After thinking about it, Fang Tian turned into a mover.

The task, of course, is to come up with some way to purify the salts of these samples.

This thing is actually not difficult, as long as someone guides you, in your previous life, even those elementary school students, you can do it.

As a third-rate gourmet, and a tenth-rate chemical ...... Well, this can't be called a "home", it can only be said that he is a tenth-rate junior learner of chemistry, Fang Tian is still barely competent to engage in this thing.

At least, it's a little higher than that of an elementary school student, well, it's a middle school student.

Fang Tian, a middle school student, carefully looked at the five samples in front of him.

Changing to a master, he didn't even need to look at the appearance of the sample, just by looking at the geography around the salt lake, he could almost make a basic judgment on the composition of its salt production, just like in terms of cultivation, Fang Tian only needed to look at it to make a basic judgment on the cultivators below his rank.

And this basic judgment is not far from ten.

But at the moment, in this real yàn, Fang Tian can only honestly use all kinds of means.

Seeing with the eyes, tasting with the tongue, and judging by the relevant knowledge of the previous life, these three add up to the same. After all, there are only a few possible components of natural mineral salts.

Fang Tian first moved his gaze to one of the salt blocks.

The salt lake to which this salt block belongs is the closest to Redstone Town, and naturally, the salt used daily in Redstone Town is also the salt of this salt lake.

Master the saltwater town of this salt lake, huh. It's a straightforward name, but the reason why it hasn't developed into a small city like Black Wind City, Xiaoye City, and Sanhe City is just because the salt water of this salt lake is very light. It doesn't produce much salt, and the salt produced is of the worst quality!

But looking at this sample, Fang Tian sighed.

He knew that the salt from this salt lake only needed to be filtered to get almost the purest NaCl.

Other words. This salt lake, which is considered the worst by the natives, is in fact probably the best of the best.

Of course. Further comparisons are needed.

However, Fang Tian already had almost the bottom in his heart.

Then there was the second sample, Fang Tian looked at it first and then tasted it, and almost after tasting it, Fang Tian couldn't help but sigh again. At the same time. Xi Yan's words echoed in his ears: "Your Highness, this salt lake in Donghu Town is similar to the salt lake in Yanshui Town, although its salt production is not low, but the salt produced is not salty. ”

Hearing this, Fang Tian had a judgment in his heart at that time, and now that he took a look at it so practically, it would be considered a certainty.

Past. On Earth, the content of elements in the earth's crust is as follows: oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium.

This life. After all, the environment was different, and Fang Tian didn't dare to rashly conclude that the crustal element content of this earth was the same as that of the earth in the previous life, but it was still certain that it was generally similar.

Well, "roughly similar".

Whether from the perspective of the actual situation of the land, animals and plants, or from the theoretical birth of the universe -- there is no reason why things made from the same template are too different, and no matter how vast the universe is, it will not be so extravagant as to build a small solar system and change the mold, right?

Aluminum, iron, calcium, sodium, potassium, magnesium.

The first two can be ignored directly, and the third can also be largely ignored, and here, it is the latter three that need to be considered, that is, sodium, potassium, and magnesium.

What is the same thing as NaCl but not very salty?

There is only one answer, and that is KCl.

Potassium (K) has the same effect on the human body as sodium (Na), and there is no more important statement, anyway, all of them are indispensable.

Bananas are potassium-rich foods, in previous lives, many people ate bananas to supplement potassium, and many people with high blood pressure prefer low-sodium salt (in addition to normal NaCl, there are about 1/3 to 1/4 of KCl).

This is a low-sodium salt lake, which does not even use artificial proportions, natural "nutrient salt" and "health salt".

In the previous life, nine times out of ten, this is another salt lake that can be classified as high-quality, and in the current world, it is obvious that this salt lake is also despised. Just like in the previous life, truffles were only used by the Yunnan people to feed pigs at first.

The value of things varies from time to time, from place to place, and from person to person. It is possible and normal to be cheap at that time and expensive at this time, to be expensive at that time and to be cheap here, this person's treasures, and the abandonment of others.

The nobility of people......

It's pretty much the same.

Fang Tian only sighed slightly, then reached out and picked up the next sample, then divided a little and put it on the tip of his tongue.

Then the whole person is like being electrified, scorched on the outside and tender on the inside!

Okay, that may seem like an exaggeration, but it's not really too much. Although Fang Tian's current tongue is not as powerful as his nose, it is also extremely sensitive, and this salt ......

Nima, that's called a rich taste, sweet and sour, bitter and salty, it's just completely together, and in addition, there is a "astringency", very, very astringent!

This kind of salt is also something that people can eat? Are you not afraid to eat and eat, and rise to the ground?

Well, for the locals, the salt from Salt Water Town, which is the usual salt used in the Maple Grove compound, is probably slightly better than this salt. Salt, it's not rice, how much to eat at a time, put a little more, eat and eat, people probably get used to it.

But Fang Tian was not used to it.

I snorted several times, and then quickly rinsed with water, barely allowing my tongue to recover from its numbness. Hey, Shennong is not so easy to be, if it weren't for judging this salt, he wouldn't have made such a real amount of salt just now.

At the same time, Fang Tian's expression was also a little more solemn.

This salt is poisonous!

It is not only bitter, nor is it just astringent, it is real, and it has a certain degree of harm to the body. Although the amplitude is small, it can even be said to be very slight, but toxic is poisonous.

And what could this toxic substance be?

dissolved in water, there may be large-scale storage in lakes and seas......

Almost immediately, Fang Tian thought of something, nitric acid, specifically, sodium nitrate, or potassium nitrate, something that had been used to make black powder in his previous life......

This section of the Carado Mountains, or the nearby veins, contains large amounts of sodium and potassium nitrate.

This was the first thought that flashed through Fang Tian's consciousness, and that second thought was, with the current material conditions, could this salt water be purified?

Judgment is judgment, Fang Tian still has to test it.

For Fang Tian now, he doesn't even need to flick his fingers or anything, but as soon as his mind moves, it is completed, and then, taste it again, well, taste!

This time, Fang Tian closed his eyes before tasting it. ――

I was really frightened by the smell just now, and I made a shadow.

Filtration is still useful, a great effect, obviously, all kinds of impurities have been removed a lot, but the most critical role, has not played. In other words, for things that can also be dissolved in water, this kind of shallow technical means to slag is helpless.

So, depending on the melting point, the separation is carried out by heating and condensation?

Okay, huh?

Fang Tian felt hanging. (To be continued......)