Table 4: Average, standard deviation, median, minimum, and maximum of the amounts of major and trace metals, the organic carbon (OC) content, and the pH in the 72 sediments investigated in this study.

Cr Cu Zn Ni As Cd Pb Co Mn K Fe Ca Al OC pH mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg % % % % Average 131 65 706 29 80 18 124 7.9 273 12265 6 2 3 6.2 6.7 Stdv 99 71 959 23 92 37 162 5.2 342 7106 5 1 1 4.1 0.8 Median 95 45 442 27 42 9 69 8.0 172 11070 3 2 3 5.3 6.7 Min 28 1 14 3 4 0.1 4 1.3 23 3248 1 0.2 1 0.5 5.3 Max 529 286 5086 117 516 198 756 24.0 2555 46479 23 5 5 19.5 8.1