Table 2.

Concentrations (mg kg-1 unless otherwise indicated) of As, Cd, Fe, Mn, Pb and Zn in Sikor samples.

Element	Mean	SD	Median	Range
As	7.8	2.5	7.4	3.80-13.1
Cd	0.32	0.1	0.34	0.09-0.4
Fe (g kg-1)	35.4	4	33.8	29.5-42.9
Mn	57.2	3.2	32.2	25.8-80
Pb	23.2	0.9	24.7	21-26.2
Zn	69.6	15	67.5	51.4-100

Number of samples (n) = 10. All the data presented were obtained for duplicate samples. SD: standard deviation.