期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2018
卷号：9
期号：7
页码：2142-2152
出版社：University of Mohammed Premier Oujda
摘要：The chemical concentrations of heavy metals can impact adversely on the sedimentsquality of the Rosetta Nile branch. To assess the degree of this adversely impact, 20sediment samples were collected and analyzed for their content of heavy metals.Contamination indices are used to assess the heavy metals; single indices; index ofgeoaccumulation (Igeo), contamination factor (CF), enrichment factor (EF) andecological risk factor (Er), as well as three integrated indices; degree of contamination(DC), pollution load index (PLI) and pollution ecological risk index (PRI). Theelemental ratio and Igeo have indicated that the Rosetta bottom sediments are mainlymoderately polluted by Cu, Co, Ni and Fe, moderately to strongly polluted with Cr andZn and very strong polluted with Pb and Cd. Consequently, the geochemical enrichmentof the studied elements indicated that the investigated area was subjected to chemicalweathering and considered moderately-polluted to very strongly polluted.Accordingely, the studied elements classified into two groups; the first group includesFe, Co, Cr and Ni, which are mainly of natural origin and controlled by the distributionof clay minerals. The second group includes Cu, Zn, Pb, Cd and Zn which originatefrom the industrial activities and irrigation drainage water .The study recommendation is the reduction of the anthropogenic effects throughpreventing irrigation with inadequately treated wastewater and prevents the discharge ofindustrial wastewater into the Nile, which has led to enhancement of the heavy metals inthe freshwater source.
