. 2019 Jun 7;5(6):e01854. doi: 10.1016/j.heliyon.2019.e01854

Table 2.

Precision and accuracy for the determination of BAC in bulk form using the proposed spectrophotometric methods.

Method		Nominal value (μg/mL)	Found ± SD^a (μg/mL)	RSD (%)^b	E_r (%)^c
Method I	Within-day	15	14.71 ± 0.23	1.56	–1.93
		25	25.34 ± 0.15	0.59	01.36
		35	35.21 ± 0.32	0.91	00.60
	Between-day	15	14.96 ± 0.30	2.01	–0.27
		25	25.08 ± 0.07	0.28	00.32
		35	34.97 ± 0.60	1.72	–0.09
Method II	Within-day	10	10.05 ± 0.09	0.90	00.50
		15	15.16 ± 0.17	1.12	01.07
		20	20.16 ± 0.33	1.64	00.80
	Between-day	10	10.07 ± 0.15	1.49	00.70
		15	14.96 ± 0.28	1.87	–0.27
		20	20.34 ± 0.38	1.87	01.70
Method III	Within-day	10	09.92 ± 0.03	0.30	–0.80
		15	15.20 ± 0.15	0.99	01.33
		20	19.59 ± 0.16	0.82	–2.05
	Between-day	10	9.97 ± 0.02	0.20	–0.30
		15	14.91 ± 0.17	1.14	–0.60
		20	19.82 ± 0.04	0.20	–0.90

Mean ± standard deviation for three determinations.

% Relative standard deviation.

% Relative error.