Table 6.
Toxicity values and MTU parameters of surfactants mixtures (1:1 w/w) to marine microalgae P. tricornutum (exposure time: 72 h).
| Surfactant A | Surfactant B | EC50, P. tricornutum mgL−1 (95% CI) | TUA | TUB | TUmix | TUr | Type of Action |
|---|---|---|---|---|---|---|---|
| EC-R8E8 | EC-R12–14E10 | 55.3 ± 10.10 | 0.30 | 0.52 | 0.82 | 1.57 | Concentration addition |
| EC-R8E8 | AO-Cocoamido | 69.91 ± 4.45 | 0.38 | 0.61 | 0.98 | 1.62 | Concentration addition |
| AO-R12 | AO-Cocoamido | 65.24 ± 14.70 | 1.10 | 0.57 | 1.66 | 1.52 | Less than additive (antagonism) |
| AO-R14 | AO-Cocoamido | 12.58 ± 4.18 | 1.47 | 0.11 | 1.58 | 1.07 | Response addition |