Take the old attack to solve the case

Nitrite, both in appearance and taste, is very similar to ordinary salt and cannot be distinguished with the naked eye. One can imagine the purpose of the poisoner who put nitrite in the salt jar.

"Captain, it should be easier to check the source of this nitrite, right?" Zhong Yiyan said on the way back to the police force.

Nitrite is what most people call industrial salt. Although nitrite is allowed to be used in food and medicine, the management is relatively strict, especially if the content is too much, it can cause cancer or even kill. Food and Drug Administration should be strictly regulated.

Zhang Zimu glanced at Zhong Yiyan and said nothing, but judging from his expression, he obviously did not agree with Zhong Yiyan's words, even the vice-captains Zhou Qingcheng and Zhan Xinyi next to him also showed expressions of disapproval.

Zhong Yiyan and Sun Liang looked at each other, both of them were at a loss, could it be that this poisonous substance can be easily bought?

"Do you know why nitrite is added to some foods?" Forensic doctor Zhan Xinyi asked.

"It seems that the food can be more beautiful." Zhong Yiyan said.

"It can be said that nitrite is generally used as a color-preserving agent and preservative, mainly in foods such as bacon sausage, braised meat sauce, and canned meat, and only regular manufacturers can use it, such as Places like restaurants and food stalls are not allowed to use them."

Zhan Xinyi first introduced nitrite, then changed her voice and said, "But you know the whole country... no, let's just say Binhai City, do you know how many restaurants in the city use nitrite? I can tell You, more than 90.00% of restaurants, eateries, and food stalls are using nitrite as a condiment!"

"What?!" Zhong Yiyan almost jumped up in fright.

Although Sun Liang's performance was not that exaggerated, his eyes widened suddenly.

"You can go to the market, especially those that sell seasonings, and investigate. The so-called braised pork powder, stewed meat powder, and sauced meat powder are basically compound seasonings made of nitrite, monosodium glutamate, and starch. , those brightly colored and well-presented stewed meat in sauce in the restaurant all use this kind of seasoning." Zhan Xinyi continued.

Zhong Yiyan was stunned for a long time, and then he said to himself: "No wonder I always think that although the braised pork made by Fatty Uncle is delicious, the color and luster is much worse than that of restaurants outside. Put nitrite in it."

Sun Liang glanced at him silently, if the fat uncle heard Zhong Yiyan's words, he would hit him with a big spoon.

……

Although it was past ten o'clock when he returned to the criminal police team, Zhang Zimu still held a case analysis meeting. The purpose of this kind of case analysis meeting held on the same day was to summarize all aspects of the situation so that the next day's meeting could be arranged. Work.

Zhan Xinyi stood up and said: "After a preliminary examination, the two bodies were not injured. Among them, Song Jiya vomited in the school doctor's office, and the vomit has been retrieved. The test results will not be available until tomorrow. Preliminary confirmation, the two deceased should be dead. Respiratory failure caused by nitrite poisoning.

In addition, I found an old cut on Li Qing's arm. I suspect it was caused by suicide. Judging from the traces of the cut, it should be more than half a month old. "

Originally, the corpse was to be transported back for autopsy, but the family members were too excited and afraid of the corpse being dissected, so they refused to let the criminal police take the corpse away when they were in the hospital. In the end, Zhan Xinyi could only do some preliminary inspections. assay.

"Half a month..." Zhang Zimu tapped his fingers on the table and said, "Li Qing broke up with her boyfriend half a month ago, and this cut may be related to the breakup. Chen Han, you can do something to Li Qing's boyfriend tomorrow. investigation."

"Yes, Captain!" Chen Han responded.

Pan Qingyue called up a few photos on the screen and said, "This is the jar we found mixed with nitrite. There are many fingerprints on it and they are messy. We need to identify them one by one."

There are also photos of the entire dormitory on the screen. Although the dormitory is not very tidy, it is very warm. It can be seen that these five girls have put a lot of thought into it.

The poisonous salt is contained in a glass bottle the size of two adult fists, with a blue plastic knob cover. There are many opportunities for five girls in the dormitory to come into contact with such a bottle of salt, even if the girl next door comes to borrow it. , It is difficult to identify the murderer from fingerprints alone.

Zhang Zimu said: "Sun Liang, you are responsible for investigating the source of the poisonous salt."

"Yes, Captain!"

Zhang Zimu thought for a while, and then said: "Cui Xiaoyu, you will partner with Chen Han tomorrow. In addition to checking Li Qing's boyfriend, go and find out the victim's school relationship."

"Yes, Captain!"

"Zhong Yiyan, Li Cancan, you go to investigate the family relationship of the five girls."

"Yes, Captain!"

……

It was almost twelve o'clock when we got home, and Xiao Shuo was already sleeping like a piglet. Although Xiao Mao didn't need to sleep, he still lay motionless beside him with his eyes closed.

Perhaps because he was too tired, Sun Liang couldn't fall asleep for a while, so he just sat down and talked about the case with Li Jinrui.

"Poisonous salt?" Li Jinrui pondered for a while after listening to Sun Liang's words, and said, "It may be inconvenient for you to investigate the source of the poisonous salt."

Sun Liangliang nodded.

Poisonous salt and those so-called "seasonings", whether it is a seller or a user, will definitely choose to conceal it when they are questioned by the police, and because there are so many users, even if he digs three feet alone, he may not be able to find anything. clue.

"If there is a familiar chef of a small restaurant, let him look for clues, and maybe find some clues." Li Jinrui frowned.

But they are not familiar with this line of work, do they want to let a few ghost servants in the family look for it?Although the ghost servants have some abilities, it is indeed too difficult for those hundreds of years of ghost servants to investigate the origin of the poisonous salt.

Feng Juan held a piece of material beside her and didn't know what she was embroidering. The salt she ate at home was picked from a salt tree in a certain circle. It was not only delicious, but also full of vitality. She never went to the market to buy it. It's too salty, so it can't help this case at all.

Sun Liang stared at the bright red material for a while, and suddenly remembered someone, so he hurriedly took out his mobile phone and called Huang Dahong.

Although Huang Dahong is a habitual thief, because of the crackdown last year, several criminal gangs that had been entrenched in Binhai City were wiped out, and his habitual thief has become a local snake in the neighborhood. Some shops even give him some money every month. The money was used as a protection fee so that he could control his subordinates and stop stealing from those shops. If he wanted to find out the origin of these poisonous salts, Huang Dahong could be said to be the best candidate.

And Huang Dahong, who had just received a bonus from the criminal police during the day, was discussing with a few veterans in a karaoke room whether he should treat "providing informants to the police" as a career.

Huang Dahong's veteran subordinates who are used to stealing are naturally also habitual thieves. Each of them is divided into a territory. Because Huang Dahong is strict in management, these people can't steal much money every month. Fortunately, Huang Dahong's "management "Fee" is not much, and I can live on in my small life.

When they suddenly heard that instead of being a thief in the future, they would work as a policeman, everyone was horrified.

Cops and thieves are like cats and mice. Now that the mice suddenly say they want to work for the cat, this...isn't it too unreliable?

"Boss, don't say that we are thieves, can we change our disguise to work for the police, just say that we are catching wanted criminals, are there so many wanted criminals for us to catch? If we don't catch a wanted criminal in a month, we won't be starved." Die? Besides, those wanted criminals are all vicious guys, let's catch them...do we have to fight with our lives?" said the more mature subordinate.

"It's not that we want to catch them, but to provide tips." Huang Dahong waved his hand indifferently, and said, "Just like this time, those bastards won a bonus of [-] yuan in one go. To be honest, money is not money. It's secondary, but the main thing is... We can get money from Tiaozi! It's fair and square! From Tiaozi! Take money!"

What he said to Sun Liang before, such as being looked down upon by others and wanting to change his appearance, are all false, and this is what Huang Dahong said in his heart.

A habitual thief who has been out of the society since he was twelve or thirteen years old and grew up by petty theft, he doesn't care if others think of him, as long as he can live a good life.However, being able to get money from the police gave Huang Dahong a feeling of satisfaction that he had never felt before. No matter how much money he stole, it was impossible to obtain such a sense of satisfaction.

Several subordinates were silent. When Huang Dahong went to receive the bonus, although they couldn't go with him, they could empathize with him.

Yes, take money from Tiao Zi in an open and aboveboard manner!

"Then... are we still doing our current job?" one of his subordinates asked tremblingly.

Huang Dahong rolled his eyes, and was about to speak when his cell phone rang suddenly. He picked it up and saw the words "Officer Sun" written on it.

"Fuck! It's Police Officer Sun, hurry up and turn off the stereo!" Huang Dahong kicked one of his men's legs, and hurriedly connected the phone. "Officer Sun, you haven't rested so late, is there anything you want to tell my younger brother to do?"

"There is indeed one thing I want you to provide clues to." Sun Liang was almost amused. Huang Dahong, who is in his thirties, even called himself his younger brother in front of him.

After listening to Sun Liang's words, Huang Dahong repeatedly said that there is no problem, isn't it just to find a selling point for poisonous salt?With his familiarity with this area, let alone poisonous salt, he knows everything about drug trafficking, but the drug dealers are too cruel, he will never touch them if he can.

Unless the amount is huge, the theft is mostly a public security case, so the relationship between the criminal police and the thief is not too tense. Huang Dahong's men didn't hesitate too much. Find sources of poisonous salt here.

The author has something to say:

It must be explained that this nitrite is allowed by the State Food and Drug Administration, and can be used as a color protectant and preservative. A small amount of use has little harm to the human body.

However, there are regulations prohibiting catering service units from purchasing, storing, and using food additive nitrite.

As for the stewed meat powder and Pao Ding powder sold in the market, do they really contain nitrite, and many of them are three-no products. Many restaurants use these XX powders for the good color of meat dishes. If you eat out , Seeing that the color of those meat dishes is particularly bright, it is best to eat less.