Can you drink thousands of boiling water, and why can t you drink thousands of boiling water?

Roll the water forward. There is no clear definition of a thousand boiling water for the time being. We divide it into two categories.

One is water that has been boiling many times and the other is water that is constantly boiling.

Many people have heard that "you can't drink water that has been boiled repeatedly". This so-called "boiled water" has been accused of excessive nitrites, causing cancer and causing a lack of oxygen to the body.

It is true that tap water contains nitrates, and repeated boiling can also cause some nitrates to be converted to nitrite due to high temperature and lack of oxygen.

But! In terms of dose, toxicity is a hooligan!

The nitrite content in tap water is;; After boiling once, the nitrite is;; After boiling 20 times, the nitrite is only mg L, which is far below the national drinking water standard, so there is no need to worry about nitrite poisoning.

Dad's Evaluation" once did an experiment that measured the water that was boiled many times and the water that was boiled all the time. The conclusion is that there is a slight increase in both methods, but this little increase is only small and less, so you really don't have to worry.

In fact, nitrite is not as terrible as everyone thinks. It is a legal food additive, which can protect color and prevent corrosion. As long as it is within a reasonable dosage range, its harm to the human body is not so terrible.

Instead of worrying about boiling water, it is better to eat less food made with cooking methods such as smoking, roasting, and roasting.

So boiling water can be drunk! Rest assured

So what kind of water is a thousand boiling water? That is, it is boiled repeatedly, or rather. Water that has been boiling for a long time.

There are rumors about the boiling water, the boiling water cannot be drunk, the reason is that the nitrite content in the boiling water exceeds the standard. Is there any truth to the claim that regular consumption can cause poisoning and even cancer? In fact, nitrite and nitrate are ubiquitous compounds in nature, nitrite itself is not a carcinogen, but in the environment such as stomach acid, nitrite and food.

Some of the elements in the stomach combine to form strong carcinogens. nitrosamines, which are recognized worldwide as carcinogens.

First of all, Chinese residents generally have the habit of drinking hot water, and the water is in a hypoxic and high-temperature environment in the process of heating and boiling. It will accelerate the conversion of nitrate to nitrite in water. Some researchers have shown through scientific experiments that the more times the tap water of standard water is boiled, the higher the nitrite content, especially after boiling for 3 times, the nitrite content increases significantly.

Therefore, we recommend drinking boiling water and boiling it no more than 3 times. The researchers also found that nitrite levels in tap water increased gradually one hour after boiling, two hours after boiling, and overnight, especially nitrite after overnight. The increase in salt content is more pronounced.

Therefore, it is recommended that the boiled tap water should not be left for too long, and should be drunk as soon as possible after boiling.

Here, we emphasize that shortening the heating time in daily life and avoiding repeated boiling of drinking water are still feasible measures to reduce the harm of nitrite. The second is that in addition to the number and time of boiling, the nitrite content in the water is more related to the quality of the water itself.

For example, the drinking water in individual rural areas may be more nitrogen-containing than that of poultry, manure and nitrogen-content, and industrial pollution, and urban drinking water may also be polluted by improper garbage disposal.

Therefore, the nitrite content of water that does not meet the sanitary standards for drinking water may be higher. Therefore, it is recommended to install a water purification device or choose a reputable assembly water with a good brand. Although the nitrite content in the water I drink every day is very high.

For the time being, it will not cause great harm to the body, but it will suffer over time. Therefore, we must take precautions, prevent problems before they happen, and try not to drink thousands of boiling water.

It is okay to boil water twice to drink, and from a health point of view, it is okay to boil water twice to drink. When we talk about 1,000 boiling water, we don't mean boiling water for the second time, or boiling water repeatedly. Such water will cause a large amount of mineral residues to remain in the remaining water, the concentration is very high, and the risk of internal organs and stones will increase after application.

It should be no problem, who can drink it as long as it is not dirty? Because boiling water does not destroy the ions in the water, it can be drunk.

Because drinking thousands of boiling water is easy to be poisoned.

In some places, the mineral content of tap water itself is relatively high, the water is boiled for a long time, after the water vapor evaporates, the mineral elements in the water are concentrated, for example, the lead content of tap water itself is qualified, after a long time of burning, the water is concentrated, and the tap water is not qualified.

Tap water is disinfected with chlorine, some organic pollutants in the water, once combined with chlorine, it will form a disinfection by-product, belonging to class A carcinogens, the longer the burning, the higher the amount of disinfection by-products. In the past, the common people said that the steamer water could not be drunk, and if it was drunk, it would be poisonous, and the steamer water was repeatedly burned, which is what it meant.

Thousands of boiling water, that is, water that has been boiled repeatedly, because the nitrite content in the water will increase, so drinking such water can lead to nitrite poisoning and even cancer.

Knowledge Expansion:

The safety of drinking water is mainly affected by nitrite and chlorine in the water.

Waterworks are disinfected with chlorine. Residual chlorine in water reacts with organic matter in the water to form harmful compounds such as trihalomethanes (THMS). The easiest way to deal with THMS in drinking water is to heat it, which is very effective in reducing THMS in water.

When drinking water is heated, nitrate in the water is converted into nitrite ions. After the water is boiled and boiled for a period of time, the nitrate concentration of the sub-coarse shed will increase. Therefore, repeatedly boiled water contains a relatively high nitrite content.

It's water that has been boiling on a fire for a night or a long time, and electric heat.

Medium and repeatedly boiled water. Due to boiling for too long, the water does not contain volatile substances such as calcium, magnesium and other heavy metal components.

The salt content is high. Drinking this water for a long time will interfere with people's gastrointestinal function, causing temporary diarrhea and bloating; Poisonous.

Salt can also make the hemoglobin in the blood lose its oxygen-carrying function, causing hypoxia in the body, making the lips, nails, ** bruised, dizziness, headache, palpitation, chest tightness, nausea, vomiting, abdominal pain, diarrhea, coma and convulsions in severe cases, and even death.

Nitrite.

A while ago, there was a lot of uproar, and this time it has come a few more times.

incident, it is no wonder that everyone has been talking about "Asian" color change recently. In this regard, we have made this report, hoping that it will be helpful in preventing "Asia."

Common in life.

Salt has nano2 and kno2, which is white or yellowish crystals (or granular powder), slightly salty and astringent, soluble in water, and very similar to table salt, so it is called industrial salt.

Nitrite is.

After entering the bloodstream, it will be red with blood.

Make it become. As a result, hemoglobin loses its oxygen-carrying capacity, resulting in tissue hypoxia, and has a dilating effect on peripheral blood vessels, and oral nitrite can occur within 10 minutes to 3 hours, headache, dizziness, fatigue, chest tightness, shortness of breath, palpitations, nausea, vomiting, abdominal pain, diarrhea, whole body **, mucous membranes.

and other symptoms. Occurs in severe cases.

Coma, respiratory failure, and even death. After poisoning, vomiting should be induced as soon as possible, and catharsis should be taken together.

Methylene blue (vitamin C, a certain amount of fresh blood can be transfused in critically ill patients, and hypotensive shock can be treated and corrected in a timely manner.

Oxygen and other symptomatic treatments. The harm of nitrite is not only poisoning, it also has a carcinogenic effect. Nitrite can be formed by interacting with secondary amines in food or in the stomach.

Can cause cancer. Therefore, we should eat more garlic (inclusive.

Tea (containing tea polyphenols) as well as foods rich in vitamin C, which can protect the stomach.

or inhibit the carcinogenic mutation of nitrite amine.

The harm is the most insidious and the most widespread, so how did the "thousand boiling water" come about? It turns out that the water originally contains small amounts of nitrate and nitrite. Nitrate is an ionic compound (genus), which is relatively stable. Therefore, it is reasonable to say that nitrate is relatively stable, but because nitrate is made up of reactive ones.

N and O are composed, and nitrate is unstable, so nitrate is chemically reactive.

Anhydrous nitrate of group a can be decomposed into nitrite and oxygen when heated, such as: 2nano3 2nano2+o2, so in the process of boiling water, nitrate continues to decompose, coupled with the continuous evaporation of water, it leads to the continuous rise of nitrite concentration - this is "thousand boiling water", "thousand boiling water" nitrite content is very high, therefore, long-term drinking, is likely to cause cancer.

You can drink it, and the fact that the water contains a lot of nitrite and is harmful to the human body has been confirmed to be nothing more than some rumors of half a tank of water. The rumors have been refuted. Those fake experts are just copying a paragraph on the Internet to tell you the incorrect answer. Give you a link to see the official test results for yourself.

Generally not edible.

A thousand boiling water is water that has been boiled on a stove overnight or for a long time, and water that has been boiled repeatedly in an electric water heater. It is generally believed that this kind of water is boiled for too long, and the water has a high content of non-volatile substances, such as calcium, magnesium and nitrite. Drinking this water for a long time, the harmful substances in the water will interfere with the gastrointestinal function of the person, and temporary diarrhea and bloating will occur; Toxic nitrite can also cause hypoxia in the body, and in severe cases, coma, convulsions, and even death.

This water is generally inedible and can only be used for the extraction of harmful substances in the water.