1990年5月8日下午6时左右,6位顾客前去平罗火车站马某租赁的食堂就餐,主食为炒面、炒米饭,外加炒肚丝、炒鸡蛋、蛋汤等食物,当时该店一职工也食用同类食物少量。食后30分钟至3小时后,就餐者相继发生头痛、头晕、恶心、呕吐、心跳加快,严重者出现四肢皮肤及口唇紫绀等症状,于当晚11时送往当地县医院抢救,对症治疗后症状减轻,3天后痊愈出院。当时下班时该食堂一职工将剩余食物带回家喂自己的6月龄猪,次日晨起发现猪已死亡,死猪皮肤青紫。次日对该食堂调查时,未发现腐败变质食物,即对可疑食物味精水、食盐水、温罐水(水温约40多度)煮豆芽及病人的呕吐物取样,用盐酸萘乙二胺法做亚硝酸盐定性试验,盐水和呕吐物均为强阳性,其余为阴性。进一步对所用食盐存放库房查看,发现袋内仅有几粒灰色固体颗粒,将此颗粒用上法做亚硝酸盐定性试验为强阳性,证明该次食物中毒乃误将亚硝酸盐当作食盐食用而引起。 At around 6 pm on May 8, 1990, six customers went to dining room at the rental restaurant of Pingluo Railway Station. The staple food was fried noodles, fried rice, fried shreds, scrambled eggs, egg soup and other food. At that time, the shop A worker also eat a small amount of similar foods. After eating 30 minutes to 3 hours, the diners had headache, dizziness, nausea, vomiting, rapid heartbeat, extremities and lips cyanosis and other symptoms appear severe, at 11 o’clock that night sent to the local county hospital for treatment, symptoms after symptomatic treatment Reduce, recovered after 3 days and discharged. At that time, the workers at the canteen brought the remaining food back home to feed their own 6-month-old pigs. The pigs were found dead and the dead pigs were bruising on the next morning. The next day the investigation of the canteen, found no spoilage of food, that suspicious food monosodium glutamate water, salt water, warm pot water (water temperature of about 40 degrees) boiled bean sprouts and patient vomit sampling, with naphthalene hydrochloride ethylenediamine method Do nitrite qualitative test, salt water and vomit are strong positive, the rest is negative. Further salt storage of the Treasury to see and found that only a few bags of gray solid particles in the bag, the method of doing qualitative nitrite qualitative test for the strong positive that the food poisoning is mistaken for nitrite salt as food And cause.