Table 2. Parameters of the calibration curves determined for individual ergot alkaloids.
| Alkaloid | Curve equation | R2 | LOQ/(µg/kg) (S/N) |
LOD/(µg/kg) (S/N) |
Linear range µg/kg |
|---|---|---|---|---|---|
| Em | Y=564046X | 0.9941 | 3 (396) | 0.5 (121) | 3–313 |
| Es | Y=848492X | 0.9969 | 3 (412) | 0.5 (165) | 3–313 |
| Et | Y=602663X | 0.9982 | 3 (245) | 0.5 (114) | 3–325 |
| Eco | Y=49437.1X | 0.9826 | 3 (614) | 0.5 (164) | 3–313 |
| Ekr | Y=0.06X+1.21971e | 0.9959 | 3 (385) | 0.5 (181) | 3–325 |
| Ecr | Y=863154X | 0.9950 | 3 (242) | 0.5 (97) | 3–313 |
| Emn | Y=0.006X+1.42721e | 0.9988 | 1 (204) | 0.2 (96) | 1–163 |
| Esn | Y=681488X | 0.9972 | 1 (314) | 0.2 (111) | 1–163 |
| Etn | Y=0.06X+1.02305e | 0.9970 | 1 (215) | 0.2 (98) | 1–163 |
| Econ | Y=0.06X+1.8746e | 0.9906 | 1 (224) | 0.2 (131) | 1–163 |
| Ekrn | Y=0.06X+1.9021e | 0.9939 | 1 (174) | 0.2 (118) | 1–163 |
| Ecrn | Y=0.06X+1.6337e | 0.9992 | 1 (262) | 0.2 (144) | 1–163 |
Y=peak area, X=mass fraction (µg/kg), R2=correlation coefficient, LOQ=limit of quantification, S/N=signal to noise ratio, LOD=limit of detection. Abbreviations as in Table 1