Table 2.
Calibration of the ELSD response of the four analytes based on the relationship of logarithmic values of both peak areas and analyte concentrations
|
Peak no. |
Compound |
Rt |
Equation |
R
2
|
LOD (μg) |
LOQ (μg) |
Linear range |
Precision (R.S.D.%, n = 5) |
|
|---|---|---|---|---|---|---|---|---|---|
| Intra-day | Inter-day | ||||||||
| 1 |
MEG |
2.18 ± 0.14 |
y = 1.4507x + 2.3077 |
0.9959 |
0.12 |
0.49 |
0.49-6.20 |
4.01 |
3.25 |
| 2 |
Amide |
4.31 ± 0.30 |
y = 1.3716x + 2.3961 |
0.9986 |
0.10 |
0.59 |
0.59-5.90 |
2.54 |
2.24 |
| 3 |
Lauric |
9.15 ± 0.48 |
y = 2.1981x - 1.5648 |
0.9846 |
2.02 |
5.25 |
5.25-26.23 |
3.62 |
2.98 |
| 4 | Amide ester | 17.04 ± 0.35 | y = 1.5903x + 1.4929 | 0.9987 | 0.04 | 0.11 | 0.11-4.52 | 2.07 | 1.95 |