Inside the appraisal room!
Director Dama looked at the peak of arsenic on the energy spectrum that Shen Ting pointed to and asked in confusion:
“Brother Shen, did you get the wrong atlas?
Or, is it pointing to the wrong place?
Isn't the second abnormal substance just identified, 'arsenic-protein complex', based on the abnormal arsenic element in this energy spectrum?
Why is it referring to arsenic now?"
Chen Ting smiled and said, “You’re not wrong!
The third special substance is also based on the anomaly of arsenic.
I judge that arsenic alone would not cause such obvious abnormalities.
Especially!
After determining that the second special substance is arsenic-protein complex.
I tried to remove this part of the arsenic element, but found that the anomaly of arsenic in the energy spectrum could not be completely eliminated.
This further supports my idea that there is a third special substance containing arsenic in the blood sample."
So that’s it!
Director Dama seemed to be thinking about something, but soon frowned again.
Shen Ting’s explanation is easy to understand.
Although he didn't understand, before confirming that the second special substance was an arsenic-protein complex, how could Shen Ting be sure that there was a third special substance.
I also don’t understand how, after the identification is successful, they eliminate the influence of arsenic in the arsenic-protein complex?
But, since Shen Ting said so, it must be correct.
But the biggest problem now is!
A method has been used to separate specific substances containing arsenic and has been successful.
So how do we separate this second special arsenic-containing substance?
Using the same method again, you know without thinking that it won’t work.
But if we want to use a completely new method, how many new methods are there?
Director Dama felt that he had gained a lot of knowledge from Chen Ting's method of separating two special substances.
He hesitated and asked the question in his mind.
Shen Ting seemed to take it for granted:
"Of course we need to use a completely new method to separate and identify it!"
He immediately began to instruct Director Da Ma to operate on the blood sample.
Director Dama was surprised and followed Shen Ting's instructions strictly.
According to the rules agreed upon before by him, Shao Ming, Zhang Chuanyi and others.
He should actually take the responsibility of reviewing!
As a professional appraiser, he had to first review the feasibility of the method proposed by Shen Ting.
Then proceed with the specific operations!
But now, if Shen Ting's identification ability has reached the expert level.
Director Da Ma feels that he is at most at the elementary school level.
Moreover, he has just entered school and is at the elementary school level and doesn’t even know the multiplication table.
Let him, a primary school student, review the identification methods of top experts?
What the hell is he reviewing? ! !
…
The difficulty of separating and identifying the third special substance is obviously much more difficult than the first two.
The time spent is also several times longer.
Director Dama's expression became more and more shocked and expectant.
Therefore, this time, Shen Ting did guide him and used a completely different identification method.
The key is!
Separation was also completed smoothly!
It was a yellow substance, and preliminary identification confirmed that it did contain arsenic.
A moment later, the identification of the yellow substance was successfully completed.
“Oh my god, that’s awesome!
So cool!
There are actually two kinds of special substances containing arsenic! "
Director Dama looked at the final identification results with an uneasy look on his face.
Chen Ting was just the opposite, his expression didn't fluctuate at all.
The reaction was even less significant than when the first two special substances were identified.
Because the first two special substances can actually explain many problems.
This third substance can only be regarded as icing on the cake, confirming Shen Ting’s speculation about the first two substances.
He held the three identification results, thought for a moment, took out his mobile phone, searched for some information, and then walked out of the identification room.
The police officers outside were already getting impatient waiting.
As soon as they saw Chen Ting open the door and walk out, they all rushed to Chen Ting like flies swarming towards pork belly just out of the pot and surrounded him.
"Chen Ting, how is it? Are there any results from the appraisal?"
"Look at Director Dama making such a fuss in the identification room. He must have figured it out, right?"
“Advisor Shen, please tell me!
What exactly are these three special substances?"
"The key is, is there a chance to identify the murderer through them?"
…
Shao Ming, who was standing at the front of the police, waved his hand to interrupt everyone's questions:
"Don't be anxious, let Shen Ting speak slowly."
Shen Ting directly handed the appraisal report to Shao Ming and said with a smile:
“Thanks to Director Ma’s help, the identification went smoothly.
The three special substances I estimated earlier have all been identified..."
Director Ma next to him waved his hands repeatedly:
"No, no, no, Chen Ting, you are trying to torture me!
I don't have that much ability.
The entire identification process was actually all thanks to Shen Ting!
I'm just an assistant and have made no contribution at all.
Chen Ting, please tell everyone about your discovery!"
Shen Ting nodded and continued:
“If you look at the first appraisal report, you will find that.
After we successfully separated the first special substance, we used gas chromatography-mass spectrometry to detect the characteristic peak of dimethyl sulfide.
In the micro-infrared spectrometer, the absorption band of CS bond at 680cm?1 was also shown.
It was finally confirmed that this was a 'cyclic sulfide crystal'.
The second special substance was detected to have an abnormal distribution of arsenic under an atomic fluorescence spectrometer.
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