摘要
众所周知,砷并非是金属元素,但因砷对环境所产生的影响和危害与重金属有相似之处,故在环境污染的研究与防治中,通常把它当作重金属看待。砷作为人体不需要的元素,毒性非常强,其化合物中的三氧化二砷是妇幼皆知的剧毒药物——砒霜。科学研究表明,只要有0.06克~0.20克砒霜进入人体,人就会中毒身亡。
出处
《中学地理教学参考》
北大核心
2007年第8期15-16,共2页
Teaching Reference of Middle School Geography
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