Table 1 Recovery and precision results of six aflatoxins in peanut, maize and wheat samples (n = 5).
Aflatoxin | Spiked level (μg kg−1) | Peanut | Maize | Wheat | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Recovery Mean ± SD | Intra-day precision (RSD, %) | Inter-day precision (RSD, %) | Recovery Mean ± SD | Intra-day precision (RSD, %) | Inter-day precision (RSD, %) | Recovery Mean ± SD | Intra-day precision (RSD, %) | Inter-day precision (RSD, %) | ||
AFB1 | 1 | 105.0 ± 5.7 | 1.5 | 3.5 | 86.9 ± 1.4 | 5.2 | 3.1 | 87.8 ± 3.2 | 10.2 | 5.5 |
10 | 86.0 ± 0.68 | 5.2 | 2.9 | 79.6 ± 8.0 | 5.1 | 5.0 | 78.4 ± 4.2 | 2.9 | 4.7 | |
50 | 102.17 ± 5.3 | 3.3 | 2.2 | 79.6 ± 1.8 | 2.9 | 4.0 | 104.1 ± 4.9 | 11.3 | 6.7 | |
AFB2 | 1 | 101.5 ± 4.7 | 9.7 | 8.5 | 96.6 ± 1.5 | 8.9 | 7.6 | 81.7 ± 6.9 | 2.9 | 3.4 |
10 | 93.1 ± 3.6 | 4.4 | 8.6 | 85.9 ± 5.9 | 10.4 | 10.1 | 88.4 ± 3.9 | 9.7 | 3.2 | |
50 | 96.7 ± 6.7 | 2.2 | 9.8 | 88.5 ± 6.5 | 5.8 | 6.1 | 96.7 ± 0.9 | 5.4 | 8.5 | |
AFG1 | 1 | 104.0 ± 5.2 | 4.1 | 6.7 | 83.5 ± 3.0 | 2.8 | 6.4 | 95.9 ± 8.2 | 2.2 | 5.0 |
10 | 94.7 ± 5.9 | 10.2 | 7.1 | 86.6 ± 3.5 | 5.1 | 3.7 | 80.9 ± 6.0 | 7.7 | 5.9 | |
50 | 99.8 ± 6.7 | 8.7 | 6.9 | 86.3 ± 6.0 | 2.8 | 3.2 | 89.2 ± 1.6 | 11.8 | 8.9 | |
AFG2 | 1 | 86.2 ± 4.7 | 2.8 | 3.5 | 85.5 ± 0.5 | 5.5 | 4.6 | 98.6 ± 7.7 | 4.0 | 7.1 |
10 | 92.6 ± 4.5 | 3.6 | 5.7 | 80.7 ± 4.4 | 8.7 | 6.9 | 84.6 ± 3.2 | 6.6 | 5.7 | |
50 | 100.2 ± 3.9 | 6.8 | 2.1 | 87.8 ± 3.1 | 9.6 | 5.2 | 90.5 ± 1.6 | 3.9 | 10.2 | |
AFM1 | 1 | 101.0 ± 2.3 | 7.5 | 8.9 | 78.9 ± 2.8 | 3.5 | 3.3 | 103.9 ± 6.5 | 2.8 | 5.7 |
10 | 89.6 ± 1.9 | 7.0 | 3.9 | 80.6 ± 2.5 | 4.8 | 5.4 | 79.9 ± 4.3 | 8.4 | 10.3 | |
50 | 93.0 ± 6.1 | 5.4 | 3.1 | 82.0 ± 2.3 | 2.9 | 5.7 | 91.6 ± 1.1 | 5.3 | 3.7 | |
AFM2 | 1 | 97.5 ± 1.4 | 2.8 | 5.6 | 87.9 ± 5.5 | 11.4 | 9.6 | 88.1 ± 5.5 | 9.1 | 2.1 |
10 | 87. ± 7.5 | 1.9 | 3.7 | 84.3 ± 2.6 | 8.6 | 4.5 | 77.6 ± 6.0 | 8.8 | 3.4 | |
50 | 85.9 ± 7.9 | 2.2 | 4.5 | 78.3 ± 4.1 | 5.6 | 7.2 | 77.7 ± 3.1 | 3.2 | 2.4 | |
