Phytoextraction of Cu, Zn, and Pb Enhanced by Chelators with Vetiver (Vetiveria zizanioides): Hydroponic and Pot Experiments

Table 4

Heavy metal accumulation and translocation in vetiver in hydroponic experiments. unit: mg/kg.

Treatment condition		Metal accumulation		Whole plant accumulation
	Root	Shoot
		Stem	Leaf
Cu	258.16±4.98	21.6±3.58	10.41±2.28	290.17
		(15.96)*
Cu+EDDS	91.72±6.82	20.46±3.54	16.15±5.77	128.33
		(18.31)
Cu+CA	274.35±38.52	20.95±0.88	12.79±2.77	308.09
		(16.88)
Cu+EDTA	46.5±4.76	20.44±3.58	21.24±2.3	88.18
		(20.90)
Zn	124.2±7.53	67.15±4.12	37.63±4.20	228.98
		(52.30)
Zn+EDDS	89.08±18.27	49.79±20.10	40.53±7.60	179.40
		(45.20)
Zn+CA	128.5±15.81	91.18±11.82	44.5±11.84	264.18
		(67.80)
Zn+EDTA	82.1±18.64	67.37±18.82	43.85±14.27	193.32
		(55.60)
Pb	276.98±21.16	93.3±7.78	8.47±3.11	378.75
		(50.32)
Pb+EDDS	279.51±68.34	61.51±29.38	ND	341.02
		(61.51)
Pb+CA	291.23±78.1	18.16±7.54	14.09±1.64	323.48
		(16.13)
Pb+EDTA	75.58±4.55	37.94±5.78	30.82±5.77	144.34
		(34.38)

*() means the metal concentrations in shoot.