Table 3.
Recovery and precision data obtained for the selected pesticides employing both μSPEed and μQuEChERS-dSPE, in combination with UPLC-PDA.
| # | MTa | Recovery ± SDb | Spiking Levelsc | Precisiond |
|
|---|---|---|---|---|---|
| Intra-day | Inter-day | ||||
| pQ | μSPEed | 87.9 ± 11.9 | 5 | 13.9 | 13.7 |
| 50 | 9.8 | 13.3 | |||
| 75 | 10.0 | 12.0 | |||
| μQuEChERS | – | – | – | – | |
| THIA | μSPEed | 97.3 ± 10.2 | 1 | 3.2 | 9.0 |
| 25 | 8.5 | 11.5 | |||
| 50 | 4.6 | 11.2 | |||
| μQuEChERS | 76.5 ± 10.5 | 5 | 6.7 | 6.2 | |
| 25 | 2.6 | 7.8 | |||
| 100 | 4.1 | 5.6 | |||
| ASU | μSPEed | 72.4 ± 9.1 | 1 | 2.2 | 5.7 |
| 25 | 5.4 | 10.2 | |||
| 50 | 5.7 | 12.0 | |||
| μQuEChERS | 91.2 ± 7.5 | 5 | 5.6 | 5.9 | |
| 25 | 2.4 | 6.3 | |||
| 100 | 3.6 | 4.5 | |||
| PIC | μSPEed | 91.3 ± 9.9 | 1 | 4.5 | 13.6 |
| 25 | 4.5 | 14.1 | |||
| 50 | 4.7 | 13.1 | |||
| μQuEChERS | – | – | – | – | |
| AME | μSPEed | 84.7 ± 9.5 | 1 | 4.6 | 13.3 |
| 25 | 4.2 | 13.6 | |||
| 50 | 4.8 | 9.9 | |||
| μQuEChERS | 88.0 ± 6.5 | 5 | 4.5 | 8.4 | |
| 25 | 3.3 | 4.9 | |||
| 100 | 4.1 | 4.5 | |||
| ATR | μSPEed | 85.2 ± 9.0 | 1 | 5.0 | 14.7 |
| 25 | 9.9 | 10.1 | |||
| 50 | 4.1 | 9.3 | |||
| μQuEChERS | 84.0 ± 7.8 | 5 | 5.8 | 6.4 | |
| 25 | 12.0 | 6.7 | |||
| 100 | 4.1 | 4.6 | |||
| LIN | μSPEed | 69.5 ± 7.8 | 1 | 3.9 | 14.0 |
| 25 | 5.2 | 10.5 | |||
| 50 | 4.7 | 14.1 | |||
| μQuEChERS | 73.2 ± 8.4 | 5 | 6.6 | 7.6 | |
| 25 | 2.5 | 6.6 | |||
| 100 | 5.8 | 4.7 | |||
| CYM | μSPEed | 66.1 ± 6.3 | 1 | 4.8 | 14.2 |
| 25 | 7.4 | 12.1 | |||
| 50 | 4.1 | 8.3 | |||
| μQuEChERS | 83.0 ± 12.6 | 5 | 6.2 | 7.4 | |
| 25 | 2.4 | 4.4 | |||
| 100 | 5.8 | 3.8 | |||
a
Microextraction technique.
b
Average of the recovery values at 25 mg L−1of each compound with standard solutions, except for pQ using μSPEed, in which the concentration was 50 mg L−1.
c
Spiking levels in mg L−1.
d
Precision values in relative standard deviation (% RSD).