Dissecting corpses in the morning, blind dating with Boss Yang in the afternoon

Chapter 108.

Because the organs of the human body are circulatory.

So the time it takes for poisons to enter various organs and tissues is different, and they can even reach the hair and nails.

Some poisons may exist in urine and blood for less than a day, but in hair and nails, they can exist 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, cut the hair into pieces, and put it into liquid nitrogen.

Watching Chen Fan's operation.

Mai Mai asked on the side,"Can hair be used to test the time the drug is taken into the body?"

At this time.

Chen Fan nodded and said,"We can extract all the poisons that the reader has taken in recently from the hair."

【Such high technology... It turns out that those who dare to commit crimes nowadays are all powerful people.……】

【Science and technology are not developed in vain... I hope that after seeing this program, some criminals will stop doing such things... No matter how covert you do it... the police will find clues.】

【I agree with the above…I hope there will be less crime in the world. 】

Put hair pieces into liquid nitrogen at -200 degrees Celsius, and the hair will break into nano-sized particles.

Toxins are hidden in these nano-sized particles.

Chen Fan separated these toxins and confirmed that the toxin is 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 law of hair growth, Zhang Guoqing had experienced at least three months of chronic arsenic poisoning before his death!"

Mai Mai got to the point immediately and said,"At least three months? Zhang Guoqing had been home for less than half a year, and he had experienced three months of chronic arsenic poisoning, which means... someone poisoned Zhang Guoqing for three months... Oh my God... This is too terrible!"

"Who is it... Didn't the old man and the old woman at the entrance of the village say that Zhang Minqing always respected his elder brother Zhang Guoqing? Could it be that he was respectful on the surface, but secretly poisoned his brother?"

Chen Fan denied this statement and said,"The poison was not given by Zhang Minqing. When we were secretly looking for clues before, the old man and the old woman also said that Zhang Guoqing and Zhang Minqing only interacted during festivals and holidays, and did not interact at other times."

"That means... Zhang Minqing didn't have the chance to poison Zhang Guoqing."

Mai Mai was even more confused and said,"Then who else would poison Zhang Guoqing?"……"

But before Mai Mai finished her words, she suddenly thought of someone.

Zhang Guoqing's wife - Li Huilan!

Li Huilan once deliberately concealed the fact that Zhang Guoqing abused her from the police station chief.

Mai Mai suddenly realized and said,"Is it possible that Li Huilan, because she couldn't stand Zhang Guoqing's domestic violence, put poison in Zhang Guoqing's body and planned to poison him to death?"

Chen Fan nodded and said,"It's not impossible...but...I don't know the specific facts...I will tell the chief about this...and let him continue to investigate."

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

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

【The person above... I am a student of Chinese medicine. Arsenic is actually a refined product of arsenic trioxide generated by the sublimation of arsenic stone. It 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 had detected.

The director was also surprised.

After all, Chen Fan had previously speculated that Zhang Guoqing did not scream when someone drove an iron nail into his head after drinking raw aconitine wine and causing aconitine poisoning.

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

The director immediately went to interrogate Zhang Guoqing's wife Li Huilan.

Because there was solid evidence.

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

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

The interrogation materials stated: Because his wife Li Huilan was ill and all the family savings were used up, Zhang Guoqing's personality became more and more irritable. After returning to his hometown, he saw that his younger brother Zhang Minqing had made a little fortune by running a homestay, and he complained in his heart.

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

Zhang Guoqing was overjoyed, so he took the three stacks of banknotes and went to Zhang Minqing's house to drink. He also spoke wildly at the wine party 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.

Drunk Zhang Guoqing accidentally walked into the amusement park. Because he couldn't find his home and Zhang Guoqing was deeply poisoned, he lost consciousness directly.

Li Huilan and her son Zhang Ming went to look for Zhang Guoqing when they found that he had not returned home. Finally, after finding Zhang Guoqing in the amusement park, they found that he had lost consciousness.

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

After that, Li Huilan took her son Zhang Ming and left the crime scene.

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

Then at six o'clock in the morning, she pretended to look for him in the village, and at around seven o'clock, she called the police.

Mai Mai never thought that she had guessed it right.���After hearing the truth, he couldn't help but feel happy and said,"I told you... there must be something wrong with Li Huilan.……"

But he was not happy yet.

Mai Mai's face suddenly became depressed again, and he said:"A poor couple has many sorrows... It should have been a happy family... But because of an illness... the mainstay of the family changed his personality... In the end, his wife and son could not stand his domestic violence... and killed Zhang Guoqing.……"

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

In fact, as a forensic doctor, Chen Fan often encounters such incidents.

But as a star, Mai Mai is definitely encountering such a thing for the first time, and she must find it hard to accept.

Mai Mai said:"In fact... whether it is Zhang Guoqing or Li Huilan, they are also poor people.……"

Chen Fan nodded and said,"But we cannot ignore the law just because others are pitiful. The law is the lowest bottom line for human beings.".