Table 5.

Findings of precision from the assay of three authentic AC samples using AC-PM-MWCNTs and AC-PM-MWCNTs-Al₂O₃ nanocomposite sensors.

Statistical analysis	AC-PM-MWCNTs sensor
	Intra-day assay			Inter-day assay
	Taken*	Found*	% Recovery	Taken*	Found*	% Recovery
	7	6.94	99.14	7	6.95	99.28
	5	4.96	99.20	5	4.92	98.40
	3	2.94	98.00	3	2.92	97.33
Mean ± SD	98.78 ± 0.7			98.34 ± 0.9
n	3			3
%RSD	0.71			0.91
Statistical analysis	AC-PM-MWCNTs-Al2O3 nanocomposite sensor
	Taken*	Found*	% Recovery	Taken*	Found*	% Recovery
	8	7.98	99.75	8	7.96	99.50
	6	5.99	99.83	6	5.98	99.67
	4	3.97	99.25	4	4.00	100.00
Mean ± SD	99.61 ± 0.3			99.72 ± 0.3
n	3			3
%RSD	0.30			0.30