Parameters | SBR | LPV | Reference value |
---|---|---|---|
HPTLC-densitometric method | |||
Retardation factor (Rf) | 0.38 | 0.61 | |
Resolutiona (Rs) | 4.09 a | – | Rs ≥ 2 |
Tailing factor (T) | 0.79 | 0.56 | T ≤ 2 |
Capacity Factor (K′) | 6.25 | 7.62 | 1 < K′ < 10 |
Selectivity (α) | 3.61a | – | α > 1 |
RP HPLC-UV method | |||
Retention time (Rt; min) | 3.03 | 4.07 | |
Resolutiona (Rs) | 3.58 | ـ | Rs ≥ 2 |
Tailing factor (T) | 1.49 | 1.26 | T ≤ 2 |
Asymmetry factor (Af) | 1.04 | 1.00 | 0.9 < Af < 1.1 |
Capacity Factor (K′) | 1.32 | 2.12 | 1 < K′ < 10 |
Selectivity (α) | 1.60a | – | α > 1 |
Injection repeatabilityb | 0.83 | 0.75 | RSD ≤ 1% for n ≥ 6 |
Theoretical plates (N) | 3936 | 2108 | N > 2000 |
Height equivalent to theoretical plate (HETP; cm plate− 1) | 0.0038 | 0.0071 | The smaller the value, the higher the column efficiency |