Forensic Medicine Qu Xiaoshui

Chapter 60 The serial arson case (23)

Xu saw Qu Xiaoshui's distrust, and Nie Xiong smiled wryly: "Even after working at the fire scene for many years, I still have a lot of things I can't handle. Sometimes the fire will change beyond human wisdom. If you can check I would be very grateful for the truth."

Qu Xiaoshui thought of the detailed information he gave to Jiang Yue, and couldn't show any bad attitude.Nie Xiong has already done the best he can.

"I didn't expect a firefighting hero like you to say such humble words. In fact, if your attitude is a little bit worse and you give me some room to find fault, maybe I can feel better." After finishing speaking, the two looked at each other and smiled, The tense atmosphere suddenly relaxed.

Qu Xiaoshui was no longer polite, she squatted down, collected some samples from the fire point and surrounding areas pointed out by Nie Xiong, put them into ziplock bags, labeled them, and took back the backpack.

Nie Xiong glanced curiously, and found that the backpack he thought was not too big was unexpectedly able to hold it. It contained many plastic test tubes, reagents, stickers, and tools.This made him look at Qu Xiaoshui even more highly, at least the other party wasn't just pointing fingers and messing around like his colleagues thought.

With the help of Nie Xiong, Qu Xiaoshui traveled all over the scene of six fires. Not only did the collected samples not fit in his backpack, but he also troubled Nie Xiong to buy a storage box to help bring him back to the criminal police team.

Chen Sheng originally wanted to tell Qu Xiaoshui that the policewoman who had been with Athena Zhu Yin today should change shifts, but he found that there were a lot of things piled up in Qu Xiaoshui's office.

"What is this?" Chen Sheng asked, pointing to the huge storage box.

Jiang Yue replied: "It's the sample that Xiaoshui brought back from the scene of the fire."

"But isn't the fire department responsible for investigating the cause of the fire?" The issue of responsibility and authority still needs attention.

"It should be that there are already six cases, and the fire department has not given any results, so be anxious. She is also trying her best to help." I also know that Qu Xiaoshui must have suffered a rash. A lot of supercilious. "The firefighters said that the fire might have been lit with cigarettes, but they are not sure. Xiao Shui thinks that the method of arson is not that simple, so he has to find out by himself."

Chen Sheng sighed: "The work has piled up like a mountain, wouldn't it be better to leave it to a professional?" But he also understood Qu Xiaoshui's stubbornness, so he didn't say much.

"It's time for Athena Chu to change shifts. Someone will pick her up to stay at your house in the evening. You can arrange it." Due to the lack of police force, it was finally decided to send people to protect Athena Zhu Yin in turn.

"no problem."

The two tacitly did not disturb Qu Xiaoshui's experiment.

Qu Xiaoshui cut the carbides brought back from different fire scenes into small pieces, put them into test tubes, borrowed the equipment from the forensics department, and started the analysis.

It was very late, Jiang Yue bought some bread and went back to the forensics department, he asked concerned: "Can I rest? Is there a result?"

Qu Xiaoshui handed him a copy of the test results: "The sixth fire is indeed as Nie Xiong said, and the combustion accelerant was cooking oil. The results of the others have not yet come out."

"So the result given by the fire department is correct."

Qu Xiaoshui shook his head: "But the plastic bucket containing cooking oil melted on the shelf. If the combustion accelerant is cooking oil, the cause of the fire cannot be cigarettes, but something else."

"You mean, there may be omissions in the investigation results given by the fire department?"

"It's just a possibility. Their daily training volume is already astonishing, and they still need to carry out fire fighting and rescue work in various accidents. The workload is very heavy. It may not be as strong as they described in terms of the after-the-fact investigation of the fire." So hard work, so, I want to try it myself. What I want to do now is to prove the real cause of the fire."

"Just with so many carbides you brought back from the field?"

"Well, relying on these is enough. I'm just waiting for the test results, so I won't go home." She looked at Jiang Yue apologetically as she spoke.

"Don't look at me like that, of course I will accompany you if you don't go back." There is also a policewoman at home to accompany Zhu Yin, and his home has first-class security facilities, which are enough for him to stay in the police force to accompany Qu Xiaoshui .

Jiang Yue thought for a while and asked, "Have you got an idea?"

"It's just a guess," Qu Xiaoshui didn't hide it from him, "Actually, I'm more suspicious of Chen Kai who has an alibi than Rui Meng who doesn't have a clear alibi."

"However, in the next few fires, Chen Kai had a clear alibi, and was even out of town." Jiang Yue reminded her.

"That's what I want to say," Qu Xiaoshui said calmly, "I doubt he can control the timing of the fire."

"It's a bold idea. But it's an open flame, not an electric fire." The open fire is difficult to control.

"What I want to decipher now is this method of controlling the time of fire." As she spoke, she returned to the instrument until the analysis report of the first fire came out.

It was an extremely boring night, Qu Xiaoshui was shuttling in front of various instruments, she was so absorbed that she even forgot that there was Jiang Yue in the office.This made Qu Xiaoshui, who had sorted out the materials in the end, feel guilty.

She walked to the desk, looked at Jiang Yue who was lying on the desk and fell asleep, and gently touched his face: "I'm sorry."

As a girlfriend, she knew that she had done too much. Just working had already consumed too much energy and time of her and him.

But they are all public officials, they are a wall to protect the people, and they have their own rights and obligations to protect.

Looking at the sample analysis report on the mobile phone, she didn't wake up Jiang Yue, and gently put on a piece of clothing for him, and went out lightly.

It was dawn, and since becoming a forensic doctor, she no longer remembered how many times she had greeted the rising sun at the police station.Without thinking too much, she bought the items she needed and went straight to the fire brigade. It is safer to do the open flame experiment on the site of the fire extinguishing experts.

"Excuse me." Qu Xiaoshui was welcomed into the fire brigade by Nie Xiong.

Seeing Qu Xiaoshui's thick dark circles, Nie Xiong smiled proudly and said, "We need to get up for training very early, don't bother."

While walking towards the prepared site, Qu Xiaoshui handed him a piece of material: "I must first thank you for allowing me to borrow the site for the experiment. This is the substance analysis report I extracted from the samples I brought back."

Because there are many technical terms, Qu Xiaoshui patiently explained: "I found sodium carbonate in the collected residues. I analyzed the distribution area of ​​cooking oil between the fire point and the plastic bucket on the shelf, and confirmed the real The fire started on the ground far away from the shelf, and the cause of the fire could not be cigarettes, but sodium carbonate."

"Sodium carbonate is a substance used in aircraft accidents to determine whether it was an accident or a bomb was installed. For example, when glycerin explosives or nitroglycerin explode, the high temperature of the explosion will cause sodium atoms to be separated and combined with carbon dioxide. become sodium carbonate."

"Are you saying that these six fires were caused by nitro compounds?" Nie Xiong couldn't believe it. "This is really a bold speculation!"

"Yes, and I think the way to buy nitroglycerin must be accessible in daily life. I have brought the things here." She patted the box she brought.

When he arrived at the venue, Nie Xiong looked at Qu Xiaoshui speechlessly as he took out enemas in various packaging in various colors from the box: "Is this medicine?"

"Well, I bought it from a pharmacy that is open 24 hours a day. I bought everything. Acids and glycerin are needed to make nitroglycerin, and you need to buy it at any time without attracting attention. The best I can think of is starting with high purity. This is the medicine." Qu Xiaoshui squatted down and opened the package.

"50 percent of enemas are glycerin, but acid is not something you can buy casually. The only good ones I can think of are fertilizers."

Qu Xiaoshui took it out while talking: "Use this method to produce nitroglycerin and burn it. As long as you control the timing of the chemical reaction, the time will become controllable."

"You majored in chemistry?" Nie Xiong couldn't help asking seeing what she was saying.

"No, I'm studying forensic medicine."

"Ha! Then you are really amazing, to be able to do this."

"I just want to help my colleagues. Let's experiment!"

Qu Xiaoshui first packed the enema in a transparent and thin plastic tube similar to a popsicle, carefully sealed it, and then took out the same plastic tube and filled it with some kind of fertilizer (I can’t say it, I’m afraid the cuties will experiment by themselves) , and then stick the two plastic tubes together with scotch tape.

"Ready? I'm going to start."

Nie Xiong and several firefighters around indicated that they could start at any time, and Qu Xiaoshui pierced two plastic pipes horizontally with the awl at hand, and quickly retreated to a safe distance.

Visible to the naked eye, the originally white granular chemical fertilizer on the ground reacted with the transparent yellow enema, turning into a red color like blood.After a few seconds, white smoke rose slowly.Everyone's hearts tightened.

Sparks began to flicker near the plastic pipe, and a slight hissing sound came into my ears, and then a large fiery snake suddenly jumped out to a height of one or two meters, burning violently.

"Oh!" Everyone exclaimed in unison.He quickly extinguished the rising flames with a fire extinguisher.

"Sure enough!" Through the control of measurement, the fire time can be controlled, and the duration can also be controlled. "Thank you, I have found the answer, please resubmit the fire report!"

"This is what you found out, so it's okay to give up the credit like this?" Nie Xiong stopped Qu Xiaoshui.

"I've got what I want, and I'll trouble you for the rest! We have time to have dinner together!" She patted Nie Xiong on the shoulder and rushed to the police station without looking back.

(End of this chapter)