Chapter 44 Chapter Forty-Three

"Boss, I brought back the plastic bottle." Forensic Chen held something in one hand and looked at the report with the other, and said, "People from the Forensic Medicine Division of the City Bureau said they haven't seen such a dangerous thing for many years. It was removed under the equipment of the safety suit." "What's inside?" Wang Gedong asked anxiously. "Sure enough, it's cyanide, the most dangerous of all cyanides, hydrogen cyanide." "Hydrogen cyanide?" Wang Gedong thought about the name, and said, "It seems to be the poison gas used by the Nazis?"

Chen forensic doctor nodded: "That's right, the Nazis used this. Hydrogen cyanide is a gas above 26 degrees Celsius. Now it is winter, and hydrogen cyanide is in a liquid state. This is a highly toxic substance strictly controlled by the public security department. Very simple, just heat with carbon and ammonia in a fixed ratio. The materials needed for the whole process are only simple substances such as methane, sodium hydroxide, ammonia, etc., all of which can be easily extracted from other substances. The murderer can make his own metal sodium And purifying nicotine, not to mention the process of making hydrogen cyanide. The only thing that needs to be paid attention to is the protection of the refiner during the refining process, but since the murderer can purify nicotine, he must be well aware of the protection work in this area. The city bureau passed the appraisal , It was found that the concentration of hydrogen cyanide in the plastic bottle was as high as 95%, plus the high-purity nicotine produced by the murderer. Experts from the Municipal Bureau said that if the murderer did not use industrial equipment to complete the experiment, then his accuracy of the experimental conditions and the dose matching of various substances , is definitely an expert among experts.”

Wang Gedong pursed his lips tightly and his face turned blue. This series of evidence further strengthened his judgment that the murderer was Gan Jianing. Ordinary chemical industry practitioners simply do not have this level of professionalism. Even if they can extract nicotine and hydrogen cyanide, the purity will not be as high as the industrial level.Only Gan Jianing's classmate, a professional from a major, can make such a terrible poison. Chen forensic doctor opened the plastic, pointed to the inside and explained: "Hydrogen cyanide is highly corrosive, but this PE plastic bottle can be preserved. The murderer got a total of two plastic bottles, filled with hydrogen cyanide, put the The two bottles were tied together. The bottle cap was processed by the murderer, and the battery, motor and remote control device were connected to the outside of the bottle. This set of motor and remote control should have been dismantled by the murderer from a remote-controlled car or toy plane. The murderer took the two Two connected bottles are hung on the fence of the iron gate of Li Gang's house, the height is just about the same as the head of a person. In this way, one bottle is facing the outside of the iron gate, and the other bottle is facing the inside of the iron gate. When Li Qiming is standing outside the gate When Yao Suyue was standing inside the door, the murderer pressed another switch. In addition, the murderer painted the whole device black, and at night It is not easy to be found by the target. Once the murderer presses the remote control switch, the motor will rotate to press down the cork on the bottle cap, and hydrogen cyanide will be sprayed out in a large amount in the form of water mist. Boss, do you want me to try it for you? Look?"

"Okay, try it." Chen Fayi put the bottle on the ground, pressed down the cork with his hand, and the water in it sprayed out. The spraying speed was very fast and the volume was also large. Wang Gedong said: "This thing looks like an air bottle for watering flowers." "Well, that's right. The stopper at the mouth of the bottle was refitted with a gas bottle. Large gas bottles cost more than ten yuan each, and you can buy them anywhere. The murderer took a gas bottle and modified it. First, he pumped enough air into the bottle, causing the inside Once the motor rotates and the cork is pressed down, the poisonous gas inside will spray out, estimated to be able to spray two meters away. The amount sprayed out is much more than that of a large bottle. That is to say, Li Qiming was about to open the door at that time. Even if he sees the bottle, as long as the murderer presses the switch, Li Qiming will be filled with high-concentration hydrogen cyanide gas within two meters, and before he can react, the amount he inhales is enough to kill him. It’s too late to escape.”

Wang Gedong narrowed his eyes slightly: "How far can the remote control be?" "It's not a problem within twenty or thirty meters." "That is to say, the murderer was hiding somewhere outside the Li family's villa at that time. He secretly saw Li Qiming coming home and opening the door. He pressed the remote control switch and poisoned Li Qiming to death. After Yao Suyue walked out, she walked to the iron gate. At that time, the murderer pressed the remote control again?" "That's right, the first bottle is sprayed outwards, aiming at Li Qiming. The second bottle is sprayed inwards, aiming at Yao Suyue."

Wang Gedong added: "At that time, Yao Suyue's attention was all on her son who fell to the ground, let alone the existence of the iron box." Chen Fayi said: "Even if you notice it, it's too late. As long as Yao Suyue steps into the spray radius of the bottle, there is high-purity hydrogen cyanide in it. As long as you inhale it, you will soon have difficulty breathing. At this time, people will involuntarily open their mouths and breathe heavily. , can only hasten death." "There is no way to cure hydrogen cyanide poisoning?" "If you eat it, and immediately find that you have eaten cyanide, and induce vomiting immediately, there is a certain probability that you can save your life. But if you inhale such a high concentration of aerosol, you will have difficulty breathing within ten seconds, and there is no way to save it. "

Wang Gedong thought for a while and came to understand: "If the concentration of hydrogen cyanide in the bottle is not high enough, is there a certain probability for Yao Suyue's mother and child to survive?" "Well, if the concentration is low, the amount inhaled in the first breath is not enough to be completely fatal, and the victim reacts quickly and escapes the spray radius. Although life is in danger, as long as it is sent to the hospital for emergency treatment, it is possible to save life. " Wang Gedong took a deep breath: "The murderer did not hesitate to directly expose his professional level to our police, and produced ultra-high-purity nicotine and hydrogen cyanide. The original purpose was that once implemented, the victim would be 100% dead in just one or two minutes. There is no way to save him. He committed the crime with the attitude that the target must die. What kind of relationship with Gan Jianing can make the murderer so crazy?" Wang Gedong fell into deep thought.