Repeatedly boiled water can drink repeatedly boiled water can not drink

April 22, 2023
Many people have the idea that repeatedly boiled water is not good, and even many people will be the first boil did not drink the water dumped, re-boil a pot, then repeatedly boiled water can not drink it?

Repeatedly boiled water can not drink

Repeatedly boiled water can drink. Repeatedly boiled water is called a thousand rolling water, but there is no case of drinking a thousand rolling water caused by disease, and a variety of old fire soup is also repeatedly boiled, people consumed and will not produce discomfort after the impact. So repeatedly boiled water is also drinkable.

Repeatedly boiled water can not drink the reason

The reason why you can't drink repeatedly boiled water comes from nitrite carcinogenic said. Because the tap water contains nitrate, after repeated boiling, part of the nitrate will be converted into nitrite, and nitrite is carcinogenic. But leave the dose of toxicity is meaningless, nitrite content is not enough to cause disease, we can think of repeatedly boiled water is drinkable.

Changes in substances after repeated boiling of water

According to experimental data, the content of nitrite in tap water is 0.007 mg / L, after boiling once, nitrite is 0.021 mg / L, after boiling 20 times, nitrite is 0.038 mg / L. After repeated boiling, the content of nitrite in water is still far below the national standard for drinking water (≤ 1 mg / L), there is no need to worry about drinking repeatedly boiled water nitrite poisoning or carcinogenic problems.

Is it good to drink repeatedly boiled water?

Under normal circumstances, of course, it is good to drink only once boiled water, but if the remaining water in the pot more, the second heating drink will not have an uncomfortable impact on the human body, and boiled water can also be used to make soup, or let cool after washing vegetables, dishes, etc., in short, do not waste water resources.
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