Table 9.

Simulated effluent sample analysis using test biosensor

Sample	Different phenol contents	Phenolic compound content (theoretical) (µg/ml)	Phenolic compound content (experimental) (µg/ml)
			Biosensor	HPLC
Simulated effluent 1	Guaiacol 0.022 µg Catechol 0.48 µg Cresol 0.02 µg	0.52	0.51 ± 0.033 (1.9)	0.52 (0)
Simulated effluent 2	2-Aminophenol 0.30 µg 2-Chlorophenol 0.24 µg	0.54	0.50 ± 0.049 (7.4)	0.53 (1.9)
Simulated effluent 3	Catechol 0.22 µg 2-Aminophenol 0.04 µg	0.26	0.27 ± 0.027 (3.8)	0.26 (0)
Simulated effluent 4	Guaiacol 0.022 µg Catechol 0.22 µg 2-Aminophenol 0.073 µg	0.315	0.32 ± 0.038 (1.5)	0.31 (1.5)

Percentage error of instrumental methods in comparison with theoretical values is represented in parenthesis. Results are expressed as ±SD, n = 5