TY - JOUR
T1 - Persistent organic pollutants and sedimentary organic matter properties
T2 - A case study in the Kishon River, Israel
AU - Oren, Adi
AU - Aizenshtat, Zeev
AU - Chefetz, Benny
PY - 2006/5
Y1 - 2006/5
N2 - 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.
AB - 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.
KW - Lipids
KW - Persistent organic pollutants
KW - Polycyclic aromatic hydrocarbons
KW - Sedimentary organic matter
KW - Sorption
UR - http://www.scopus.com/inward/record.url?scp=33645135086&partnerID=8YFLogxK
U2 - 10.1016/j.envpol.2005.08.039
DO - 10.1016/j.envpol.2005.08.039
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C2 - 16219404
AN - SCOPUS:33645135086
SN - 0269-7491
VL - 141
SP - 265
EP - 274
JO - Environmental Pollution
JF - Environmental Pollution
IS - 2
ER -
