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

Table 1

Field experiments to investigate the effect of copper and zinc on the accumulation of lead from soil of plants.

Pb^2+ (mg/kg)	Cu^2+ (mg/kg)		Pb^2+ (mg/kg)	Zn^2+ (mg/kg)
100	100	Control area	100	100	Control area
100	200		100	200
100	300		100	300
100	400		100	400
100	500		100	500