Toxicity of Fire Retardant Chemicals to Aquatic Organisms: Progress Report
Table 13
Table 13. Summary of the ammonia characteristics of five fire retardant
chemicals used in tests with
Selenastrum capricornutum exposed
in ASTM algal assay medium.
| Chemical | Concentration (mg/L) | IC50 (mg/L) | Total ammonia (mg/L) | Un-Ionized ammonia1 (mg/L) |
| 0-hour | 96-hour | 0-hour | 96-hour |
| Fire-Trol GTS-R | 3.6 | 18 | 0.74 | 0.01 | 0.00 | 0.00 |
| 17 | - | 3.39 | 0.12 | 0.01 | 0.00 |
| 47 | - | 9.57 | 7.83 | 0.03 | 0.02 |
| Fire-Trol LCG-R | 3.6 | 10 | 0.39 | 0.01 | 0.00 | 0.00 |
| 17 | - | 1.79 | 1.31 | 0.00 | 0.00 |
| 47 | - | 5.08 | 4.70 | 0.01 | 0.01 |
| Phos-Chek D-75-F | 10 | 79 | 1.72 | 0.11 | 0.00 | 0.02 |
| 47 | - | 7.96 | 3.95 | 0.01 | 0.00 |
| 130 | - | 21.83 | 20.14 | 0.02 | 0.03 |
| Phos-Chek WD-881 | 2.16 | 24 | 0.04 | 0.02 | 0.00 | 0.00 |
| 10 | - | 0.03 | 0.02 | 0.00 | 0.00 |
| 28 | - | 0.03 | 0.02 | 0.00 | 0.00 |
| Silv-Ex | 3.6 | 15 | 0.06 | 0.01 | 0.00 | 0.00 |
| 17 | - | 0.13 | 0.01 | 0.00 | 0.00 |
| 47 | - | 0.34 | 0.01 | 0.00 | 0.00 |
|
1Un-ionized ammonia = total ammonia adjusted for temperature and pH. |
