Table 3. Precision, accuracy, LOD, and LOQ.
Matrix | HCAs | AA | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||||
Conc. AA (ng/g) | MeIQ | IQ | Glu-P-1 | Glu-P-2 | MeIQx | Norhrman | Harman | Trp-P-2 | PhIP | Trp-P-1 | AaC | MeAaC | |||
| |||||||||||||||
Non-fat liquid | Intra-day precision (%) | 0.67 | 3.7 | 0.9 | 8.8 | 11.2 | 7.2 | 6.0 | 2.8 | 5.9 | 13.3 | 8.3 | 10.8 | - | 2.9 |
3.33 | 4.8 | 2.4 | 8.5 | 5.9 | 4.0 | 2.3 | 1.8 | 10.9 | 10.8 | 9.5 | 10.5 | 9.6 | 2.9 | ||
6.67 | 1.6 | 1.7 | 4.9 | 5.1 | 3.4 | 3.0 | 1.8 | 5.8 | 8.9 | 7.6 | 7.5 | 2.0 | 2.4 | ||
Accuracy (%) | 0.67 | 107.1 | 109.4 | 95.9 | 106.5 | 114.7 | 72.7 | 73.7 | 104.4 | 110.1 | 99.8 | 117.4 | - | 105.3 | |
3.33 | 97.0 | 108.9 | 106.8 | 109.9 | 103.2 | 104.6 | 98.1 | 114.5 | 108.2 | 104.8 | 92.6 | 95.5 | 100.1 | ||
6.67 | 103.6 | 108.9 | 84.9 | 93.7 | 100.9 | 101.9 | 100.9 | 112.1 | 106.7 | 117.8 | 78.3 | 101.4 | 96.2 | ||
LOD LOQ (ng/g) | LOD | 0.09 | 0.023 | 0.19 | 0.26 | 0.18 | 0.088 | 0.045 | 0.15 | 0.34 | 0.19 | 0.28 | - | 2.69 | |
LOQ | 0.27 | 0.072 | 0.56 | 0.79 | 0.56 | 0.27 | 0.14 | 0.45 | 1.033 | 0.58 | 0.85 | 4.68 | 8.89 | ||
Non-fat solid | Intra-day precision (%) | 2 | 4.4 | 3.0 | 3.8 | 3.7 | 2.0 | 4.0 | 4.8 | 5.0 | 3.2 | 3.9 | 4.6 | - | 2.5 |
10 | 3.2 | 3.7 | 4.4 | 4.5 | 2.0 | 2.6 | 4.2 | 10.0 | 4.8 | 2.6 | 4.4 | 4.5 | 2.4 | ||
20 | 1.9 | 2.2 | 2.3 | 4.1 | 2.7 | 4.8 | 4.8 | 4.8 | 2.8 | 1.6 | 4.9 | 2.0 | 2.4 | ||
Accuracy (%) | 2 | 95.9 | 107.7 | 113.5 | 108.5 | 114.9 | 105.3 | 108.1 | 98.2 | 101.2 | 108.3 | 83.3 | - | 103.9 | |
10 | 95.4 | 107.7 | 80.5 | 81.5 | 98.1 | 100.7 | 99.6 | 71.8 | 84.7 | 103.1 | 94.7 | 119.1 | 97.6 | ||
20 | 97.2 | 98.1 | 102.0 | 97.8 | 98.6 | 96.9 | 83.9 | 99.1 | 99.8 | 108.4 | 90.1 | 106.4 | 95.2 | ||
LOD LOQ (ng/g) | LOD | 0.28 | 0.21 | 0.29 | 0.26 | 0.15 | 0.28 | 0.34 | 0.28 | 0.21 | 0.28 | 0.5 | 2.32 | 3.07 | |
LOD | 0.85 | 0.65 | 0.87 | 0.80 | 0.46 | 0.84 | 1.04 | 0.86 | 0.65 | 0.85 | 1.5 | 7.03 | 10.13 | ||
Fat solid | Intra-day precision (%) | 2.5 | 10.3 | 8.2 | 9.6 | 4.0 | 8.4 | 19.9 | 19.7 | 5.9 | 14.2 | 12.4 | 11.5 | - | 2.2 |
12.5 | 7.2 | 10.3 | 6.3 | 5.3 | 14.8 | 5.2 | 11.6 | 3.2 | 2.2 | 4.1 | 12.8 | 13.4 | 2.0 | ||
25 | 6.3 | 6.5 | 6.0 | 4.4 | 6.5 | 8.1 | 5.0 | 7.2 | 9.7 | 13.0 | 9.6 | 5.5 | 2.1 | ||
Accuracy (%) | 2.5 | 94.8 | 107.5 | 89.8 | 90.8 | 115.0 | 103.9 | 94.4 | 93.1 | 108.5 | 105.8 | 113.0 | - | 85.8 | |
12.5 | 98.4 | 102.0 | 85.4 | 90.2 | 100.3 | 116.5 | 95.1 | 102.6 | 109.7 | 99.5 | 99.5 | 106.3 | 100.6 | ||
25 | 97.4 | 93.0 | 77.9 | 75.9 | 90.8 | 85.5 | 97.0 | 89.6 | 98.3 | 97.0 | 84.5 | 75.1 | 102.9 | ||
LOD LOQ (ng/g) | LOQ | 0.64 | 0.68 | 0.57 | 0.23 | 0.64 | 1.36 | 1.23 | 0.39 | 1.01 | 0.87 | 0.86 | 2.59 | 3.00 | |
LOQ | 1.95 | 2.05 | 1.73 | 0.71 | 1.94 | 4.13 | 3.72 | 1.17 | 3.08 | 2.63 | 2.6 | 7.86 | 9.91 |