There is also a food commissary in the village, which has finished steamed buns for sale, and in order to make a comparison for the laboratory, Li Bai bought two more commercial steamed buns from the commissary.

In addition to the important clue of steamed bread, the investigation team did not forget to investigate other reasons, because in addition to metal poisoning, it may also be tetrodotoxin and paralytic shellfish toxin that caused such symptoms in the patient, so the investigation team also focused on asking the patient's family whether they had eaten seafood products in the morning.

Except for one family who reported that they had eaten hairtail, the other patients had not eaten seafood at home, which could rule out food poisoning caused by toxic animals such as tetrodotoxin and paralytic shellfish toxin.

——

5:20 p.m.

Yunhai Center for Disease Control and Prevention, Experimental Building.

Patient specimens collected from the People's Hospital, as well as external environmental specimens such as steamed bread and water samples collected from the patient's home, were sent to the laboratory for registration and testing.

Because there was a clear suspicion, the specimen was sent directly to the physicochemical group.

The results came out quickly.

Among the 12 samples submitted for testing, the two steamed bun samples of the Jin family were detected to contain barium carbonate complete steamed bread, containing 1.28 grams per kilogram of barium carbonate, 3 grams per kilogram of steamed bread skin, and 0.12 grams per kilogram of peeled steamed bread heart.

Among them, the white powder in the enamel bowl of the Jin family's kitchen has a barium carbonate content of nearly 75%.

Barium carbonate was also detected in the remaining steamed buns in the remaining three patients.

Barium carbonate was not detected in steamed bread samples from the village commissary or in water samples from the external environment.

Li Bai got the test report and fed it back to the hospital first.

In the emergency office, the members of the emergency team held the test report and discussed it.

Yang Le: "Where do ordinary residents get such a high concentration of barium carbonate in their homes?"

Zhang Lin: "Barium carbonate is generally used in electronics, instrumentation, and metallurgical industries. Accessories for the preparation of fireworks, signal flares, ceramic coatings, and optical glass. It is also used as rodenticide, water clarifier and filler. As for why the Jin family has a high concentration of barium carbonate in the kitchen, you still need to ask the people of the Jin family to know. By the way, this time it was Yu Fei and Gao Meng's group who went to the hospital to do the flow survey, didn't they ask the Jin family about the white powder in the porcelain bowl in the kitchen?"

Gao Meng: "At that time, how did we know that there was a problem with the white powder in the porcelain bowl? Of course we didn't ask. ”

Yu Fei: "Jin Dagang, the head of the Jin family, has died, Mrs. Jin is in serious condition, and the only one who is conscious is Jin Dagang's wife, and she can only ask her if you want to inquire about the situation." ”

Lin Xiaoxiao: "I can go to the hospital now, and I should be able to ask the ins and outs of the matter soon." ”

Lin Xiaoxiao, who has just joined the work, is very positive about everything.

Li Bai stopped her, "You don't have to go over in person, you can also use the phone for the second time." ”

Li Bai contacted the preventive health department of the hospital, and directly found the ward where Jin Dagang's wife was through the transfer, and connected the phone.

Jin Dagang's wife reported that the white powder in the kitchen was purchased by her from a veterinary pharmacy, and she wanted to accompany it in food to kill rats, and it was placed on the bottom layer of the kitchen cupboard at that time, but she did not expect her mother-in-law to knead it into the dough as flour, resulting in a poisoning accident.

The ins and outs of the matter have been clarified, and it is another poisoning incident caused by accidental ingestion of poison.

Yang Le: "Recently, there have been a lot of incidents of using toxic and harmful substances as food raw materials to process food, causing accidental food poisoning, do we have to do a phase of propaganda at the CDC? Do you remember that in the first half of the year, two kindergartens in the suburbs gave poisonous drinks to the door of the other kindergarten in order to compete for students, and as a result, a grandmother picked them up and distributed them to her grandson and granddaughter, resulting in poisoning two children. ”

Gao Meng: "I remember this incident, the nature of the incident was very bad, the victim was very tragic, if this grandmother could raise the awareness of danger, maybe the tragedy would not have happened." ”

Zhang Lin: "I think this propaganda is very necessary, to remind people not to pick up food or food additives with unknown routes, for all kinds of toxic and harmful substances, to properly preserve food containers, to have obvious signs. If the Jin family had marked the contents of the enamel bowl this time, this tragedy would not have happened. ”

Yu Fei: "This kind of incident is often impossible to prevent, and our emergency response team has dealt with six similar incidents. ”

Lin Xiaoxiao was surprised, "There are so many?"

Yang Le: "All kinds of strange poisoning incidents make you unthinkable. ”

"How strange is it? Can you tell me about it?" Lin Xiaoxiao was curious about these poisoning incidents, but actually wanted to hear the story.

Although Yang Le is a boy, he usually likes to gossip, and he has this opportunity to show off his past work achievements, and he is happy to talk to Lin Xiaoxiao.

"There are many cases of barium salt poisoning in this metal, barium and its compounds, which are widely used, common barium salts are barium sulfate, barium carbonate, barium chloride, barium sulfide, barium nitrate, barium oxide and so on. In addition to barium sulfate, other barium salts are toxic, such as barium sulfide in depilatory drugs, barium chloride and barium carbonate in insecticides and rodenticides, etc., these are soluble barium salts, very toxic, we have dealt with two cases of food poisoning caused by children accidentally ingesting depilatory drugs and rodenticides.

Another farmer mistook barium chloride for alum, and making bread also caused food poisoning.

Also, a breakfast shop mistakenly put barium carbonate into soy milk as cooked gypsum, causing many people to be poisoned.

The barium sulfate used in X-ray imaging in a private hospital was impure and adulterated with other barium salts, resulting in a poisoning accident caused by the patient after taking it.

There is also the preparation of potassium chloride mixed with barium salt used in the hospital laboratory as a therapeutic drug, which is used for intravenous infusion, resulting in the poisoning and death of patients. ”

Lin Xiaoxiao was dumbfounded when he heard this, sure enough, if he didn't pay attention, all kinds of problems would appear, and safety had to start from the ideology.

Li Bai: "Tomorrow, I will discuss with the health education department to do a popular science on basic health chemistry, Yu Fei is in charge, and others will assist." ”

Yu Fei has a relatively stable personality in the entire emergency team, and he is in charge, and others help to help, and then communicate with the health education department to do a phase of publicity together, which is the best arrangement.

"Okay, no problem, I'll contact the head of the health education section tomorrow. ”

Yu Fei agreed, and then made the posture of the person in charge, and said to the others, "Everyone has any good ideas, the more the better." ”

Lin Xiaoxiao had just joined the work and had never participated in this kind of publicity activity, so he didn't know where to start for a while.

Yang Le yawned, "It's too late today, I'm hungry and sleepy, go back and replenish some energy and recharge, and I'll tell you my thoughts tomorrow." ”

After quickly dealing with the food poisoning thing today, everyone was very tired, but fortunately, the result came out in time, the source of the poisoning was found, the matter was solved, and everyone had not eaten dinner yet.

Lin Xiaoxiao looked out the window, and the sky was dark.

The lights of the whole city are flashing, and the city of Yunhai has a nightlife.