Table 1
Statistical description of pH in 1M KCl and heavy metals end As in soils samples in the study area
Statistical parameters Soil pH
(1M KCl)
Total
Pb
Total
Cu
Total
As
Total
Hg
mg.
kg-1
Surface layer
(0-30 cm)
Total No
of soils samples 398 398 398 398 398
Min 3.60 8.70 4.64 0.69 0.00
Max 7.50 215.45 223.82 61.45 4.84
Mean 6.02 40.94 25.25 7.69 0.13
SD 0.93 27.19 19.53 6.85 0.39
VC 0.86 665.67 283.95 39.88 0.10
Median 6.00 32.24 22.12 6.02 0.08
Modus 7.30 27.53 17.73 4.92 0.05
Limits
Usual 150 >200 >100
SD- standard deviation; VC- variation coefficient
*Official Gazette of Republic of Serbia, 23/94