Table 2.

Dose-dependent and time-dependent GO aqueous suspensions toxicity in bacterial bioluminescence inhibition assay characterized by EC50 value (mg/L content) at varying bacterial cell number in the sample.

E. coli K12 TG1 lac::lux, CFU per 1 mL	Time measurement
	60 min	120 min	180 min
3.70 × 108	1.13 ± 0.05 × 10−4	1.04 ± 0.03 × 10−4	7.92 ± 0.24 × 10−5
1.85 × 108	8.81 ± 0.26 × 10−5	8.20 ± 0.33 × 10−5	5.67 ± 0.17 × 10−5
9.25 × 107	5.57 ± 0.22 × 10−5	5.04 ± 0.23 × 10−5	3.88 ± 0.12 × 10−5
4.62 × 107	2.55 ± 0.10 × 10−5	2.49 ± 0.10 × 10−5	2.28 ± 0.09 × 10−5