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砷是一种类金属原素,在自然界多以化和物的形式存在,在潮湿空气中易被氧化或升华生成三氧化二砷(As_2O_3),俗称砒霜~([1])。因此急性砷中毒常称为砒霜中毒。急性砷中毒多因误服或药用过量中毒。生产加工过程吸入其粉末、烟雾或污染皮肤中毒也常见。As_2O_3经口服5~50 mg即可中毒,60~100 mg即可致死~([2])。砷的氧化物和盐类均属于高毒物质,进入体内可与细胞代谢重要的酶结合,使酶失活,影响细胞代
Arsenic is a metalloid element that exists in nature in the form of compounds. It is easily oxidized or sublimated into arsenic trioxide (As 2 O 3) in humid air, commonly known as arsenic trioxide (1). Therefore, acute arsenic poisoning is often called arsenic poisoning. Acute arsenic poisoning due to overdose or medicinal excess poisoning. Inhalation of powder, smoke or contaminated skin is also common in manufacturing processes. As_2O_3 by oral 5 ~ 50 mg can be poisoned, 60 ~ 100 mg can be lethal ~ ([2]). Arsenic oxides and salts belong to highly toxic substances into the body can be combined with important cellular metabolism of enzymes, the enzyme inactivation, affecting cell generation