Is it harmful to boil pure water, and can pure water be boiled several times to be harmless to peopl

Purified water can be boiled and drunk, pure water refers to Ho without impurities, referred to as clean water or pure water, which is pure, clean, and does not contain impurities or bacteria, such as organic pollutants, inorganic salts, any additives and various impurities, and is the raw water that meets the sanitary standards of drinking water. So you can boil it and drink it.

Purified water, referred to as purified water or pure water, is pure, clean, and does not contain impurities or bacteria (H2O), such as organic pollutants, inorganic salts, any additives and various impurities, and is the raw water that meets the sanitary standards for drinking water. The best space water and distilled water on the market are pure water.

In China's bottled drinking water market, there are mainly pure water, mineral water, spring water, natural water, mineral water, etc., due to the resource limitation of mineral water, spring water, etc., and pure water is the use of water in the urban water supply system that meets the national drinking water standards through a certain production process for production.

Therefore, it effectively avoids the invasion of various germs into the human body, can effectively and safely replenish water to the human body, has a strong solubility, and therefore has a strong affinity with human cells, and has the effect of promoting metabolism.

There is no harm. Boiling purified water is a warming process.

Purified water can be boiled once or twice repeatedly and is harmless to people. ButBoiling water that has been heated repeatedly for a long time will convert the nitrate in the water into nitrite. Water containing nitrite combines with dimethylamine and trimethylamine in food under the action of gastric juice to form nitrosamines, which are one of the three major carcinogens.

Therefore, even in the case of sealing, drinking water that has been heated repeatedly is harmful to the human body, and in addition to the growth of bacteria in the already scaled mineral water.

Purified water can be boiled repeatedly, although qualified pure water is filtered through reverse osmosis membrane for many times, the deionization efficiency is extremely high, and the general soluble impurities are also removed, but the actual bottled water contains nitrate.

Principle analysis. Purified water is prepared by electrodialyzer method, ion exchanger method, reverse osmosis method, distillation method and other appropriate processing methods.

Generally, it is sealed in a container, does not contain any additives, is colorless and transparent, and can be drunk directly. The best space water and distilled water on the market are pure water. The term is sometimes used to refer to distilled water or rainwater extracted in chemical laboratories.

Theoretically, pure water can be boiled repeatedly, qualified pure water is filtered through reverse osmosis membrane for many times, deionization efficiency is extremely high, and generally soluble impurities are also removed, but the actual bottled water contains nitrate, boiling water for a long time and repeatedly heating the water, which will convert the nitrate in the water into nitrite. Water containing nitrite combines with dimethylamine and trimethylamine in food under the action of gastric juice to form nitrosamines, which are one of the three major carcinogens.

So even in the case of sealing, drinking water that has been heated repeatedly is harmful to the human body. In addition, it can breed bacteria in mineral water that has already been scaled.

Repeatedly boiling and drinking it is harmful to the body.

1. From the point of view of material content.

Boiled water is tap water that is boiled at 100 degrees Celsius and then cooled to the next side of the water, which destroys a small amount of harmful substances in the process, so that it retains a lot of microorganisms and minerals. Because boiled water is tap water, it is still relatively rich in minerals, so boiled water is the healthiest and safest and can be drunk for a long time.

However, purified water is a kind of drinking water produced by processing through a special filtration device. On the one hand, it filters out some harmful and toxic substances in the water, but on the other hand, it also filters minerals that are beneficial to the human body, and there are fewer trace elements in it. So compared to boiled water and mineral water, purified water is not very good.

2. From the point of view of transportation routes.

Purified water is currently bottled in special barrels and transported in a sealed form. If the special barrel is cleaned and disinfected in strict specifications, the quality of the pure water will not change.

The tap water is delivered through pipelines, one is directly to the end user, and the other is through the high-rise water tank, reservoir and then to the end user's home. If the pipe network is polluted, obsolete, damaged and repaired, or the high-rise water tank and reservoir are not cleaned and disinfected, it will cause secondary pollution to varying degrees.

3. From the point of view of quality standards.

Although tap water and purified water are both drinking water, there is a clear difference in the quality standards set by the state for these two types of water. For example, the content of cyanide in tap water in physical and chemical standards is required, and the requirements are specified for pure water, and the difference between the two requirements is 25 times.

In terms of the total number of colonies in the hygienic index, the standard requires 100 ml for tap water and 20 ml for purified water, which is a difference of 5 times.

4. From the point of view of shelf life.

Plain water is not suitable for drinking after more than 16 hours, but purified water is sealed in a bottle, and the shelf life is generally about 12 months without opening it.

There is no harm in boiling pure water, and it is drinkable. Pure water does not contain impurities, referred to as clean water or pure water, which is pure, clean, does not contain impurities or bacteria, and meets the sanitary standards of drinking water, so it can be boiled and drunk.

After some treatment, the content of bacteria in the purified water itself has been significantly reduced, the health index has been improved, and it has reached the drinking index, so you can drink it with confidence. Boiling pure water further reduces the content of microorganisms and is also beneficial to health, but the human body itself has a certain resistance, and a small amount of bacteria and other foreign harmful substances are basically killed in the process of digestive tract, and there is no threat to health. Purified water that has not been boiled has killed some of the harmful microorganisms than purified water that has not been heated, so there is no health effect except for the difference in taste.