Autopsy in the morning and a blind date with Boss Yang in the afternoon

Chapter 108.

Because various organs of the human body are circulatory.

Therefore, poisons take different times to enter various organs and tissues, and can even reach hair and nails.

Some poisons may remain in urine and blood for less than a day, but they can remain in hair and nails for a long time.

This is of course because hair and nails are like dead objects after they grow out of the body.

Chen Fan cut off a strand of Zhang Guoqing's hair, chopped it into pieces, and put it into liquid nitrogen.

Watching Chen Fan's operations.

Mai Mai asked from the side and said:"Can hair test the time of drug intake in the body?"

At this time.

Chen Fan nodded and said:"We can extract from the hair all the poisons that readers have ingested in the recent period."

【Such high technology... Sure enough, those who dare to commit crimes nowadays are powerful people.……】

【Science and technology are not developed in vain... I hope some criminals will stop doing this kind of thing after watching this program... No matter how covert you are... the police will find clues.】

【Agree with the comment above... I hope there will be less crime in the world. 】

Put the chopped hair into liquid nitrogen at minus 200 degrees, and the hair will be broken into nano-scale particles.

280 These nanometer-sized particles contain toxins.

Chen Fan separated these toxins and confirmed that the toxin was still arsenic trioxide.

Chen Fan looked at the curve on the computer screen and said:"I detected arsenic trioxide three centimeters above the root of Zhang Guoqing's hair."

"According to the pattern of hair growth, Zhang Guoqing experienced at least three months of chronic arsenic poisoning before his death!"

Maimai extracted the key points immediately and said:"At least three months? ? Less than half a year after Zhang Guoqing returned home, he experienced three months of chronic arsenic poisoning. In other words... someone poisoned Zhang Guoqing for three months... Oh my god... this is too terrible!"

"Who is it... Didn't the grandparents at the entrance of the village say that Zhang Minqing has always respected his eldest brother Zhang Guoqing? Could it be that he respected him on the surface, but secretly poisoned his brother? Chen

Fan denied this statement and said:"This poison was not caused by Zhang Minqing. When we were secretly looking for clues before, our grandparents also said that Zhang Guoqing and Zhang Minqing only interacted with each other during the holidays, and at other times." No contact"

"That means... Zhang Minqing has no chance to poison Zhang Guoqing.

Mai Mai became even more confused and said:"Then who else will give it to me?"……"

But before Mai Mai finished speaking, she suddenly thought of someone.

Zhang Guoqing’s wife-Li Huilan!

Li Huilan once deliberately concealed Zhang Guoqing's domestic violence from the director of the police station.

Mai Mai suddenly realized,"Is it possible that Li Huilan, because she couldn't stand Zhang Guoqing's domestic violence, put poison in Zhang Guoqing's cell phone and prepared to poison Zhang Guoqing to death."

Chen Fan nodded and said,"It's not impossible....But...I don't know what the specific facts are...I will tell the director about this...and let him continue the investigation."

【I think Mai Mai’s guess is very reasonable!!!】

【Mai Mai finally got smart for once...but I'm curious...are arsenic still sold now? Shouldn’t the country control this kind of poison?】

【Upstairs... I study Chinese medicine. Arsenic is actually a refined product of arsenic trioxide produced by sublimation of arsenic, which is distributed in many provinces. It is often used for hemorrhoids, malaria and other diseases. Therefore, as long as someone wants to use arsenic to kill people, it is not impossible to buy it. 】

Chen Fan immediately told the director the information he detected.

The director was also surprised.

After all, Chen Fan had previously guessed that Zhang Guoqing drank raw aconitum wine and was poisoned by aconitine, so he didn't scream when someone drove an iron nail into his head.

But now... it has become arsenic trioxide poisoning again...

The director went to interrogate Zhang Guoqing's wife Li Huilan without stopping.

Because there is solid evidence.

Li Huilan no longer concealed the facts and told the truth.

Chen Fan looked at the interrogation information sent by the director in his hand, and Mai Mai couldn't wait to get over it.

The interrogation materials read: Because his wife Li Huilan fell ill and used up all the family's savings, Zhang Guoqing's character became more and more irritable. After returning to his hometown, he saw his younger brother Zhang Minqing making a little fortune by running a B&B, and he complained even more. Incessantly.

On the day of Zhang Guoqing's death, Zhang Guoqing found three stacks of old-fashioned banknotes left by his parents in the attic of the house his parents left him.

Zhang Guoqing was so happy that he took the three stacks of banknotes and went to Zhang Minqing's house for a drink. He made arrogant remarks at the wine shop and drank a lot of raw aconite wine.

Then, when Zhang Minqing asked Zhang Guoqing to stay overnight, Zhang Guoqing refused and left Zhang Minqing's home.

The drunk Zhang Guoqing accidentally walked into the amusement park. Because he could not find his home and Zhang Guoqing was deeply poisoned, he lost consciousness.

Li Huilan and her son Zhang Ming had already gone to search for Zhang Guoqing when they discovered that he had not returned home. After finally finding Zhang Guoqing in the amusement park, they found that he had lost consciousness.

At that time, his son Zhang Ming thought of his father's frequent domestic violence against his mother, so he took out the iron nails he carried with him from his father Zhang Guoqing's clothes bag and inserted them into Zhang Guoqing's head.

Afterwards, Li Huilan took her son Zhang Ming and left the scene of the crime.

The next day, Li Huilan asked her son Zhang Ming to deliver the furniture packed for the client to the city and give Zhang Ming alibi.

Then at six o'clock in the morning, he pretended to be looking for him in the village. It was after seven o'clock that he started to call the police.

Mai Mai never expected that she had guessed the truth, so she couldn't help but feel a little happy, and said:"Let me just say... there must be something wrong with Li Huilan."……"

But the joy is not over yet.

Mai Mai's expression suddenly dropped again, and she said:"Poor and lowly couples are miserable... It was supposed to be a happy family... but because of an illness... the mainstay of the family changed in personality... In the end, his wife and son Unable to bear his domestic violence... he killed Zhang Guoqing……"

Seeing Mai Mai being so sad, Chen Fan gently patted Mai Mai's head for the first time to express comfort.

Actually.

As a forensic doctor, Chen Fan often encounters such incidents.

But as a celebrity, this is indeed the first time that Mai Mai has encountered such a thing, and she will definitely find it difficult to accept it.

Mai Mai said:"Actually... both Zhang Guoqing and Li Huilan are also poor people.……"

Chen Fan nodded and said:"But we can't not act in accordance with the law just because others are pitiful. The law is the lowest bottom line for human beings."".