Table 3.

Comparison between heavy metals concentrations obtained in this study with those obtained by other authors in Mediterranean Sea

Location	Cd	Cr	Cu	Co	Mn	Ni	Pb	Zn	Reference
Mediterranean Sea Egypt	0.04–0.47	4.08–297.95	0.46–26.26	0.43–26.39	17–1086	1.65–60.25	3.34–53.67	2.05–62.21	Present study
Malaga bay Mediterranean Sea Spain	0.021–0.283	4.31–26	6.57–21.2	-	-	9.48–40.2	7.92–37.1	-	[47]
Mediterranean Sea Morocco	0.14–0.27	88.40–160.97	4.09–29.12	18.06–31.7	256.56–651.66	3.19–79.89	33.11–47.97	64.82–110.77	[48]
Mediterranean Sea Turkey	-	-	-	-	283–1192	28–240	91.3–751	86–970	[49]
Ivra Complex Italy	-	2568–2984	-	100–117	968–1053	2040–2438	0.25	-	[50]
Mediterranean Sea Libya	5–10.5	14.8–24.9	9.1–22.7	8.2–18.1	14.3–49.4	11.6–29.9	8.9–56.9	11.6–30.5	[51]
Eastern Mediterranean Sea Egypt	1.8–2.3	-	4–9.4	-	200.8–254.3	-	18.4–24.8	33.1–42.2	[52]
Average shale	0.3	90	45	19	850	68	20	95	[39]