Table 3.
PSP toxin recovery as determined by the AOAC HPLC method, after addition and elution from Ferrospheres-N and percentage recovery of the microsphere method when compared to the HPLC extraction method.
| Sample | Ronas Voe | Cribba Sound | ||||
|---|---|---|---|---|---|---|
| Toxin | AOAC HPLC method (ng/mL) | Recovered after Ferrospheres-N (ng/mL) | % Recovery | AOAC HPLC method (ng/mL) | Recovered after Ferrospheres-N (ng/mL) | % Recovery |
| STX | 83 | 69.6 ± 4.1 | 83.9 ± 4.9 | 179 | 67.6 ± 3.3 | 39.3 ± 1.9 |
| NEO | ND | ND | ND | 112 | ND | ND |
| GTX 1/4 | 437 | 4.2 ± 2.5 | 1.0 ± 0.6 | 417 | 3.8 ± 0.4 | 0.9 ± 0.1 |
| GTX 2/3 | 302 | 188.1 ± 6.7 | 62.3 ± 2.2 | 268 | 122.8 ± 34.9 | 45.8 ± 13.0 |
| GTX 5 | ND | 1.6 ± 0.6 | ND | 3.3 ± 0.1 | ||
| C1/C2 | ND | 22.2 ± 5.6 | ND | 20.2 ± 1.4 | ||