Horizontal and Vertical Distribution of Heavy Metals in Farm Produce and Livestock around Lead-Contaminated Goldmine in Dareta and Abare, Zamfara State, Northern Nigeria

Table 2

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

Element	Environmental matrix		Mean ± SD	Range (Min–Max)
Pb	Vegetable	5		11.010–102.840
	Soil	4		5.755–76.065
	Water	6		0.040–5.505
Cd	Vegetable	5		0.220–0.380
	Soil	4		0.250–0.500
	Water	6		0.008–0.265
Zn	Vegetable	5		3.205–6.910
	Soil	4		0.405–8.640
	Water	6		0.041–0.575
Cr	Vegetable	5		2.010–5.535
	Soil	4		4.530–40.250
	Water	6		0.141–5.285
Cu	Vegetable	5		1.695–23.815
	Soil	4		0.530–4.145
	Water	6		0.030–1.015
Mg	Vegetable	5		55.840–72.095
	Soil	4		2.659–70.845
	Water	6		0.861–34.920
Ni	Vegetable	5		1.720–3.805
	Soil	4		0.675–4.375
	Water	6		0.105–3.540