Table 4. Levels of heavy metals (mg/kg dry weight) in tomato and cabbage samples cultivated around Mojo area farmlands in central Ethiopia.

Metals	Levels of metals (mg/kg dry weight)		Allowable concentrations (mg/kg)
	Tomato	Cabbage
As	1.93±0.50	5.73±0.37	0.1a
Pb	3.63±0.11	7.56±0.23	0.1–0.3ab
Cd	0.56±0.05	1.56±0.05	0.05–0.2ab
Zn	24.50±0.43	23.53±0.11	50c
Cu	16.27±0.40	9.42±0.15	10–40ab
Fe	85.10±0.17	490.46±3.18	-
Mn	27.20±0.34	302.23±3.10	500c
Cr	1.49±0.01	4.63±0.20	1–2.3ac
Hg	3.43±0.05	4.23±0.28	0.01–0.3bd
Ni	1.86±0.05	4.13±0.20	10a
Co	0.63±0.05	1.86±0.05	50c

^a [55]

^b [53]

^c European union standards [54]

^d Dutch target value [73]