When it comes to arsenic, we have to mention centipede grass.

Removal of heavy metal pollution such as arsenic and mercury is a problem that has long plagued scientists.

However, scientists later discovered a strange phenomenon: in some land and water bodies with serious arsenic pollution, most of the plants have died, except for the fern such as centipede grass.

After laboratory tests, scientists found that centipede grass not only has a strong super-adsorption capacity for arsenic, but also has a certain effect on the adsorption of other heavy metals.

After testing, centipede grass has two or three hundred thousand times higher arsenic content than ordinary plants. It is rich in toxic substances and is a plant resistant to arsenic toxicity.

If centipede grass is used to extract heavy metal pollutants such as arsenic from the soil, and then harvested and burned, the amount of toxic waste gas will be greatly reduced, and the ash after incineration can also be turned into mineral resources for smelting.

Under ideal conditions, the arsenic content in plants can be as high as about 20%, which is equivalent to a mineral resource.

And as far as Zhou Wen knows, scientists are already studying "cultivating metals."

For example, Alan Baker, a botanist at the University of Melbourne, is practicing this model.

He planted a super-enriched nickel tree in a 50-acre nickel mine polluted area. After cutting the bark, a blue-green liquid will flow out, like a gum. 1/4 of the nickel inside is higher than the ore content of the nickel smelter. high.

Then the purified metal is extracted and sold.

In addition, the smelter has to pay him high environmental management fees.

...

Zhou Wen stepped forward to check the super-rich arsenic plants.

The young black man followed. He pointed to the roots of several needle trees that he had cut from the middle and said: "The last time I fell these bushes, the slurry on the bushes stained my hands. I felt very uncomfortable at the time. Then I went back. I went home, and soon my hands became like this."

Zhou Wen studied it carefully.

This is a shrub plant called "needle tree" locally. It is covered with pointed barbs and is very ugly. It is commonly grown in the rainforest.

Even though it is a shrub, its root system is quite developed and belongs to a deep-rooted plant. Its taproot can penetrate more than 5 meters underground, and some can even reach 10 meters.

So if it is not surprising, there should be arsenic mines underground, otherwise it cannot explain the growth area of ​​hyper-arsenic plants, but other plants are not affected.

There are a dozen needle trees here.

Zhou Wen and the bodyguard asked for a dagger and cut a knife on the stem of the needle tree.

Needle Tree: "Knock you... It hurts me to death."

Zhou Wen: "Shut up, I'm collecting samples!"

The needle tree was obviously frightened, and its IQ obviously couldn't understand it. Why can primates understand its language?

At this moment, a milky-white liquid came out of the cut stem, which fell to the ground "tickly".

While collecting samples, Zhou Wen asked: "By the way, are there arsenic mines underground?"

The needle tree does not speak.

Zhou Wen snapped a branch with a "click".

Needle Tree: "Knock you... It hurts me to death."

Zhou Wen: "Are there arsenic mines underground? If you don't say anything, I'll uproot you later."

The needle tree shivered.

Zhou Wen: "Is there any?"

Needle Tree: "Yes!"

Zhou Wen: "Then I won't pull you out today."

After Zhou Wen collected the samples, he turned around and asked, "Where are these similar plants?"

The old black man with moderate arsenic poisoning pointed to the east and said a few words. The young black translator said, “He said there are still in the woods to the east, and he was poisoned there.”

"How far is it?"

"About a mile."

Zhou Wen looked at the sky, before he had time, and said, "Go, take me over and take a look."

Black youths are relatively lazy and are unwilling to take him over to see him, including those locals who are unwilling to run away.

Zhou Wen said to the black youth: "You take me over to see, I will help you heal your hands. I believe you have also gone to the hospital for treatment. This kind of localized metal poisoning is very difficult to cure. No one can cure it except me. Healed!"

The black youth discussed with everyone.

These people are all relatives who have had deceased relatives. Hearing that Zhou Wen could help young people and old men to treat diseases on their hands, they all agreed.

Zhou Wen led a security guard and followed everyone toward the thorny woods, while the others stayed in place to take care of the vehicles.

There is a small path in it. According to the black youth who led the way, it was stepped on by the South Africans who stole the baobab trees in their village, and this place belongs to the territory of Botswana.

One mile is approximately equal to 1,600 meters.

It took nearly an hour to reach the place in the rugged, thorny jungle.

"Now, it's here." The young black man pointed to the dark bushes ahead and said.

Zhou Wen stepped forward and saw that it was really true.

There are many needle trees here, visually there are 20 to 30 trees.

Zhou Wen collected samples from the thickest needle trees.

Of course, every time I was scolded by the tree.

Zhou Wen asked the same question to the last needle tree collected, "Are there arsenic mines underground?"

Without waiting for the needle tree to answer, he broke a branch with a "click," and the needle tree squeaked and barked with pain.

Needle Tree: "Why did you break my hand?"

Zhou Wen: "Do you understand? I'm afraid you won't tell me, so I will show you one first."

Needle Tree: "But I'm about to tell you."

Zhou Wen: "...I'm sorry then."

Needle Tree was sad for a while... Zhou Wen could feel its sadness, a very obscure plant language.

Then the oldest needle tree told Zhou Wen that there was a lot of arsenic under its feet.

Zhou Wen thanked it, and then returned.

Before the sun went down, they went out of the dense forest.

Zhou Wen used a biological antidote to detoxify two people who had been poisoned by arsenic.

"Because this is heavy metal poisoning, it needs a recovery period, about 6 to 10 days."

The black young man moved his palm and said happily: "I feel better."

Zhou Wen nodded and handed a business card over, "That's good! This is my business card. If you have any problems looking back, just call me."

Of course, there is a reason why Zhou Wen is so enthusiastic.

The first is the super-enriched arsenic needle tree, which is very rare, and the root system is so developed, whether it is used to treat heavy metal pollution or to extract underground arsenic mines, it can be called a "money cow."

The second is the underground arsenic mine.

Arsenic is very valuable. The market price of 6N is around 1,000 yuan/kg, and the market price of 7N has reached around 2,000 yuan/kg.

Of course, this is also very harmful to the environment, and if it is developed, the investment is also huge.

But finally it is also good news.

Because of this, it is necessary to establish a good relationship with these locals in advance to facilitate some subsequent operations.

After eating a special local dinner, Zhou Wen and the others rushed to a hotel in the city to rest overnight.

...

...

At nine o'clock the next morning.

Lin Gaoxuan waited all afternoon and one night, Zhou Wen didn't take the initiative to come over, but Tang Wannian's call came.

"Okay, I see..."

Lin Gaoxuan hung up the phone with a black face.

The next moment, a head was drilled from the air conditioner. It was Shen Yujie, with a peach blossom face and a curvy hair on the corner of his mouth. Mei smiled and asked, "How about it, is he coming?"

Lin Gaoxuan said with a deep hatred, "This bastard, after spending two months in a foreign country, has been so bad that he won't listen to anyone."

Shen Yujie asked, "What should I do?"

Lin Gaoxuan's expression was uncertain for a while, and finally realized that there was no way to use the other party for the time being except for making a phone call.

"Let him be proud of it for a while, and wait until I return to China to see how I can deal with him!" Lin Gaoxuan pushed Shen Yujie's head into the bed and took out the phone and dialed a number.

The call was soon connected, and Zhou Wen’s voice came from UU reading www.uukanshu.com, "Hello, hello, who?"

Lin Gaoxuan sneered and said, "Dr. Zhou is really busy, so many people can't ask you to please, but I want to call you personally. You are very good."

Zhou Wen: "Who are you?"

Lin Gaoxuan felt that he was just talking about it. It's impossible for the other party to not know who he is. It was clearly intentional and coldly said, "You really don't know who I am?"

Zhou Wen: "Nonsense~ If you don't talk, how do I know who you are?"

Lin Gaoxuan: "...I am Lin Gaoxuan."

Zhou Wen: "I don't know! You made a mistake."

"Dududu..."

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