Study on the Effect of Cu (II) and Zn (II) on the Accumulation of Pb (II) from Soil to the Biomass of Vegetable

Table 10

Effect of zinc on the accumulation of lead from soil to tuber vegetables.

Entry	Zinc content in soil^a	Lead content in soil^a	Concentration of lead in the biomass of tuber vegetables^b
			Carrots		Potatoes
			Stems and leaves	Tuber	Stems and leaves	Tuber
59	0	100	0.20 ± 0.02	1.29 ± 0.09	0.28 ± 0.02	1.02 ± 0.09
60	100	100	0.17 ± 0.01	1.07 ± 0.08	0.25 ± 0.02	0.90 ± 0.01
61	200	100	0.16 ± 0.01	0.96 ± 0.07	0.26 ± 0.03	0.82 ± 0.01
62	300	100	0.18 ± 0.02	0.90 ± 0.08	0.24 ± 0.02	0.79 ± 0.01
63	400	100	0.15 ± 0.01	0.83 ± 0.07	0.22 ± 0.02	0.71 ± 0.01
64	500	100	0.13 ± 0.01	0.78 ± 0.07	0.21 ± 0.01	0.65 ± 0.01

a, mg/kg of dried soil; b, mg/kg of fresh vegetable.