Table 4. Error Associated with Pure Samples Versus Mixtures.
| mixture | experimentaly determined (ng)a | error (%) |
|---|---|---|
| rifampicin | 238 | 4.8 |
| rifampicin:cycloheximide (3:1) | 231 | 7.6 |
| rifampicin:cycloheximide (1:1) | 230 | 8.0 |
| rifampicin:cycloheximide (1:3) | 243 | 2.8 |
| cycloheximide | 251 | 0.4 |
| ochratoxin A | 202 | 19.2 |
| ochratoxin A:apigenin (3:1) | 239 | 4.4 |
| ochratoxin A:apigenin (1:1) | 295 | 18.0 |
| ochratoxin A:apigenin (1:3) | 354 | 41.6 |
| apigenin | 383 | 53.2 |
a
For each sample a total of 250 ng was analyzed. The experimental quantification was performed using the “universal” calibration curve.