Table 5. Evaluation of the accuracy and precision of the proposed method for the determination of morphine (MO) in pharmaceutical samples .

Tablet taken (µmol L -1 )	Standard added (µmol L -1 )	Found (µmol L -1 ) a	Recovery (%)	Standard deviation × 10 -7	RSD b (%)	SE c × 10 -7
0.009	2.00	2.0089	99.99	0.089	0.335	0.040
0.06	2. 00	2.0605	100.92	0.421	1.39	0.188
0.1	2.00	2.1003	100.30	0.742	2.25	0.332
10	2.00	12.031	100.31	0.493	0.515	0.577
100	2.00	101.81	101.81	5.77	3.30	3.33

^a Average of five determinations.

^b Relative Standard deviation.

^c Standard error = Standard deviation/ n^1/2.