Herbicide | DT50a | ADIb | Kowc | Kocd | Kdd | Solubilityemg L-1 | LD50 | LC50(96 h) | LC50(48 h) | LC50(14 day) | BCFh |
---|
| days | mg kg-1bw | logP | mL g-1 | mL g-1 | | (rats)fmg kg-1 | (trout)g mg L-1 | (Daphnia)g mg L-1 | (earthworms)gmg kg-1 | (potential) |
---|
terbuthylazine | 30-60 | 0.004 | 3.2 | 162-278 | 2.2-2.5 | 8.5 | 1590 | 3.8-4.6 | 21-50.9 | 141.7 | 34 (low) |
hexazinone | 30-180 | 0.05 | 1.2 | 54 | 0.2 | 29800 | 860 | >320 | 442 | na | 7 (low) |
- a The rate of degradation of pesticides in soils is often expressed as the half-life (DT50), in years, months or days (Tomlin 2006).
- b The Acceptable Daily Intake (ADI) value is the maximum quantity of chemical that humans can absorb in a day for their entire lifespan without showing any signs of illness (Tomlin 2006). bw = body weight.
- c The octanol-water partition coefficient (Kow) is the ratio of the concentration of a chemical in octanol and in water at equilibrium.
- d The soil organic carbon (OC) affinity coefficient (Koc) represents the soil distribution coefficient (Kd) normalised for soil organic carbon content.
- e Solubility in water.
- f The LD50 is the dose that kills half (50%) of the animals tested (LD = “lethal dose”) (Tomlin, 2006).
- g The Acute LC50 (hours) is the concentration in water that kills half (50%) of the animals tested (LC = “lethal concentration”) (Tomlin 2006).
- h BCF-bio-concentration factor; taken from the Pesticide Properties Database (PPDB), University of Herdfordshire. http://sitem.herts.ac.uk/aeru/footprint [accessed January 2013].
- na: indicates data were not available.