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

Table 8

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

Entry	Copper content in soil^a	Lead content in soil^a	Lead content in the biomass of tuber vegetables^b
			Carrots		Potatoes
			Stems and leaves	Tuber	Stems and leaves	Tuber
47	0	100	0.20 ± 0.02	1.29 ± 0.09	0.28 ± 0.02	1.02 ± 0.09
48	100	100	0.16 ± 0.02	1.01 ± 0.08	0.23 ± 0.02	0.82 ± 0.07
49	200	100	0.12 ± 0.01	0.96 ± 0.08	0.21 ± 0.02	0.79 ± 0.08
50	300	100	0.14 ± 0.01	0.82 ± 0.07	0.22 ± 0.02	0.70 ± 0.08
51	400	100	0.12 ± 0.01	0.79 ± 0.08	0.20 ± 0.02	0.65 ± 0.06
52	500	100	0.11 ± 0.01	0.73 ± 0.06	0.18 ± 0.02	0.63 ± 0.06

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