. 2021 Oct 22;29(3):1813–1824. doi: 10.1016/j.sjbs.2021.10.043

Table 3.

Comparisons of mean concentrations (mg Kg⁻¹) ± s.d of selected heavy metals in some vegetable’s consumable parts grown under four different irrigation systems.

		GWI	RWI	Dom.WWI	Dr.WWI	Standards
Plants names	HMs	Means ± SDs	Means ± SDs	Means ± SDs	Means ± SDs
Grain
Phaseolus vulgaris (Green bean)	As	0.51 ± 0.118	0.243 ± 0.108	0.477 ± 0.016	1.67 ± 0.170	0.2^a
	Cd	0.063 ± 0.034	0.086 ± 0.011	0.828 ± 0.059	0.435 ± 0.174	0.05^b
	Pb	0.585 ± 0.097	0.676 ± 0.112	1.845 ± 0.140	4.433 ± 0.515	0.1^b
Leafy
Spinacia oleracea (Spinach)	As	1.017 ± 0.004	0.388 ± 0.155	2.151 ± 0.240	3.50 ± 1.210	0.2^a
	Cd	0.023 ± 0.012	0.058 ± 0.021	0.187 ± 0.139	0.409 ± 0.236	0.05^b
	Pb	0.754 ± 0.071	1.50 ± 0.405	2.121 ± 0.455	3.664 ± 0.988	0.3^b
Brassica compestris (Mustard)	As	0.821 ± 0.126	0.194 ± 0.08	3.038 ± 0.534	3.40.01	0.2^a
	Cd	0.07 ± 0.020	0.143 ± 0.157	0.381 ± 0.206	0.944 ± 0.124	0.05^b
	Pb	0.744 ± 0.169	1.51 ± 0.435	3.389 ± 0.214	7.83 ± 0.623	0.3^b
Roots
Raphanus sativus (Radish)	As	0.073 ± 0.035	0.45 ± 0.380	2.891 ± 0.297	1.501 ± 0.440	0.2^a
	Cd	0.023 ± 0.005	0.086 ± 0.065	0.149 ± 0.173	0.149 ± 0.172	0.05^b
	Pb	0.086 ± 0.006	0.155 ± 0.125	1.065 ± 0.051	2.858 ± 0.382	0.1^b
Daucus carota (Carrot)	As	0.148 ± 0.043	0.59 ± 0.136	0.781 ± 0.067	3.25 ± 0.170	0.2^a
	Cd	0.041 ± 0.022	0.056 ± 0.039	0.246 ± 0.382	0.336 ± 0.165	0.05^b
	Pb	0.003 ± 0.00	0.472 ± 0.049	1.841 ± 0.061	5.543 ± 0.288	0.1^b
Stem tuber
Solanum tubersom (Potato)	As	0.073 ± 0.013	0.385 ± 0.036	2.147 ± 0.056	3.26 ± 1.270	0.2^a
	Cd	0.008 ± 0.000	0.014 ± 0.000	0.28 ± 0.081	0.233 ± 0.089	0.05^b
	Pb	0.332 ± 0.013	0.773 ± 0.089	2.591 ± 0.216	3.998 ± 0.096	0.1^b

(a) Codex Alimentarius Commission. Joint FAO/WHO food standards program, 2014.

(b) (FAO/WHO, 2014).