Characterization and phthalate esters sorption of organic matter fractions isolated from soils and sediments

Jie Jin; Ke Sun; Ziying Wang; Lanfang Han; Zezhen Pan; Fengchang Wu; Xitao Liu; Ye Zhao; Baoshan Xing

doi:10.1016/j.envpol.2015.06.031

Characterization and phthalate esters sorption of organic matter fractions isolated from soils and sediments

Environ Pollut. 2015 Nov:206:24-31. doi: 10.1016/j.envpol.2015.06.031. Epub 2015 Jul 2.

Authors

Jie Jin¹, Ke Sun², Ziying Wang³, Lanfang Han³, Zezhen Pan³, Fengchang Wu⁴, Xitao Liu³, Ye Zhao³, Baoshan Xing⁵

Affiliations

¹ 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.
² State Key Laboratory of Water Simulation, School of Environment, Beijing Normal University, Beijing 100875, China. Electronic address: sunke@bnu.edu.cn.
³ State Key Laboratory of Water Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
⁴ State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
⁵ Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, USA.

PMID: 26142747
DOI: 10.1016/j.envpol.2015.06.031

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.

Keywords: Domain accessibility; Natural organic matter; Phthalate ester; Sorption; Thermal analysis.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adsorption
Environmental Restoration and Remediation / instrumentation
Esters / chemistry*
Geologic Sediments / chemistry*
Phenanthrenes / chemistry*
Phthalic Acids / chemistry*
Soil / chemistry
Soot / chemistry

Substances

Esters
Phenanthrenes
Phthalic Acids
Soil
Soot
phenanthrene
phthalic acid