每到端午节,为了“驱邪”、“解毒”和健康长寿,长江南北的人至今保持着在门前挂艾蒿、饮雄黄酒的习俗。当地人配制与勾兑雄黄酒的方法极为简单,一般是将雄黄磨成粉末状后倒入白酒或黄酒中饮用。实际上,喝雄黄酒不仅达不到驱邪、解毒的目的,反而会引起中毒。那么,人们为什么还要饮用雄黄酒呢?雄黄,也称鸡冠石,是一种单斜晶系的含砷的有毒矿石,多数为橘红色半透明的结晶体。砷是剧毒物质,毒性极大,人如果误服,5～50毫克即可引起急性砷中毒,达到60 Every Dragon Boat Festival, in order to “exorcism”, “detoxification” and health and longevity, people in the north and south of the Yangtze River still keep the custom of hanging mugwort and drinking realgar at the door. Local preparation and blending realgar wine is extremely simple, usually into a powder into the white wine or yellow wine drinking. In fact, drinking realgar wine not only failed to reach the exorcism, the purpose of detoxification, but will cause poisoning. So, why do people want to drink realgar wine? Realgar, also known as chicken crown stone, is a monoclinic arsenic poisonous ore, most of orange-red translucent crystals. Arsenic is a highly toxic substance, a great toxicity, if people take the wrong clothes, 5 to 50 mg can cause acute arsenic poisoning, reaching 60