Take the old attack to solve the case

Those who were poisoned were five female students from the nearby vocational college. These two days happened to be the final exam of the vocational college. During the exam in the afternoon, one of the female students suddenly felt short of breath. At first she thought it was because she was too nervous. But soon she started to have a headache and nausea. The invigilator saw that her face was not right and her lips were turning blue, so she immediately asked her to suspend the exam and go to the school infirmary, but she passed out immediately after walking out of the classroom.

At this time, the invigilator didn't realize that she was poisoned, so she hurriedly sent her to the school infirmary with another teacher for diagnosis and treatment.

The school doctor saw the student's bruised lips and shortness of breath, and thought she had some hidden illness. While calling the 120 ambulance, he called the student's parents to inquire.But before the 120 ambulance arrived, four other students were sent here with the same symptoms of nausea, headache, shortness of breath, and bruised lips.

Seeing this situation, the school doctor immediately felt something was wrong, but although she suspected food poisoning at the time and notified the principal, the school leaders suppressed the matter.

It is no wonder that the school leaders of higher vocational colleges will do this, because most of the students eat lunch in the student cafeteria. If food poisoning occurs in the cafeteria of higher vocational colleges, the consequences will be unimaginable. Not only social news will criticize the management of higher vocational colleges, I am afraid that the education supervision department will also make changes to the senior management of the vocational college.

Five students were sent to the hospital for first aid. One died on the way, and the other stopped breathing after being sent to the hospital. Fortunately, the doctor found out the cause of the poisoning in time, and the remaining three were temporarily dead after all-out rescue. Dangerous, but still unconscious.

"Nitrite poisoning."

Zhang Zimu happened to be going to the Municipal Bureau for a meeting, and the deputy captain Zhou Qingcheng immediately led the team to the No. [-] Hospital. Hearing the doctor's explanation, Zhou Qingcheng frowned deeply.

Even people who know nothing about chemistry will feel very familiar when it comes to nitrite. In fact, nitrite is too common.

You can’t eat overnight vegetables because they contain nitrites; you can’t drink thousands of boiling water because they contain nitrites; you can’t eat rotten vegetables because they contain nitrites. Nitrite is known to cause cancer.

However, not many people know that nitrite is actually a kind of food and pharmaceutical additives. A small amount of nitrite will not cause great harm to the human body. It takes more than 0.2~0.5 grams at a time to be poisoned, and even lead to Death, don't look at 0.2~0.5 grams seems to be very small, but it is impossible to have this kind of problem with simple overnight food, not to mention that only these five girls in the entire vocational college were poisoned, so it should not be a problem with the food in the cafeteria.

Although Zhou Qingcheng quickly ruled out the food poisoning in the canteen, he immediately took someone to the canteen of the vocational college for inspection, and at the same time arranged for someone to check the dormitories of the five girls.In order to protect the three surviving girls, and to get clues faster after they woke up, Zhou Qingcheng asked Sun Liang and Zhong Yiyan to stay in the hospital, and also left the forensic doctor to conduct a preliminary autopsy on the deceased.

Zhong Yiyan was dejected and sat outside the door of the ward with Sun Liang. After nitrite poisoning, the blood cannot transport oxygen. Oxygen, looking in through the glass window, the faces of the three girls are covered with oxygen masks.

"What's wrong with you? Are you still thinking about your blind date?" Sun Liang took out his mobile phone and sent a text message to Li Jinrui, telling him that there was another case.

Because Feng Juan has been preparing for the wedding recently, she plans to take advantage of the Chinese New Year to arrange the wedding, so as not to have long nights and dreams, and to prevent Sun Liang from working overtime all the time.

Sun Liang has been working overtime recently, and has no time to inquire about how to deal with the marriage. He even feels a little unreal about it. If it wasn't for Li Jinrui being dragged by Feng Juan to prepare for the marriage recently, he couldn't accompany him to handle the case like before. He couldn't even be sure that he was really getting married.

Zhong Yiyan sighed, and said, "Sun Liang, tell me... do I have no way to go on a blind date in my life? As soon as I want to go on a blind date, such a big case happens, and now I have a psychological shadow."

Five people were poisoned, two died, and three were unconscious. Moreover, the doctor also said that nitrite poisoning is not only likely to cause cancer in the long run, but may also cause irreversible damage to the brain. No wonder Zhong Yiyan psychologically shadowed.

"This kind of thing... can't blame you, even if you didn't receive your mother's call, they have already been poisoned." Sun Liang thought for a while, and could only comfort Zhong Yiyan with these words.

Although the hospital called the police after [-] o'clock, it was after [-] o'clock in the afternoon when they had the attack at school, and nitrite poisoning has a period of incubation period, usually one to three hours unless there are special circumstances. In other words, they should have eaten the food containing nitrite before two o'clock in the afternoon, before Zhong Yiyan's mother called him.

"But, maybe at that time my aunt has already planned to arrange for me to go on a blind date." When Zhong Yiyan said this, there was even a trace of fear on his face.

Sun Liang didn't know what to say to comfort Zhong Yiyan. Now even he himself began to wonder if Zhong Yiyan was cursed. It was true that as soon as there was an intention to go on a blind date, a big case would appear immediately.

At this moment, relatives of the poisoned girl rushed to the hospital one after another.

The five girls who were poisoned this time were all from Binhai City, but all of them were admitted from a county called Wang County below. They were classmates in middle school, and they lived in the same dormitory after they arrived at the vocational college, so they had a good relationship. It's like a sister.

The first girl named Song Jiya was poisoned, and she was also the most seriously poisoned among the five. The 120 ambulance had just left the school and died. The other girl who died on the road was named Li Qing. Their parents were also the first After receiving a call from the school, the first batch rushed to the hospital.

The parents of the other three unconscious girls, Chen Xuanli, Liu Moping, and Fang Juan, also arrived later.

I heard that the parents of the students had arrived, and the school leader who had been hiding for a long time finally appeared. As soon as he appeared, he was immediately besieged by several parents of the students.

When my daughter came home on the weekend, she still said that after the final exam, she would have a holiday and she wanted to spend time with her family at home. She was poisoned and died in a blink of an eye. She could no longer open her eyes and act like a spoiled child. Unable to call myself father and mother... Song Jiya and Li Qing's parents cried loudly while beating several school leaders and ran away with their heads in their hands.

In contrast, the parents of the three unconscious girls were slightly better off, but also very emotional.

Sun Liang and Zhong Yiyan hurried up to separate the crowd, they couldn't let them watch the teachers get beaten up, right? Sun Liang's face was bruised, and Zhong Yiyan's face was not. Knowing who scratched her, her clothes were pulled into a mess.

At this moment, Zhang Zimu, who had just finished a meeting at the city bureau, also rushed over. He looked burly and dignified, and quickly persuaded the victim's family to stop.

Sun Liang and Zhong Yiyan looked at each other with wry smiles. The families of the victims would be very emotional when they were grieving. Sometimes even the police would beat them. They have met many times, but each time only two With the team leader present, the victim's family can quickly calm down. This cruel reality often hits Sun Liang and the others hard.

Zhang Zimu calmed down the family members of the victim, and immediately conducted preliminary interrogations with Sun Liang and Zhong Yiyan separately.

At about eight o'clock in the evening, Chen Xuanli woke up. Because the poisoning was not too serious and her mind was clear, Zhang Zimu questioned her after consulting her family members and Chen Xuanli.

According to what Chen Xuanli said, they returned to the dormitory together after the exam in the morning. Because they didn't want to go to the canteen to eat at noon, Li Qing called and ordered a few dishes. up.

During the exam at [-]:[-] in the afternoon, she and Song Jiya were in the same classroom. Halfway through the exam, Song Jiya felt uncomfortable first. When the teacher asked her to go to the school infirmary, her lips were blue and purple.However, Chen Xuanli knew that Song Jiya had congenital heart disease. At first, she thought she had a heart attack. Later, she was a little scared when she saw that Li Qing, who was in the next class, was also sent out. After that, she felt a stomachache and was out of breath.

"Where did you order takeaway?"

"I don't know either. It was Li Qing who ordered it on a certain treasure. You can ask Li Qing. She doesn't like the food in the canteen and often orders takeaway."

Zhang Zimu was silent for a while, and did not tell Chen Xuanli that Li Qing was dead.

"Since you ordered takeaway, why are you still ordering noodles yourself?"

"Both Li Qing and Fang Juan like to eat noodles, but the ramen restaurant in front of the school was closed down a while ago, so we bought an electric cooker and came back to cook noodles, and the rest of us followed suit."

"Then do you have any bad classmates or enemies at school?"

Chen Xuanli seemed to think about it, and shook her head.

Zhang Zimu stared at her and said, "If there is, it's best to say it."

Chen Xuanli still shook her head and said: "Actually, it's not considered an enemy, but Mo Ping had a boyfriend before, and when they broke up some time ago, it was quite ugly, but it has been two weeks since the incident, and the two of them have never seen each other again. Noisy."

Zhang Zimu nodded and wrote it down.

They were busy until after nine o'clock in the evening, when news came from Zhou Qingcheng that they had found the source of the poison in the victim's dormitory, and someone had put nitrite into the bottle the victim used to hold salt.

This is a case of malicious poisoning.