Table 2.
Accuracy and precision of the optimized method for the 11 matrices, each of which was spiked with one of four concentrations of Ochratoxin A.
| Matrix | Spiked level (µg kg−1) |
Intra-day (n = 5) | Inter-day(n = 15) RSD(%) |
|||||
|---|---|---|---|---|---|---|---|---|
| Day 1 | Day 2 | Day 3 | ||||||
| Average recoveries(%) | RSDr(%) | Average recoveries(%) | RSDr(%) | Average recoveries(%) | RSDr(%) | |||
| Grape | 0.1 | 71.7 | 5.4 | 80.1 | 3.4 | 80.0 | 10.3 | 8.2 |
| 1 | 110.2 | 2.5 | 109.4 | 3.4 | 107.5 | 2.5 | 2.8 | |
| 10 | 110.7 | 1.4 | 110.3 | 1.3 | 103.1 | 4.2 | 4.1 | |
| 500 | 114.7 | 1.1 | 102.6 | 2.6 | 100.1 | 0.8 | 6.4 | |
| Wine | 0.1 | 80.0 | 5.8 | 80.6 | 4.2 | 85.8 | 2.4 | 5.0 |
| 1 | 96.5 | 6.0 | 94.7 | 10.0 | 98.7 | 2.6 | 6.5 | |
| 10 | 93.4 | 3.0 | 91.3 | 4.1 | 98.6 | 1.7 | 4.4 | |
| 500 | 111.2 | 0.8 | 109.9 | 1.5 | 96.0 | 8.7 | 8.0 | |
| Juice | 0.1 | 79.7 | 6.6 | 79.2 | 5.2 | 82.5 | 10.8 | 7.2 |
| 1 | 95.7 | 4.3 | 108.5 | 1.3 | 93.1 | 1.8 | 4.3 | |
| 10 | 93.4 | 3.0 | 111.7 | 1.8 | 101.9 | 3.7 | 6.8 | |
| 500 | 110.6 | 2.1 | 94.7 | 10.0 | 109.0 | 1.3 | 2.0 | |
| Raisin | 0.1 | 80.7 | 3.9 | 85.9 | 8.1 | 74.3 | 6.6 | 8.4 |
| 1 | 106.9 | 3.0 | 100.2 | 5.1 | 82.9 | 7.2 | 11.8 | |
| 10 | 87.0 | 7.4 | 99.5 | 4.4 | 94.6 | 4.6 | 7.6 | |
| 500 | 109.0 | 2.0 | 102.6 | 6.4 | 96.5 | 4.2 | 6.6 | |
| Pork | 0.1 | 90.2 | 3.0 | 79.9 | 8.6 | 83.0 | 9.5 | 8.4 |
| 1 | 97.5 | 7.1 | 102.5 | 3.2 | 89.4 | 2.6 | 7.3 | |
| 10 | 74.9 | 2.3 | 80.4 | 10.8 | 94.6 | 3.6 | 12.0 | |
| 500 | 75.1 | 9.8 | 78.4 | 11.6 | 99.3 | 2.3 | 15.2 | |
| Porcine liver | 0.1 | 76.8 | 3.5 | 73.9 | 5.7 | 77.9 | 12.2 | 7.4 |
| 1 | 84.4 | 4.2 | 103.5 | 4.6 | 100.1 | 6.2 | 10.1 | |
| 10 | 84.3 | 9.8 | 104.6 | 6.3 | 100.4 | 3.8 | 11.3 | |
| 500 | 93.3 | 4.7 | 97.7 | 3.3 | 96.0 | 3.4 | 4.1 | |
| Porcine kidney | 0.1 | 84.4 | 9.4 | 87.5 | 17.2 | 87.7 | 10.4 | 11.3 |
| 1 | 77.4 | 6.7 | 74.4 | 3.9 | 93.4 | 6.8 | 12.0 | |
| 10 | 102.9 | 16.4 | 81.8 | 15.3 | 91.3 | 5.7 | 15.8 | |
| 500 | 87.3 | 6.3 | 91.2 | 9.5 | 98.8 | 5.0 | 8.5 | |
| Porcine fat | 0.1 | 79.9 | 8.3 | 71.6 | 4.1 | 77.8 | 10.4 | 8.6 |
| 1 | 73.0 | 1.7 | 90.5 | 15.1 | 71.4 | 5.4 | 15.0 | |
| 10 | 75.7 | 3.6 | 70.7 | 8.4 | 74.2 | 4.1 | 6.0 | |
| 500 | 70.3 | 3.6 | 103.3 | 7.1 | 92.1 | 5.2 | 16.9 | |
| Chicken | 0.1 | 81.1 | 12.5 | 85.6 | 14.6 | 80.5 | 7.7 | 11.2 |
| 1 | 108.8 | 7.8 | 88.2 | 3.7 | 83.9 | 4.4 | 13.1 | |
| 10 | 73.8 | 9.0 | 83.6 | 19.2 | 72.5 | 2.0 | 13.8 | |
| 500 | 73.7 | 8.5 | 75.6 | 8.9 | 78.8 | 8.9 | 8.6 | |
| Eggs | 0.1 | 75.5 | 12.4 | 80.5 | 4.6 | 81.0 | 5.1 | 7.9 |
| 1 | 97.1 | 4.8 | 101.1 | 7.6 | 99.4 | 4.5 | 5.6 | |
| 10 | 83.2 | 11.5 | 93.8 | 11.9 | 95.8 | 16.7 | 14.2 | |
| 500 | 87.0 | 3.0 | 80.4 | 3.5 | 86.9 | 3.3 | 4.8 | |
| Milk | 0.1 | 84.0 | 5.8 | 90.9 | 4.3 | 96.9 | 3.9 | 7.4 |
| 1 | 94.8 | 13.9 | 90.4 | 12.0 | 84.1 | 7.5 | 12.0 | |
| 10 | 86.1 | 6.4 | 100.6 | 2.0 | 104.1 | 12.6 | 9.0 | |
| 500 | 89.9 | 14.8 | 89.9 | 6.6 | 93.8 | 8.0 | 4.2 | |