Esters 2, 4-D
2011-04-06 4:46 pm
The esters of 2, 4-D are particularly effective against woody plants on pastureland but may be more toxic for birds. For birds, the acidic form of 2, 4-D has an LD50 equal to approximately 500 mg/kg. Assume the esters of 2, 4-D are more toxic for birds. Indicate whether the LD50 of the ester form for birds will be numerically higher or lower than the acidic form. Explain your answer.
回答 (1)
2011-04-09 10:32 am
✔ 最佳答案
of course the LD50 will be lower. LD50, or "50% lethal dose", is the Amount of a substance to cause 50% dying of the tested population. it's a measure of toxicity of a substance to the population, while population's resistance to that substance varies.
if Y is more toxic X, then it should need less (smaller amount of) Y to kill (half of) the population as compared to X. amount = dose.
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