethylenes; D058428:Silica Gel; C028690:4-isopropylphenol; C006780:bisphenol A; D000098826:Bisphenol A Compounds; C006862:butylphen