Table 3.

Mean concentrations (mg kg ^-1) of potentially toxic elements in different wastewater irrigated soil.

Soil samples	Cu	Zn	Mn	Cr	Pb	Fe	Ni
Corn soil	20.8 ± 1.11	321.2 ± 35.07	21.8 ± 1.70	10.1 ± 0.34	11.3 ± 1.24	887.4 ± 89.13	20.5 ± 1.30
Range	19.6–21.8	291–360	20.1–23.5	9.82–10.5	10.29–12.7	791–967	19.17–21.7
Rice soil	19.47 ± 1.03	300.40 ± 32.92	20.40 ± 1.55	9.50 ± 0.32	10.57 ± 1.12	829.70 ± 83.30	19.14 ± 1.21
Range	18.36–20.4	272.7–336.8	18.8–21.9	9.18–9.82	9.62–11.8	739.7–904.1	17.92–20.3
Wheat Soil	22.44 ± 1.54	314.13 ± 50.28	23.23 ± 2.93	10.90 ± 0.32	12.52 ± 1.38	792.50 ± 52.91	22.53 ± 1.45
Range	21.3–24.2	260.5–360.5	20.1–25.9	10.64–11.2	11.39–14.0	740.3–846.1	21.22–24.08
Sugarcane soil	19.93 ± 0.08	305.70 ± 53.87	20.63 ± 3.16	10.18 ± 0.40	10.95 ± 0.68	756.83 ± 29.68	20.61 ± 0.33
Range	19.84–19.98	243.5–336.8	18.8–24.28	9.95–10.64	10.16–11.34	739.7–791.1	20.23–20.8
Millet soil	21.62 ± 0.21	293.73 ± 57.56	23.97 ± 3.35	10.79 ± 0.13	11.63 ± 0.42	827.77 ± 31.75	21.58 ± 0.62
Range	21.37–21.74	260.5–360.5	20.1–25.9	10.64–10.87	11.39–12.12	791.1–846.1	21.22–22.29
EU standards 2006	100	300	2,000	100	100		50