Table 2.

The bioluminescent microoptode performance towards Cu(II), Cd(II), Pb(II), Zn(II), Cr(VI), Co(II), Ni(II), Ag(I), and Fe(III) toxicities.

Heavy Metal Ion	Dynamic Range (μg/L)	LOD (μg/L)	Slope(% RLU/μg/L)	EC50 (μg/L)	R2
Cu(II)	(0.1 − 2) × 102	6.40	−0.2512	1.7 × 102	0.999
Cd(II)	(0.2 − 5) × 103	1.56 × 102	−0.0072	6.3 × 103	0.998
Pb(II)	(0.5 − 7) × 102	0.47 × 102	−0.0601	7.0 × 102	0.996
Zn(II)	(0.5 − 7) × 102	0.32 × 103	−0.0700	6.0 × 102	0.996
Cr(VI)	(0.1 − 2) × 104	0.10 × 104	−0.0024	1.8 × 104	0.992
Co(II)	(0.2 − 5) × 104	0.17 × 104	−0.0010	3.2 × 104	0.939
Ni(II)	(0.5 − 7) × 104	0.28 × 104	−0.0006	6.6 × 104	0.988
Ag(I)	(0.2 − 7) × 104	0.18 × 104	−0.0007	6.0 × 104	0.986
Fe(III)	(0.5 − 7) × 104	0.31 × 104	−0.0005	7.0 × 104	0.984