Effect of Na(I) on Bioavailability for Cr(VI)_ and Cr(III)_ Arthrobacter species

The biosorption of Cr(VI)_ and Cr(III)_ of Arthrobacter species (Arthrobacter globiformis and Arthrobacter oxidas) was studied application dialysis and atomic absorption analysis at various Na(I) concentrations. Is was shown significant difference between the binding constants as for Cr(VI)_ and Cr(III)_Arthrobacter oxidas, as well as Cr(VI)_ and Cr(III)_ Arthrobacter globiformis at various Na(I) concentrations. It was shown, that bioavailability increases in both cases with decreases Na(I) concentration.