Table 3.
Multiple reaction monitoring (MRM) and MS/MS of each toxin from the shellfish analysis.
| Toxins | ESI Mode | Ion | Cone Voltage (V) | Collision Energy (CE) (eV) |
Dwell (s) |
|
|---|---|---|---|---|---|---|
| Precursor (m/z) | Product (m/z) | |||||
| OA | ESI− | 803.5 | 255.1 * | 30 | 50 | 0.05 |
| 113.0 | 60 | |||||
| DTX1 | ESI− | 817.5 | 255.1 * | 30 | 50 | 0.05 |
| 113.0 | 60 | |||||
| DTX2 | ESI− | 803.5 | 255.1 * | 30 | 50 | 0.05 |
| 113.0 | 60 | |||||
| PTX1 | ESI+ | 892.5 | 821.5 * | 30 | 30 | 0.02 |
| 213.3 | 40 | |||||
| PTX2 | ESI+ | 876.6 | 823.5 * | 30 | 20 | 0.20 |
| 213.1 | 40 | |||||
* Transitions used for the phytoplankton analyses. ESI: electrospray ionization.