Table 4.
Precursor, quant, and qual ions for the 12 selected MCs, nodularin, and the surrogate standards.
| Compound | Precursor (m/z) | Quant ions (m/z) | Qual ions (m/z) |
|---|---|---|---|
| D-Asp3-MC-RR | 512.861 | 135.071 | 375.054 |
| MC-RR * | 519.850 | 135.070 | 440.130 |
| Nodularin * | 825.383 | 135.111 | 389.111 |
| MC-LA * | 910.365 | 375.054 | 135.050 |
| D-Asp3-MC-LR | 981.430 | 135.111 | 375.111 |
| MC-LF * | 986.365 | 852.286 | 478.214 |
| MC-LR * | 995.378 | 135.039 | 213.050t |
| MC-LY * | 1002.304 | 494.214 | 868.286 |
| MC-HilR | 1009.461 | 135.111 | 213.054 |
| MC-LW | 1025.639 | 517.214 | 891.286 |
| C2D5 MC-LR * | 1028.743 | 135.097 | 163.083 |
| MC-YR * | 1045.639 | 213.032 | 136.222 |
| MC-HtyR | 1059.426 | 135.111 | 617.222 |
| MC-WR | 1068.452 | 135.097 | 626.183 |
* MCs and nodularin used in US EPA method 544 [11].