Table 1. Detection capabilities for various authentic samples.
| Compound | Mass | Positive ion mode | Negative ion mode | ||
|---|---|---|---|---|---|
| Acetaminophen | 151.063 | 4.9 fmol | [M+H]+ | 274 fmol | [M−H]− |
| Phenacetin | 179.095 | 1.4 fmol | [M+H]+ | 203 fmol | [M−H]− |
| Caffeine | 194.080 | 0.077 fmol | [M+H]+ | — | |
| Pyrene | 202.078 | 9.5 fmol | [M+H]+ | — | |
| Oleic acid | 282.256 | — | 0.048 fmol | [M−H]− | |
| Stearic acid | 284.272 | — | 10 fmol | [M−H]− | |
| Linolic acid | 280.240 | — | 0.20 fmol | [M−H]− | |
| Arachidic acid | 312.303 | — | 27 fmol | [M−H]− | |
| Arachidonic acid | 304.240 | — | 19 fmol | [M−H]− | |
| Tetracosenoic acid | 368.365 | — | 17 fmol | [M−H]− | |
| α-Tocopherol | 430.381 | 63 fmol | [M+H]+ | 4 fmol | [M−H]− |
| Vitamine K1 | 450.350 | 406 fmol | [M+H]+ | 41 fmol | [M]− |
| γ-Oryzanol | 602.434 | — | 1.6 fmol | [M−H]− | |
| Reserpine | 608.273 | 8.3 fmol | [M+H]+ | 8000 fmol | [M−H]− |
| Ivermectin (B1a) | 874.508 | 2.3 fmol | [M+NH4]+ | — | |