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lethal concentration 50
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lethal concentration 50
Encyclopedia
理学
半数致死浓度
释
lethal concentration 50 ;LC50
半数致死浓度
能使一群动物在接触外源化学物一定时间后并在一定观察期限内死亡50%所需的浓度。衡量存在于水中的毒物对水生动物和存在于空气中的毒物对哺乳动物乃至人类的毒性大小的重要参数。一般以毫克/米3表示空气中的外源化学物浓度,以毫克/升表示水中的外源化学物浓度。
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