The proprietress looked at the big white bowl with only a few sesame seeds left at the bottom of the bowl, and there was a crescent-shaped notch on the edge of the bowl, which was the same bowl of sesame seeds used to mix rat poison last night.

The proprietress suddenly broke out in a cold sweat, "That's the sesame seeds I mixed with rat poison, I deliberately put them next to the mouse trap, how did you take them out and use them?" ”

The boss was already crying, "I don't know, you didn't tell me, I ...... I didn't use it on purpose, not me...... I don't want to poison ...... It's none of my business......"

The boss was so frightened that he was already incoherent.

The cause of the incident has been roughly figured out: the snack bar entered the rat, the proprietress bought a rat board and rat poison, mixed the rat poison in half a steamed bun and half a bowl of sesame seeds, the boss did not know, the sesame seeds mixed with rat poison were used to make a mochi ball, and the guests ate the mochi ball, so the rat poison was poisoned.

Nan Hanfei didn't expect to be asked by Gu Yanan like this, but he found important clues, and the police would next investigate the source of the rat poison, as well as the specific process of the whole thing.

Nan Hanfei gestured to the two young policemen beside him, "Take the boss and his wife back to the bureau for further interrogation, and the rest of the people will follow me to the Li Kee Grocery Store on the next street to have a look." ”

The boss and his wife were taken away by the police, and before Nan Hanfei left, he specially thanked Gu Yanan, "I knew that you were my lucky star, and as soon as you came, there was a major breakthrough in the case." ”

"Even if I don't come, you can find out, and now you are going to find the source of the rat poison?"

"Well, the 'three-step down' that the proprietress said just now is acute rat poison, and the state has long banned its use, and now there are still people selling it illegally, and now it is causing a big incident, how to do it if you don't investigate."

"After you find the rat poison, can you give us a sample to test?"

"Of course, we should cooperate more in official matters, but the acute rat poison used by the people is a mixture of multiple poison ingredients, and it is very troublesome to detect."

"Thank you for reminding me, our Psychochemistry Laboratory in Disease Control and Prevention is specialized in this."

Nan Hanfei was just about to speak, but Gu Yanan preemptively said, "I know, after the results come out, I will send you a copy." ”

"We're really smart, waiting for your news."

——

Lianhai Center for Disease Control and Prevention, Laboratory.

The specimens of the poisoned people sent by the hospital, the specimens in the "Tiantian Snack" store, and the rat poison specimens sent by the police from the Li Kee grocery store were found one after another.

A large amount of tetramethylenedisulfonetetramine and trace amounts of fluoroacetamide were detected in the samples of hospitalized poisoned personnel.

Tetramethylenedisulfontetramine and fluoroacetamide were detected in the breakfast balls in the "Everyday Snack" store, the white sesame seeds in the large white bowl on the kitchen panel, the half of the steamed bun and the sesame seeds on the mouse clip.

High concentrations of tetramethylenedisulfonetetramine and fluoroacetamide were detected in the rat poison powder found in the Lee Kee grocery store.

Tetramethylene disulfone tetramine, also known as 424, rat is dead, rat poison is strong, is an acute rodenticide.

Fluoroacetamide is also a type of acute rodenticide.

Gu Yanan looked at the results of the experiment and frowned slightly.

Both of these ingredients are highly toxic and are prohibited by the state for the use of acute rodenticides.

The "three-step" rodenticide sold at Lee Kee Grocery Store is actually a mixture of tetramethylenedisulfonetetramine and fluoroacetamide.

Fluoroacetamide has an antidote – acetamide.

Tetramethylene disulfone tetramine is incurable.

Gu Yanan called Gu Jiashu to inform Gu Jiashu of the test results, and at the same time prayed in his heart, hoping that measures such as vomiting and gastric lavage would be timely, and that the tetramethylene disulfone tetramine in the food would not enter the human body too much, otherwise it could only be treated symptomatically to see the patient's own resistance.

When she was about to get off work that evening, Wang Xiaoxiao returned to the emergency office of the CDC from the hospital and handed over the investigation data of the rat poisoning patient in Xinglong Snack Street to Gu Yanan.

Wang Xiaoxiao made a very detailed investigation of the poisoning abortion, and recorded the situation of the hospitalized patients one by one.

Flipping through one of them, Gu Yanan stopped.

Name: Li Youcai

Gender: Male

Age: 64

Occupation: Private owner, owner of Lee Kee Grocery Store

Address: No. 129, Xinglong West Street, Xicheng District, Lianhai City

Diagnosis: rat poisoning

Gu Yanan saw the "Occupation" column, and thought that when sampling at the "Everyday Snack" shop, Nan Hanfei had mentioned that the place where the proprietress bought rat poison was the Li Ji grocery store on the next street, and this Li Youcai was not the one who illegally sold rat poison.

Gu Yanan pointed to the information of "Li Youcai" and asked Wang Xiaoxiao, "How is this person doing in the hospital now?" ”

"I was already in the morgue when I left the hospital."

"Dead?!"

"Well, dead! He died a hundred times, but he hurt others. ”

As soon as Wang Xiaoxiao's words were heard, there was a story, and Lu Li asked curiously, "What's wrong?" Is there something wrong with this man? ”

Wang Xiaoxiao was worried that no one would say that he was depressed, so he took advantage of Lu Li's questioning and said it all in front of Gu Yanan.

"This afternoon, I was questioning a poisoned patient at the hospital, and the policeman Xiao Li suddenly came to the hospital with several people.

directly found Li Youcai's ward and asked Li Youcai to interrogate.

However, Li Youcai had severe symptoms of poisoning at that time, and he was already confused, and he could not answer any questions at all.

At that time, I was in Li Youcai's hospital room, accompanied by Li Youcai's wife.

The police said that they had just found a large amount of prohibited rat poison in Li Youcai's shop, and they wanted to ask Li Youcai for clarification.

Li Youcai's wife cried beside the hospital bed, saying that Li Youcai bought a few fritters and a few hemp balls from the 'Tiantian Snack' store early in the morning, Li Youcai ate one fritter and two hemp balls, and Li Youcai's wife ate a fritters.

It didn't take long for Li Youcai to have headaches, dizziness, numbness in his limbs, and when he was sent to the hospital, he was foaming at the mouth and having convulsions.

After several hours of rescue by doctors, he still could not be rescued, and finally died of respiratory failure.

Li Youcai's wife cried so much, and the police didn't ask for any clues.

When the policeman Xiao Li left, he was very depressed, saying that he wanted to find out the sales network of the banned rat poison from Li Youcai, but Li Youcai died, and a clue was broken again. ”

Lu Li sighed: "The hawker sells illegal rat poison to the hotel, the restaurant accidentally mixes the rat poison in the breakfast, the vendor eats the breakfast of the restaurant again, and the vendor who sells the prohibited rat poison is poisoned to death by the rat poison he sells, it is really the reincarnation of heaven." ”

"Bitter for other innocent poisoned people."

Wang Xiaoxiao stood at Gu Yanan's desk and complained with palpitations, "I don't dare to eat breakfast sold outside in the future, maybe there will be rat poison accidentally mixed in it." ”

Lu left Xie Wang smiled, "You don't have to be a soldier, aren't the police investigating the source of rat poison now, and when it is found out, we can rest assured." ”

Wang Xiaoxiao looked at Gu Yanan and asked, "Sister Yanan, this rat poisoning incident can be clarified." ”

"After finding out the cause of poisoning, the hospital is responsible for the next treatment, the police are responsible for checking the source of rat poison, and our disease control work is basically over.

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