Hearing this, Wu Ke felt a little strange, so he asked: "I saw a magazine last time, which said that oil paintings were identified with carbon-14, and the results have a high reference value. ”

Carbon-14 is a radioactive isotope of carbon that was first discovered in 1940. It is produced by cosmic rays striking nitrogen atoms in the air, and its half-life is about 5730 years, and the decay mode is β decay, and carbon 14 atoms are converted into nitrogen atoms.

Since the proportion of carbon in nature has always been stable, and carbon is one of the elements of organic matter, with a half-life of 5730 years, one can estimate the approximate age of an antiquity by pouring its carbon-14 content. This method is called carbon dating. Carbon-141 identification is widely used in archaeology and identification.

Nan Nancai smiled slightly: "It's not that I don't want to do it, but carbon 14 is not actually very authoritative in any case." This painting of mine was actually picked up in a garbage can, and in this case, even if I use carbon 14 for identification, the results given are completely useless. ”

The identification of carbon-14 is limited, because the large amount of carbon produced by artificial nuclear explosions has a great impact on the atmosphere, and since the industrial revolution in the 18th century, the common carbon element C in the atmosphere has increased greatly, which has a great impact on the ratio of carbon elements, and the internationally recognized BP starting point in carbon-14 dating is 1950.

In general, the samples must be free of contamination, and if early or late carbon is accidentally mixed in, the results will be very different from what we want.

Therefore. Without a strict description of the sampling process, it is not credible to draw conclusions. In archaeological excavations, the results of the carbon-14 determination remain a reference position. Not to decide status.

Archaeology is still the case, and then look at calligraphy and painting, can it have the conditions for carbon 14 detection?

First of all, what era of biology is used for calligraphy and painting paper? How many years has the finished product been aged? In what way? Is there air convection in the aging conditions? Does the calligrapher and painter introduce pollution during use? What biomaterials are used in pigment inks, and the above questions?

How do I save my work after I have created it? How does framing affect the work? Does the framing process introduce materials of different ages? Is a liquid, such as water, used in the framing process? How to collect and exhibit the works? What is the air convection situation in the collection and exhibition? and so on.

This also makes it possible for calligraphy and painting works to be identified using carbon-14, which can generally only serve as a dispensable reference value.

In fact, any test should be based on the substance. To detect the age of a sample, it is necessary to find a substance that correlates completely linearly with the age variation, and in the field of painting and calligraphy, such markers are difficult to find.

All the substances in the calligraphy and painting works all start from different starting points and go through different circulation and pollution to the present, and it is difficult to circumvent the scientific explanation of the sampling process for the determination of any substance content, not only the determination of carbon 14.

The portrait of the girl in front of me, since it was found in the garbage can, the oil paint on it must be more or less contaminated, in this case. Carbon-14 is definitely not going to work.

After listening to Nan Nancai's explanation, Chu Chen and Wu Ke understood why Nan Nancai didn't go for an appraisal, but they were even more surprised that this painting was actually picked up from the garbage can. That's a bit of a, isn't it?

Seeing the surprised looks of the two, Nan Nan was also very proud of his good luck.

He smiled and said, "It's a coincidence, last year." I visited a friend of mine when he was discharged from the hospital. When leaving. I coveted the proximity, so I walked down an alley to the parking lot. I saw the painting in a dumpster set up in an alley. ”

"At the time, I thought it was just a copy, but when I looked at it, I realized that it was actually a real oil painting, and the surface was not very affected by the canvas except for some dirt on the frame, so I took it back."

After listening to Nan Nancai's narration, Chu Chen and Wu Ke finally understood why this picture frame looked so shabby. But even so, the two still felt quite incredible, who was so bold that they could throw something that might cost hundreds of thousands of euros in the trash.

Chu Chen was a little skeptical, this might be a deliberate statement given by Nan Nan, but it wasn't actually like that.

"Boss, why don't you change the frame?" Wu Ke frowned and said, she had a little cleanliness habit, as soon as she heard that this painting came out of the garbage can, she suddenly felt a little tired in her heart, if it was her, she would definitely not want such a thing.

When Nan Nan heard this, he understood Wu Ke's thoughts, and he said with a smile: "Although the frame is a little old, it is also the original frame of the nineteenth century, and I have already asked someone to clean it completely, so there will definitely be no problem." ”

Hearing him say this, Wu Ke was a little unimpressed, for people with cleanliness, this kind of pimple must not be easy to eliminate.

Chu Chen didn't care about this, he was most concerned about one question now, if this painting was mistakenly thrown into the trash by someone else, what would the ownership say? So, he asked, "Boss Nan, can you guarantee that the original owner didn't accidentally discarded it?" ”

Nan Nan said with a smile: "Don't worry about this, I also have connections in the local police station, if it was lost by mistake, then the original owner can't say that he hasn't called the police, right?" It's been almost a year now, and no one has reported the case at all. Moreover, if you agree to the exchange, we can sign a contract, and if there is a problem in the future, I will bear all your losses. ”

Originally, he didn't want to take out this painting, but he liked Chu Chen's Arhat bracelet too much, and Chu Chen's eyesight was extremely high, he felt that if he didn't come up with a heavyweight work, it would definitely be impossible to move Chu Chen's heart.

Just like Chu Chen said just now, since he can't have both fish and bear's paws, then he can only choose what he wants in his heart.

Listening to Nan Nancai's words, Chu Chen pondered for a while, in fact, if he hadn't taken advantage of Nan Nancai's words just now and made an accidental discovery after using his ability, he would really not be interested in such an imitation, but now he unexpectedly found that even if there may be disputes in the future, he would take down this painting.

Of course, since Nan Nan just said so, the possibility of a dispute is very small, and if there is a dispute, he can at most return the painting in front of him to others.

"Unexpectedly, I still can't resist the temptation in my heart!"

Chu Chen laughed at himself, and then said with a smile: "Since you are so sincere, boss, then what reason do I have to object to this matter?" ”

Nan Nan heard the answer she wanted, and she couldn't help but be overjoyed, and she laughed like a flower.

However, Chu Chen immediately said: "Difficult boss, I don't know much about the market value of oil paintings, and I don't know much about the value of your imitation work!" ”

Chu Chen's words are the truth, he is not too interested in oil paintings, the price of oil paintings, or from the "School of Athens" to understand, but just like this, he only briefly understood, as for the imitation painting market of famous artists, he did not know much about it.

But Chu Chen has the price given by the ability as a reference, and if Nan Nancai wants to fool Chu Chen, it will be a big mistake.

Nan Nan heard Chu Chen say this, not only did he not have the idea of wanting to fool Chu Chen, but he also secretly scolded Chu Chen as a "little fox", but this was because he felt that Chu Chen might be using this matter to test him, if the price offered was not satisfied, this business would definitely be yellow.

He smiled and said: "Mr. Chu, don't worry about this, I have been in business for so many years, and I still know the four words of honesty, and if the price is not satisfied, we can also discuss!" In this way, the reference price given to me by the appraiser before was 450,000 euros, since I got it for nothing, I will give you some profit, 400,000 euros, what do you think? ”

Chu Chen said that just now, in fact, it is also a counter-offer technique, between the virtual and the real, so that Nan Nan did not dare to open the price too much, of course, things did reach a certain expectation, but when he heard the price that Nan Nan offered, he secretly pouted and secretly scolded the "profiteer".

To say, if this painting is genuine, even if Nan Nan adds two more zeros, it is too little, but from the real to the imitation, it is really a jump price, and the price given by the ability is actually only 300,000 euros. If it was exchanged for the price given by the ability, Nan Nan would have to pay Chu Chen money.

Of course, the price given by the ability is actually relatively low, and the transaction in the market must add some subjective factors to the person, but even if the price increase of this point is added, Chu Chen feels that the price of the painting in front of him is only the same as the value of his three things, not to mention, Nan Nan is still the one who asks for help.

So, the next two of them had a war of words without gunsmoke, and in the end, Nan Nan was defeated, in addition to the oil painting in front of him, he also gave Chu Chen some discounts, which were used on the two pieces of porcelain he had just brought on the table and the nine-eyed dzi that Chu Chen had looked at before.

After the transaction was completed, Nan Nan also breathed a sigh of relief, he was still quite satisfied with this result, not to mention what he was satisfied with, and he also made a lot of money, and what he paid was just an imitation of Leonardo da Vinci.

But Nan Nan didn't know that it was his decision that seemed to make a cheap profit, but he lost a chance to make a fortune, if he knew the truth, it is estimated that even his intestines would be repentant. (To be continued......)