الفهرس 
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Abstract
Contamination factor (Cf) values of vanadium (V) ranged from 0.38 to 2.716 (mg/kg) with a mean concentration of 1.083 (mg/kg) (Table 12). According to categories of contamination factor (Table 6) and the results of the analysis of the values contamination factor (Cf) for vanadium (V) show samples number 23, 11, 2, 1, 28, 26, 27, 18, 15, 21, 10, 12, 7, 3, 5, 24, 33, 29, 36, 32, 14, 49, 8 and 34 are low and all remaining samples are moderate (Figures 19, 20, 21).Contamination factor (Cf) values of lead (Pb) ranged from 0.689 to 90.77 (mg/kg) with a mean concentration of 12.025 (mg/kg) (Table 12). According to categories of contamination factor (Table 6) and the results of the analysis of the values contamination factor (Cf) for lead (Pb) show sample number 23 is low, samples number 1, 11 14, 5, 8, 9 and 2 are moderate, samples number 51, 15, 46, 24, 18, 10, 12, 4, 17, 26, 27, 44, 29, 21, 28 and 32 are considerable and all remaining samples are very high (Figures 18, 20, 22).