Table 1 Analytical parameters of the SPE-HPLC-UV method for the determination of nine PAEs in spiked water.
Analytes | Linear range (ng/mL) | Calibration equations | r2 | LODs (ng/mL) | LOQ (ng/mL) | Intra-day RSDs (%) | Inter-day RSDs (%) |
|---|---|---|---|---|---|---|---|
DMP | 5–100 | y = 773 ± 29x + 21151 | 0.9959 | 0.02 | 0.06 | 5.4 | 6.6 |
DEP | 2–100 | y = 753 ± 18x + 1011 | 0.9976 | 0.03 | 0.09 | 3.9 | 5.8 |
DPrP | 2–200 | y = 436 ± 6x−27 | 0.9989 | 0.05 | 0.16 | 3.7 | 6 |
BBP | 5–200 | y = 244 ± 7x−1188 | 0.9967 | 0.1 | 0.32 | 6.5 | 7.5 |
DIBP | 5–200 | y = 266 ± 7x−48 | 0.9971 | 0.08 | 0.26 | 5.1 | 7.2 |
DBP | 5–200 | y = 182 ± 6x + 231 | 0.9957 | 0.11 | 0.37 | 6.2 | 6.4 |
DNPP | 10–200 | y = 46 ± 2x + 2080 | 0.9948 | 0.24 | 0.8 | 6.6 | 7.1 |
DEHP | 10–200 | y = 49 ± 2x − 24 | 0.9932 | 0.43 | 1.44 | 4.8 | 5.7 |
DNOP | 10–200 | y = 25 ± 1x − 57 | 0.9944 | 0.88 | 2.94 | 8 | 8.2 |
