Quantitative Characterization of the Toxicities of Cd-Ni and Cd-Cr Binary Mixtures Using Combination Index Method

Table 2

Concentration ratio of Cd-Ni and EC₅₀ value of 10 binary mixture rays.

Binary mixture	rays			EC50
		Cd	Ni
Cd-Ni toxicity to C. pyrenoidosa	R1	0.1034	0.8966
	R2	0.2239	0.7761
	R3	0.3658	0.6342
	R4	0.5357	0.4643
	R5	0.7425	0.2575
Cd-Ni toxicity to S. capricornutum	R1	0.1009	0.8991
	R2	0.2192	0.7808
	R3	0.3595	0.6405
	R4	0.5289	0.4711
	R5	0.7373	0.2627