title: Biosorption of nonylphenol by pure algae, field-collected planktons and their fractions.
abstract: Algal samples were fractionated into lipid (LP), lipid free (LF), alkaline nonhydrolyzable carbon (ANHC), and acid nonhydrolyzable carbon (NHC) fractions, and were characterized by the quantitative (13)C multiCP NMR technique. The biosorption isotherms for nonylphenol (NP) were established and compared with previously published data for phenanthrene (Phen). The log KOC values are significantly higher for the field-collected plankton samples than for the commercial algae and cultured algae samples, correlating with their lipid contents and aliphatic carbon structure. As the NHC fraction contains more poly(methylene) carbon, it exhibits a higher biosorption capacity. The sorption capacities are negatively related to the polarity index, COO/N-C=O, polar C and O-alkyl C concentrations, but are positively related to the H/O atomic ratios and poly(methylene) carbon. The higher sorption capacities observed for NP than for Phen on the investigated samples are explained by specific interactions such as hydrogen bonding and π-π interaction.
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
authors.forename: Dainan
authors.initials: D
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. Electronic address: yran@gig.ac.cn.
authors.forename: Yong
authors.initials: Y
authors.lastname: Ran
authors.affiliation: Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA 23529, United States.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Cao
authors.affiliation: Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA 23529, United States.
authors.forename: Jingdong
authors.initials: J
authors.lastname: Mao
authors.affiliation: Department of Chemistry, Iowa State University, Ames, IA 50011, USA.
authors.forename: Jinfang
authors.initials: J
authors.lastname: Cui
authors.affiliation: Department of Chemistry, Iowa State University, Ames, IA 50011, USA.
authors.forename: Klaus
authors.initials: K
authors.lastname: Schmidt-Rohr
mesh_terms: D000327:Adsorption; D002244:Carbon; D009682:Magnetic Resonance Spectroscopy; D058086:Microalgae / Q000378:metabolism*; D010616:Phenanthrenes / Q000378:metabolism; D010636:Phenols / Q000032:analysis / Q000378:metabolism*; D010933:Plankton / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D010616:Phenanthrenes; D010636:Phenols; D014874:Water Pollutants, Chemical; C031181:phenanthrene; D002244:Carbon; C025256:nonylphenol
keywords: Acid nonhydrolyzable carbon (NHC); Algae; Biosorption; Lipid (LP); Nonylphenol (NP)