Table 2 Determination of CAR and IVA in their laboratory-prepared mixtures by the proposed methods
CAR and IVA in absence of their degradation products (set A) | ||||||||
|---|---|---|---|---|---|---|---|---|
CAR: IVA | Concentration (µg/ml) | Recovery% | ||||||
CAR | IVA | |||||||
CAR | IVA | RD | FDW-SS | CC-SS | RD | FDW-SS | CC-SS | |
1:2.5 | 6 | 15 | 101.67 | 101.84 | 98.65 | 100.20 | 98.10 | 100.92 |
1:3 | 8 | 24 | 101.00 | 101.20 | 98.19 | 100.75 | 98.14 | 101.00 |
1:1 | 10 | 10 | 101.00 | 99.58 | 98.41 | 101.60 | 98.60 | 101.77 |
2.5:1* | 15 | 6 | 100.27 | 98.74 | 98.77 | 98.33 | 98.81 | 101.89 |
3:1 | 24 | 8 | 100.13 | 99.30 | 98.09 | 101.88 | 98.85 | 100.83 |
Mean ± SD | 100.81 ± 0.63 | 100.13 ± 1.32 | 99.42 ± 0.29 | 100.55 ± 1.41 | 98.50 ± 0.36 | 101.28 ± 0.51 | ||
CAR and IVA in presence of their oxidative degradation products (set B) | |||
|---|---|---|---|
% Degradation | CAR: IVA: CAR':IVA' | Recovery% | |
CAR':IVA' | CAR | IVA | |
ITAD-RS | ITAD-RS | ||
10 | 6:15:5.4:13.5 | 99.80 | 98.80 |
30 | 8:24:5.6:16.8 | 98.44 | 101.46 |
50 | 10:10:5:5 | 99.34 | 101.20 |
70 | 15:6:4.5:1.8 | 98.09 | 99.67 |
90 | 24:8:2.4:0.8 | 98.27 | 100.13 |
Mean ± SD | 98.78 ± 0.74 | 100.25 ± 1.00 | |