Persistent organic pollutants and sedimentary organic matter properties: A case study in the Kishon River, Israel

Adi Oren, Zeev Aizenshtat, Benny Chefetz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

The Kishon River, the second largest coastal river in Israel, has been severely polluted for several decades. Sediments from upstream and downstream sites of the river were analyzed, lipid-extracted and evaluated for phenanthrene uptake. Total polycyclic aromatic hydrocarbon (PAH) concentration in downstream sediments was 299 μg kg-1, consisting mostly of petrogenic-derived PAHs. Downstream sedimentary lipids were found to be dominated by fresh and decomposed petroleum-derived n-alkanes. The total PAH concentration in upstream sediments was 173 μg kg-1, consisting mostly of pyrogenic-derived PAHs, whereas lipids from these sediments were mostly vegetation-derived. Spectroscopic data suggested an exceptionally high aromatic content in downstream humic acid, which originated from PAHs attached to its structure. Sorption data suggested that upstream sedimentary cuticle-derived lipids function as a sorption domain, while downstream sedimentary lipids, consisting of shorter-chain-length petroleum-derived alkanes, compete with phenanthrene for sorption sites.

Original languageAmerican English
Pages (from-to)265-274
Number of pages10
JournalEnvironmental Pollution
Volume141
Issue number2
DOIs
StatePublished - May 2006

Keywords

  • Lipids
  • Persistent organic pollutants
  • Polycyclic aromatic hydrocarbons
  • Sedimentary organic matter
  • Sorption

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