Deg (PAP) % |
Ratio DHP: PAR |
Concentration (μg ML-1) |
1D method (PAR) Recovery % |
1DD method (DPH) Recovery % |
DPH |
PAR |
PAP |
0.00 |
*1:20 |
8 |
10 |
0.00 |
100.00 |
98.75 |
10 |
*1:20 |
8 |
9 |
1 |
101.11 |
98.50 |
20 |
*1:20 |
8 |
8 |
2 |
100.48 |
98.37 |
30 |
*1:20 |
8 |
7 |
3 |
98.42 |
98.62 |
40 |
*1:20 |
8 |
6 |
4 |
98.33 |
98.75 |
50 |
*1:20 |
8 |
5 |
5 |
100.80 |
98.50 |
60 |
*1:20 |
8 |
4 |
6 |
102.50 |
98.87 |
Mean ± SD |
100.48±1.486 |
98.62±0.176 |
* The ratio present in Panadol night® tablets prepared by spiking technique where 8μg/mL of DPH is (7.5 μg/mL + 0.5 μg/mL) [17]. |