| MEKC Method | Reference Method* | ||||
---|---|---|---|---|---|---|
 | MET | EMP | LIN | MET | EMP | LIN |
MET/EMP/LIN (Mixture I)a Mean % recovery ± SD RSD % Er % t e F e | 100.27 ± 0.16 0.16 0.27 1.71 1.12 | 99.84 ± 0.68 0.68 −0.16 0.53 3.04 | 100.44 ± 0.71 0.71 0.44 2.22 3.91 | 99.96 ± 0.025 0.025 −0.04 | 99.65 ± 0.39 0.39 −0.35 | 99.65 ± 0.36 0.36 −0.35 |
MET/EMP (Mixture II)b Mean % recovery ± SD RSD % Er % t e F e | 100.04 ± 0.59 0.59 0.04 0.80 5.15 | 99.60 ± 0.68 0.68 −0.40 2.10 4.00 |  | 99.81 ± 0.26 0.26 −0.19 | 98.88 ± 0.34 0.34 −1.12 |  |
MET/LIN (Mixture III)c Mean % recovery ± SD RSD % Er % t e F e | 100.52 ± 1.50 1.49 0.52 0.12 5.01 |  | 100.46 ± 1.96 1.95 0.46 0.07 1.85 | 100.17 ± 0.67 0.67 0.17 |  | 100.54 ± 1.44 1.43 0.54 |
EMP/LIN (Mixture IV)d Mean % recovery ± SD RSD % Er % t e F e |  | 99.84 ± 0.80 0.80 −0.16 2.24 1.91 | 101.10 ± 0.75 0.74 1.10 2.15 3.16 |  | 100.83 ± 0.58 0.57 0.83 | 100.28 ± 0.42 0.42 0.28 |