کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4427984 | 1309177 | 2006 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Persistent organic pollutants and sedimentary organic matter properties: A case study in the Kishon River, Israel Persistent organic pollutants and sedimentary organic matter properties: A case study in the Kishon River, Israel](/preview/png/4427984.png)
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.
Journal: Environmental Pollution - Volume 141, Issue 2, May 2006, Pages 265–274