Affordable Access

deepdyve-link
Publisher Website

Hydrophilic divinylbenzene for equilibrium sorption of emerging organic contaminants in aquatic matrices

Authors
  • Huysman, Steve
  • Vanryckeghem, Francis
  • De Paepe, Ellen
  • Smedes, Foppe
  • Haughey, Simon A
  • Elliott, Christopher T
  • Demeestere, Kristof
  • Vanhaecke, Lynn
Publication Date
Jan 01, 2019
Identifiers
DOI: 10.1021/acs.est.9b01814
OAI: oai:archive.ugent.be:8635923
Source
Ghent University Institutional Archive
Keywords
Language
English
License
Unknown
External links

Abstract

Hydrophilic divinylbenzene (DVB) (Bakerbond) has surfaced as a promising sorbent for active sampling of analytes from aqueous matrices over a very broad polarity range. Given this, hydrophilic DVB may likewise offer potential for passive sampling, if sorbent/water partitioning coefficients (K-sw) were to be available. In this work, static exposure batch experiments were performed to quantitatively study the equilibrium sorption of 131 environmentally relevant organic contaminants (P values ranging from -1.30 to 9.85) on hydrophilic DVB. The superior affinity of hydrophilic DVB, as compared to Oasis HLB, for compounds with a broad polarity range was confirmed by functional Fourier-transform infrared spectroscopy and Raman characterization, demonstrating the presence of carboxyl moieties. Concentration effects were studied by increasing compound concentrations in mixture experiments and resulted in the steroidal endocrine disrupting compounds in higher K-sw, while lower K-sw were obtained for the (alkyl)phenols, personal care products, pesticides, pharmaceuticals, and phthalates. Nevertheless, K-sw remained constant in the said design for equilibrium water concentrations at environmentally relevant seawater levels. An independent analysis of thermodynamic parameters (change in enthalpy, entropy, and Gibbs free energy) revealed the nature of the main partitioning processes. While polar (log P < 4) compounds were mainly served by physisorption, nonpolar (log P > 4) compounds also exhibited binding by multiple hydrogen bonding. In conclusion, this research facilitates the future application of hydrophilic DVB for active as well as passive sampling in the analysis of organic contaminants for monitoring purposes and for toxicity testing.

Report this publication

Statistics

Seen <100 times