Table 3: Evaluation of accuracy and precision.

Method A
Amount taken ( g mL−1) *Amount found (μg mL−1)RE (%)SD (μg mL−1)RSD (%)

100.00100.400.400.011.39
150.00149.700.660.021.49
200.00200.200.100.020.98

Method B
Amount taken (μg mL−1) **Amount found (μg mL−1)RE (%)SD (μg mL−1)RSD (%)

20.0019.890.550.180.92
40.0040.120.300.210.54
80.0079.620.480.640.81
100.0099.350.650.590.60

*Mean value of four determinations.
**Mean value of three determinations.
RE: relative error; SD: standard deviations; RSD: relative standard deviation.