Han Bo also hoped that he would make a mistake in his judgment, but the test results proved that the judgment was correct. Not only was it correct, but the problem was also more serious than expected.

Wan Peng has a certain chemical foundation and participates in the inspection throughout the whole process. How can he not know what the inspection results mean? He raised his arm to look at the time on his watch and reminded carefully: "Captain South Korea, now 11:57."

"Carry it out."

Han Bo took out his pen to fill out the inspection report, signed the name, got up and opened the window, took a few breaths of cold air, took out his cell phone to dial the number of "Lao Shuai".

The phone I just changed, and after plugging in the card, the first call was to call Han Bo. Wei Guoqiang deliberately pressed the speaker and asked Director Chen and Deputy Director Cui in person: "Have the test result come out?"

"It came out, and the explosion residue mainly includes three components: chlorine-potassium acid, nitricammonia and tri-nitro-yl-thylenyl benzene, and the chlorine-potassium acid-potassium content is the highest."

"Will you make a mistake?" Wei Guoqiang asked with no confidence.

Han Bo touched the corner of his mouth and said solemnly: "Wei Detachment, chlorine-acid-potassium is a strong oxidant and has always been the main oxidant for civilian fireworks and firecrackers. Today, with the highly developed and popularized scientific knowledge, various methods of making explosives are constantly being used by some illegal elements.

In addition, the raw materials for making chlorine-acid-potassium-fried medicine are simple and easy to obtain, simple to make, have a high sense of explosion, and are easy to detonate. They are ideal types of explosives for criminals to carry out terrorist explosion activities. They often appear in criminal cases, so the inspection and analysis of such explosives is a common topic in criminal technology."

The implication is very clear, and the test results will not be wrong.

Wei Guoqiang was completely dispelled for the last time and touched the back of his head and asked: "What is Sannitro-yl-methyl-benzene? Is this a earth bomb or a foreign bomb?"

"Tri-nitro-yl-methyl-benzene is what we usually call ***. The residue is detected in the small amount, and the suspect may think that the *** is not enough, so he added chlorine-acid-potassium and nitric acid to make a homemade earth bomb."

"How can I detonate?"

"If the ** is produced by a designated national enterprise, then only the lightning tube sensitivity, that is, the explosive can explode only when the lightning tube is used as the detonation source. The addition of chlorine-acid-potassium is different. The thermal stability of chlorine-acid-potassium is poor and the mechanical sensitivity is high. Mixing with ammonium nitrate, nitrate-ammonium-phosphorus, nitrate-ammonium-calcium, ammonium nitrate zinc and other ammonium salts will produce metathesis to form chlorine-acid-ammonium, and ammonium chloride can decompose or even explode at 30c~60c.

Therefore, the state explicitly prohibits the use of chlorine-acid-potassium to produce explosives. However, in order to increase the sensitivity of explosives, some criminals ignore national regulations, ignore life, and act boldly, mix chlorine-acid-potassium with ammonium salt, charcoal, sulfur and other combustible substances to make explosives. Every year, one or two private-fried explosives containing chlorine-acid-potassium will occur, and each accident will cause casualties."

Wei Guoqiang looked at Director Chen and asked: "Xiao Han, you have seen the world and personally inspected the scene. How do you think the bomb was detonated?"

"Wei Detachment, our investigation at night was not detailed. The scene was so messy and so many people had no conditions to conduct detailed investigations. If you want to figure out how the bomb was detonated, you have to collect all the debris and ask every witness present, you must be careful and carefully investigated."

"I can't see clearly at night and it's easy to miss clues. How about tomorrow morning?"

"no problem."

"Then you hurry up and take a break and act on time at 6 o'clock tomorrow."

It is no joke to investigate the cause of the explosion. Han Bo hurriedly said: "Wei Detachment, I need an air conditioner of the same type. I want to remove all the air compressors, condensers, filters, valves and other spare parts and wires, and compare them with the fragments collected on the spot."

The detonation device can be blown up or blown away, but it is impossible to completely blow up.

A piece of shredded paper the size of a nail, an inconspicuous piece of copper, and a wire are likely to be clues to the case. How could Wei Guoqiang not meet this condition and agreed: "I will arrange someone to look for it overnight and will be in place before 8 o'clock tomorrow."

"Thank you, Team Wei."

"Don't thank you, take a break soon."

The "Korean strike" was indeed aimless. Director Chen rubbed his temples and said coldly: "Old Cui, report the case to the Provincial Department. In addition, given the insufficient explosion power of our Nangang Armed Police Detachment, please coordinate with the Provincial Department to see if we can send some reinforcements to us. It has caused such a large casualties and no unnecessary sacrifices can be made. When the explosion personnel confirm that there is no second bomb at the scene, let Xiao Han take people in for investigation."

"Okay, I'll go out and call."

"Old Wei, immediately draw elite troops from each unit and set up a special task force for the major explosion case. As long as it can be investigated and solved quickly, the funding is not a problem."

"yes!"

The major cases were solved, and the investigators were awarded for their meritorious service.

Before the major case was solved, the investigators were the most painful, tiring and stressful.

The police officers of the technical brigade who do not need to be on duty, including Han Bo, can have a sleep, but the investigators don’t have time to sleep.

At the order of Director Chen, the "Old Commander" dispatched troops and generals, and from the Criminal Police Detachment, the Criminal Police Brigade of the Port District Branch, the Public Security Brigade of the Branch and the police station where the crime was found, they set up a special task force, and set up the special project command center at the Second Squadron of the Fourth Traffic Police Brigade not far from the explosion, and organized the investigation overnight.

After sleeping all day, such a big case happened again, Han Bo couldn't fall asleep, and his mind was full of scenes of the crime scene.

The first time I encountered an explosion, Wan Peng and others in the same dormitory couldn't sleep, and they tossed and turned, making the bed creak.

"Captain South Korea, can you smell the smell of explosives?" Guan Xiaokang couldn't help but turn over and lie on the bed and asked.

Han Bo did not want to be regarded as a freak by his subordinates, and he didn't want to have another nickname of "police dog". He closed his eyes and said, "This is not how sensitive I feel, but I have smelled it before, and I have an impression of this smell. However, there is really a senior who can distinguish the ingredients of explosives through the sense of smell. He is known as the "Explosion King". Someone once mixed seven or eight different explosives together, blindfolded his eyes and let him distinguish them with his nose, and the result is not bad at all."

"So awesome!"

"The director of the Technical Processing Laboratory of the Criminal Investigation Bureau of Chengdu Municipal Bureau is both the 'explosion king' and the 'physical evidence king'. He successfully linked three explosion cases through the analysis and comparison of explosion residues the year before yesterday. That case is the first classic case in the country to use physical evidence on the explosion site to solve the case across provinces, and was included in the public university textbook."

Anyway, I can't sleep, so I'd just talk to them to boost morale.

Han Bo opened his eyes and said with a smile: "Our technical police officers are different from the 110 patrol police who share the worries and problems for the people, different from the criminal police who bravely captured the murderer, and also different from the fire and armed police who go through fire and water. Our job is to remove the false and retain the truth from clues and identify good and evil. It can be said that we are the heroes behind the scenes.

Although our technical police account for only 2% or even less than 2% of the total police force, they are definitely a capable teacher with the highest education and quality. They not only have the only academicians of the Academy of Engineering in the national political and legal system, but also hundreds of experts who enjoy special government allowances and thousands of high-quality young talents."

You are, we are not, you don’t have a back pain when you stand and speak.

Wan Peng secretly complained and said sourly: "Captain Han, I feel that you are better than us in the branch and the county bureau's technical squadron. You are our leader. For them, you are just a guide and cannot be so generous to one or the other."

"You know what I did some time ago?"

"I know, I didn't know it a few days ago."

"Do you know why?"

"Why?"

Han Bo patted the wall and said in a temptation: "You feel that you are very hard-working, and you really have a hard time. You feel that you have no hope of doing technology and have no future. But the colleagues of the technical squadron of the county bureau are even harder. You are at least in the city bureau, at least in the city. They are in the county, with a total of three or four people, but they are responsible for investigating all the criminal cases in the district and county.

On average, the number of cases is about 500 to 1,000 per year. According to regulations, the on-site inspection must not be less than two people, which means that most of them have to go to these scenes. Each investigation, the theft scene may be completed in one to two hours, and major cases such as murders may even last for several days..."

Compared with the district and county public security bureau colleagues, the technical police of the municipal bureau are really not hard, and Wan Peng and others are silent.

Han Bo sighed lightly and then said, "Things are relative, and comparison is also relative. We complain, and the people will ask, how hard your policeman is, can you be more difficult than workers? How can workers compare with miners? People used to say that there are three hardships in life, and they can make tofu by running a boat and making iron.

Can you compare with others? Your workers have at least a union, retirement wages, and medical insurance. What do farmers have? You can't compare like this. If you are aggrieved by one person, the boss will complain as much as you do."

Wu Yunan asked in a mysterious mission: "Captain Han, do you feel it is hard?"

"I don't complain, but I don't complain, and I feel that there is happiness in suffering. Of course, the reason why I have this feeling has something to do with my family is that my father is a carpenter and went out to decorate very early. My wife does foreign trade, has a good income, has no family pressure, and doesn't need to consider too many realistic issues."

Han Bo smiled awkwardly and said with a little self-deprecating: "You don't need to bow your back for five dou of rice. You can pursue your ideals, and you can even be so high-sounding that others can follow you. When you think about it carefully, you are really ashamed. In fact, you are not qualified to talk to you about whether it's hard to do it."

He is definitely the most humble leader, treating others with a kind attitude without any airs.

Others being modest will give people a sense of hypocrisy and a feeling of being different from others. They give people a completely different feeling, they are very sincere or very real person.

He is very serious in his work and will not say "you follow me", but he can make people follow him involuntarily. And he is indeed of course. Except for forensic testing, there seems to be nothing he doesn't understand in technology.
Chapter completed!