Table 2.

UV–Vis spectrophotometric method.

Parameters	1	2	3	4
Linearity	0.98	0.96	0.95	0.97
Accuracy, % RSD < 2%	127.77	116.91	93.06	91.82
Precision, % RSD < 2%
1.99	2.02	1.99	1.79	1.22
1.82	2.15	1.82	1.89	1.74
1.73	2.07	1.73	1.83	0.73
LOD	18.27	33.57	40.34	27.03
LOQ	55.38	101.75	122.24	81.93
% Error	12.00	11.47	19.83	9.17
Linearity range	1.95–250	1.95–250	1.95–250	1.95–250