Table 4 Experimental data for a real water sample and using developed nanosensor—laboratory analysis.

From: Polyaza functionalized graphene oxide nanomaterial based sensor for Escherichia coli detection in water matrices

Sample number

Optical density

E. coli count using agar plate

E. coli sample 0.5 mL mixed with 0.5 mL of functionalized GO solution

Optical density

Step value obtained from ADC of Arduino microcontroller

Voltage acquired in multimeter (µV)

1

0.46

140

1.93

19

0.0927

2

0.51

182

1.62

25

0.1220

3

0.34

187

1.79

21

0.1025

4

0.47

182

1.89

26

0.1269

5

0.53

130

1.92

21

0.1025

6

0.62

111

1.87

24

0.1171

7

0.53

123

1.89

23

0.1123

8

0.47

194

1.94

24

0.1171

9

0.39

183

1.79

22

0.1074

10

0.51

173

1.46

26

0.1269

Back to article page