Table 2.

Mean concentrations (mg/kg) of heavy metals in some physical samples.

Element	Environmental matrix	N	Mean ± SD	Range (Min–Max)
Pb	Vegetable	5	51.343 ± 42.634	11.010–102.840
	Soil	4	46.039 ± 29.420	5.755–76.065
	Water	6	1.301 ± 2.159	0.040–5.505
Cd	Vegetable	5	0.288 ± 0.069	0.220–0.380
	Soil	4	0.360 ± 0.122	0.250–0.500
	Water	6	0.058 ± 0.102	0.008–0.265
Zn	Vegetable	5	4.593 ± 1.600	3.205–6.910
	Soil	4	3.000 ± 3.802	0.405–8.640
	Water	6	0.228 ± 0.256	0.041–0.575
Cr	Vegetable	5	3.597 ± 1.466	2.010–5.535
	Soil	4	14.655 ± 17.211	4.530–40.250
	Water	6	1.324 ± 2.077	0.141–5.285
Cu	Vegetable	5	10.069 ± 10.450	1.695–23.815
	Soil	4	1.970 ± 1.539	0.530–4.145
	Water	6	0.354 ± 0.483	0.030–1.015
Mg	Vegetable	5	68.463 ± 7.074	55.840–72.095
	Soil	4	41.508 ± 29.73	2.659–70.845
	Water	6	17.836 ± 14.645	0.861–34.920
Ni	Vegetable	5	2.814 ± 0.768	1.720–3.805
	Soil	4	2.174 ± 1.601	0.675–4.375
	Water	6	1.155 ± 1.395	0.105–3.540