title: Characterization and phthalate esters sorption of organic matter fractions isolated from soils and sediments.
abstract: The sorption of two phthalate esters (PAEs) and phenanthrene (PHE) by different natural organic matter fractions (NOMs) was examined. The surface area of the NOMs correlated positively with the starting decomposition temperature (SDT), implying increased number of micropores with the rise of condensation. Sorption of PHE on nonhydrolyzable carbons (NHCs) and other NOMs was respectively dependent on aromatic and aliphatic C contents. Likely physical blocking of the aliphatic moieties and input of black carbon materials led to elevated sorption capacity for PHE of aromatic domains in the NHCs. Sorption of PAEs by NOMs excluding NHCs was jointly regulated by hydrophobic partitioning and H-bonding interactions. The SDT of the NOMs correlated negatively with the Koc when SDT ≥304 °C, likely because the highly condensed domains may impair the availability of amorphous moieties for sorption. This study highlights the influence of domain accessibility of NOMs on sorption of hydrophobic organic contaminants.
authors.affiliation: State Key Laboratory of Water Simulation, School of Environment, Beijing Normal University, Beijing 100875, China; Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, USA.
authors.forename: Jie
authors.initials: J
authors.lastname: Jin
authors.affiliation: State Key Laboratory of Water Simulation, School of Environment, Beijing Normal University, Beijing 100875, China. Electronic address: sunke@bnu.edu.cn.
authors.forename: Ke
authors.initials: K
authors.lastname: Sun
authors.affiliation: State Key Laboratory of Water Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
authors.forename: Ziying
authors.initials: Z
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Water Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
authors.forename: Lanfang
authors.initials: L
authors.lastname: Han
authors.affiliation: State Key Laboratory of Water Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
authors.forename: Zezhen
authors.initials: Z
authors.lastname: Pan
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
authors.forename: Fengchang
authors.initials: F
authors.lastname: Wu
authors.affiliation: State Key Laboratory of Water Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
authors.forename: Xitao
authors.initials: X
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Water Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
authors.forename: Ye
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, USA.
authors.forename: Baoshan
authors.initials: B
authors.lastname: Xing
mesh_terms: D000327:Adsorption; D052918:Environmental Restoration and Remediation / Q000295:instrumentation; D004952:Esters / Q000737:chemistry*; D019015:Geologic Sediments / Q000737:chemistry*; D010616:Phenanthrenes / Q000737:chemistry*; D010795:Phthalic Acids / Q000737:chemistry*; D012987:Soil / Q000737:chemistry; D053260:Soot / Q000737:chemistry
chemical_list: D004952:Esters; D010616:Phenanthrenes; D010795:Phthalic Acids; D012987:Soil; D053260:Soot; C031181:phenanthrene; C032279:phthalic acid
keywords: Domain accessibility; Natural organic matter; Phthalate ester; Sorption; Thermal analysis