p. 1−9
2536-9814
Vol.19/No.4
p. 9−22
2536-9814
Vol.19/No.4
Zn>Cr>Ni>Pb. The average concentrations of these metals were 106.2, 72.1, 56.4, 50.7 and 18.2 mg/kg respectively. Environmental assessment of sediments pollution by heavy metals was carried outusing different indices. Pollution indices are powerful tools for ecological geochemical assessment. The commonly used pollution indices by heavy metals in sediments were classified as two types; single index and integrated index. Four single indices of contamination factor (Cf), ecological risk factor (Er), sediment enrichment factor (SEF) and new index of geo-accumulation (NIgeo) were illustrated. Five integrated indices of pollution load index (PLI), degree of contamination (Cd), modified degree of contamination (mCd), sediment pollution index (SPI) and potential ecological risk index (RI) were also calculated. Based on these indices for identifying the level of heavy metals of Lake Nasser sediments beside applying statistical analysis (cluster variables); the sediment enrichment factor, sedimentpollution index and potential ecological risk index were chosen as the best over the other indices. The results also indicated that Cu, Zn, Cr, Ni and Pb in the surface sediment were primarily derived from crustal origin and the natural processes, such as weathering and erosion of bedrock are the main supply sources of heavy metals insediments along Lake Nasser.]]>
p. 23−34
2536-9814
Vol.19/No.4
p. 35−49
2536-9814
Vol.19/No.4
p. 51−67
2536-9814
Vol.19/No.4
p. 69−75
2536-9814
Vol.19/No.4
p. 77−89
2536-9814
Vol.19/No.4
p. 91−102
2536-9814
Vol.19/No.4
p. 103−114
2536-9814
Vol.19/No.4
p. 115−120
2536-9814
Vol.19/No.4