Table 1.
Results of the target analysis of microcystins obtained by LC–HRMS for aqueous fractions.
| Concentration (µg/L) |
Sample Reference | LOQ (µg/L) |
||||||
|---|---|---|---|---|---|---|---|---|
| Input DWTP | Costa Brava Tank | Dam | A1 Water Supply Catchment |
M1 Superficial Scums |
M2 Reservoir Center |
M3 11-m Depth |
||
| Reservoir | El Pasteral | Susqueda | Sau | |||||
| MC-dmRR | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | 0.3 |
| MC-RR | n.d. | n.d. | n.d. | <0.01 * | <0.01 * | <0.01 * | <0.01 * | |
| MC-dmLR | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | |
| MC-YR | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | |
| MC-LR | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | <0.01 * | |
| MC-WR | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | |
| MC-LA | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | |
| MC-LY | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | |
| MC-LW | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | |
| MC-LF | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | |
n.d.: not detected; MC: microcystin; LOQ: limit of quantitation (direct injection and LC–HRMS analysis); DWTP: Drinking Water Treatment Plant; * the concentration was estimated by extrapolation.