Table 4 - Scavenging of nickel and chromium toxicity in Aulosira fertilissima by immobilization: Effect on nitrogen assimilating enzymes

Table 4. Uptake of nickel and chromium added to the medium as lethal doses after 8 days of growth of free cells and immobilized cells of Aulosira fertilissima.

Condition	Nickel			Chromium
	Initial conc. of Ni in the medium	Final conc. of Ni in the medium after 8 days	Percentage uptake	Initial conc. of Cr in the medium	Final conc. of Cr in the medium after 8 days	Percentage uptake
	(in mg l^-1)		Percentage uptake	(in mg l^–1)		Percentage uptake
Free cells	0.001	0.0003	70%	0.020	0.0015	25%
Immobilized cells	0.001	0.00011	89%	0.020	0.0009	55%