psychochemist

Chapter 17

Yu Fan's firm tone and eyes seemed to have seen through the truth of everything.

But Chen Xingyang was still taken aback by this operation: "Old Yu, what's going on?"

Yu Fan said calmly: "The red one is not blood at all, but ferric chloride. I put the tea into the bottle, and the tannic acid in the tea reacted with ferric ions to form black tannin." Iron acid. Then I added oxalic acid, which reduced the black color and turned it back to clear water, which proved my inference.”

Chen Xingyang asked again: "That's very strange. Where did so much ferric chloride come from in this river? There is no industrial park or chemical plant nearby. How could there be so much pollution?"

Yu Fan: "Your question is good. The source may not be the place where the water is polluted, but the source is the place where the water is purified!"

Chen Xingyang: "Why am I getting more and more fooled by what you talk about?"

Yu Fan closed his eyes, entered a state of flow, and a nearby map appeared in his mind.The map gradually becomes clearer in the world of my mind, enlarged, and bigger and bigger.

Suddenly, Yu Fan opened his eyes! "It's here, the sewage treatment plant!" Yu Fan said firmly.

Yu Fan got up and walked to the white-haired old man. These old villagers have been watching them, hoping that they can investigate the truth and restore the peace of Beiqiaogou, otherwise they will be in panic all day long.

Yu Fan told the old man: "Old man, don't worry, I have simply tested it just now, the red water is not blood water at all, and there is no superstitious thing like 'blood sacrifice', please rest assured."

A slightly younger old man next to him took a step forward, with a dubious expression, and asked in authentic dialect: "This little expert, what is this?"

Yu Fan didn't answer directly, but instead asked the villagers: "Folks, is there a sewage treatment plant near you?"

Everyone nodded, and an old lady in a pink dress pointed to the distance and said, "That's the direction, go back to the main road and go straight, it's not far."

Yu Fan smiled happily: "That's right! I strongly suspect that this red chemical substance came from a sewage treatment plant!"

Chen Jianyang nodded half-understanding, and said, "You mean that the sewage treatment plant drained the water without treating it cleanly?"

The corners of Yu Fan's mouth turned up, revealing a confident smile, and he changed the topic: "Maybe it was handled too cleanly."

Chen Xingyang was stunned again. He vaguely felt that this should be a question related to chemistry, otherwise Yu Fan would not be so confident, but when he was about to ask, he was interrupted by a voice from a distance.

"I found it! I found it!" It was Chen Xingyang's colleague who rushed over with the bag in his hand.

Chen Xingyang showed an excited expression on his face, but immediately pretended to be calm: "What did you find? Panic."

"We discovered a very strange thing. Some bones were found on the ground in many places in the village." Chen Xingyang's colleague said.

Chen Xingyang was a little disappointed after using it up: "It's not like eating in the countryside like in the city. It's normal to throw the leftover bones outside for the dogs to eat."

The colleague immediately said, "No, these bones have been tampered with. You see, there is a lot of powder stuffed in the middle of these bones, which is very fragrant and very strange."

Yu Fan took the evidence bag, took out the bone and smelled it, and said to himself: "So that's it, now it makes sense."

Chen Xiangyang patted Yu Fan, "Old Yu, what's going on?" The villagers also showed very curious expressions.

Yu Fan said firmly: "These dogs are not bewitched at all, they are poisoned!"

Chen Xingyang was shocked: "You mean poisoning? This problem is serious! And this poisoner is really cruel. If someone is poisoned to death, it will be an extremely bad incident."

Yu Fan: "That's right, it's just that this poison is only harmful to dogs, but it's safe to humans. All of this is man-made. This bone is stuffed with cocoa powder! Theobromine in cocoa powder will act on puppies. The central nervous system and heart muscle of the dog, thus poisoning the dog. Both humans and cats can digest theobromine through metabolism, but the digestive system of dogs does not have this function. Methylxanthines stimulate the central nervous system of dogs, making it A sudden increase in the heart rate, which caused a variety of symptoms of poisoning. After eating cocoa powder, the symptoms were hyperactivity and thirst, which was consistent with the strange phenomenon of the dogs in the village. This thing only needed an extremely low dose to kill the dog , chocolate also contains a lot of theobromine, which is why dogs can't eat chocolate!"

Chen Xingyang said thoughtfully: "This suspect has a lot of tricks. He doesn't use traditional poisons, avoids people's eyes and ears, and can prevent harming human beings from making matters worse. Using this kind of food that can be found everywhere to commit crimes is also extremely convenient. But what is his purpose? To try his best to do this series of pretentious things, to make the village supernatural, and to scare us not to continue the picketing?"

Yu Fan didn't answer, and continued to ask the villagers: "Did you see any strangers coming to the village in the past two days?"

Everyone looked at me, I looked at you, and shook their heads.The elder with the white beard said: "We were in the village during the day, and we didn't see any strangers coming. We are quite sure about this, because our village is small and surrounded by water, and strangers can only come in from the entrance of the village. In addition, there are no strangers in our village, if strangers come, we will definitely find out."

Chen Xingyang answered: "So, this person came here secretly at night to do tricks. And..."

Yu Fan continued to solitaire: "And when he came over at night, he brought those bones with good hands and feet to attract the dogs in the village, so that the dogs in the village would not bark, and the villagers would not find out. Then he could open his mouth in a grand manner. I went to the small yard at the end of the village to set up the scene. And after feeding the dogs, the dogs would get sick and die one after another in the next day or two, so killing two birds with one stone without any extra operations.”

Chen Xingyang: "The little abacus is quite careful. It's really cunning."

Yu Fan's expression was suddenly serious, his brows were furrowed, and he said, "But don't you think it's strange? MLM personnel are not highly educated, how could he think of these methods? Moreover, when we seized their stronghold, the remaining Everyone should have run away, why bother to pretend to be a ghost to do this? Is there something they have to cover up?"

Having said that, Chen Xingyang also felt strange, but changed his mind and said: "Then let's go and ask this ghost in person to find out."

Chen Xingyang and Yu Fan looked at each other and nodded, everyone boarded the car, the destination, Beiqiaogou Sewage Treatment Plant!

The crow on the tree combed its feathers with its beak, and flew away with a gust of wind.

　People always want ghosts and gods to know when they do good things, and they always think that ghosts and gods don’t know when they do bad things. We make things difficult for ghosts and gods——3-Dimethylxanthine (theobromine)

　　
　
(End of this chapter)