Table 4.

Comparison of EC₅₀ values for Cu(II), Cd(II), Pb(II), Zn(II), Cr(VI), Co(II), Ni(II), Ag(I) and Fe(III) toxicities obtained from the developed luminescent bacteria biosensor based on alginate microspheres with the EC₅₀ values reported in the literatures.

EC50 Value (μg/L)									Time (min)	Reference
Cu(II)	Cd(II)	Pb(II)	Zn(II)	Cr(VI)	Co(II)	Ni(II)	Ag(I)	Fe(III)
0.17 ×103	0.63 × 104	0.70 × 103	0.60 × 103	1.8 × 104	6.6 × 104	6.6 × 104	6.0 × 104	7.0 × 104	6	This work
0.25 × 103	0.74 × 103	1.40 × 103	-	-	-	-	-	-	1440	[47]
-	1.10 × 104	-	0.86 × 103	-	-	-	-	-	4320	[7]
4.20 × 103	2.90 × 103	4.20 × 103	-	-	-	-	-	-	2880	[47]
4.40 × 104	1.20 × 104	-	0.65 × 102	-	-	-	-	-	15	[48]
-	-	0.95 × 102	0.30 × 103	-	-	-	-	-	2880	[49]
-	-	-	-	1.2 × 104	-	9.3 × 104	7.9	-	15	[50]
-	-	-	-	7.5 × 103	1.6 × 104	2.7 × 102	-	9.2 × 103	15	[6]
-	-	-	-	-	-	-	2.0	-	360	[51]
-	-	-	-	-	1.5 × 102	-	-	-	2880	[52]
-	-	-	-	-	-	0.3 × 102	1.7 × 102	-	2880	[53]
-	-	-	-	-	-	-	-	5.4 × 103	5760	[54]
-	-	-	-	-	5.5 × 103	-	-	-	5760	[55]
-	-	-	-	-	-	-	-	7.5 × 102	2880	[56]