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[This article belongs to Volume - 57, Issue - 05]

Abstract : In order to assess the levels of pollution in surface sediments at various stations across two sites: Skikda Bay (located in the Mediterranean) and the mouth of the Safsaf River, which flows into this bay, sediment samples were collected during four campaigns (late 2009, early 2010, late 2010, and early 2011). These samples were then processed and analyzed on: Total organic carbon (TOC), extractable organic matter (EOM), total hydrocarbon content (THC), polycyclic aromatic hydrocarbons (PAH), Aliphatic hydrocarbons (AH). Data analysis allowed for the calculation of various statistical parameters, the identification of existing correlations between variables, and finally the determination of mineralogical associations. It appears that the hydrocarbon contents found are slightly higher at the Safsaf River site than at the sea site. The PCA results for the Safsaf river site primarily show an association between THC, HA and PAH. On the Skikda Bay site, two associations have been identified first one between AH and THC and second one between EOM and PAH. The geostatistical study was conducted on the regionalized variables (TOC, EOM, THC, PAH and AH. Omnidirectional variograms were calculated and adjusted for each variable. Kriging of the variables TOC, EOM, THC, AH, PAH was performed and the kriged values were mapped. The kriging maps have enabled a clear visualization of the most heavily polluted areas with hydrocarbons on the two sites studied.