Table 2.

Mass balance for three heavy metals used in experiment.

Metals		Grass	Mn	Cu	Zn	Total (%)
Inflow (mg)			115.21	98.10	184.95
Uptake (mg)		Rhodes	34.20	26.50	75.77	45
		Vetiver	44.10	32.50	60.23	46
		Elephant	34.40	37.60	45.27	39
Outflow (mg)			2.51	1.50	3.68
Percentage uptake		Rhodes	29.68	27.01	40.97	33
		Vetiver	38.28	33.13	32.57	35
		Elephant	29.86	38.33	24.48	31