临床资料1994年4月5日，我市共饮食摊主将碳酸钡误当小苏打和面作煎饼，致使46人发生中毒。中毒者除随同的几位教师外均为9-13岁的小学生，计37例，其中男性20入，女性17人。成年人10例。年龄最大者56岁（男性5例，女性5例）。中毒者分别在食后0．5－4小时内先后出现症状，于食 Clinical data April 5, 1994, a total of food stalls in our city of barium carbonate mistakenly as baking soda and noodles for pancake, resulting in 46 people poisoning. In addition to several teachers with poisoning were 9-13 year-old primary school students, 37 cases, of which 20 were male, female 17. 10 adults. The oldest 56 years old (5 males and 5 females). Infected persons have symptoms within 0.5-4 hours after eating, at food