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Overnight boiled water contains nitrite Nitrite can form carcinogenic nitrosamines in the human body. Some experts have found that the nitrite content in boiled water is higher than that in raw water. Moreover, the nitrite content of boiling water that has been boiled for too long or more than 24 hours has been boiled for many times.
After 24 hours of boiling water, the nitrite content is twice that of the first boil. Chinese residents have the habit of drinking boiled water, and it is best to drink it freshly or only drink the boiled water of the day. Also do not drink boiled water that has been boiled for too long Overnight boiled water contains nitrite Nitrite can form carcinogenic nitrosamines in the human body.
Some experts have found that the nitrite content in boiled water is higher than that in raw water. Moreover, the nitrite content of boiling water that has been boiled for too long or more than 24 hours has been boiled for many times. After 24 hours of boiling water, the nitrite content is twice that of the first boil.
Chinese residents have the habit of drinking boiled water, and it is best to drink it freshly or only drink the boiled water of the day. Also do not drink boiled water that has been boiled for too long.
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You can drink it overnight after boiling the water, but if you leave it for too long, you can't drink it. Unlike tea, you can't drink it.
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You can't drink it, even if you boil it again, don't boil the water again, otherwise it will be harmful to the body.
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OK.
Repeatedly boiled water can be drunk, and the nitrite in the water is not produced out of thin air, and is generally converted from the nitrate in the water. There is very little nitrate in qualified drinking water; However, if the water source is contaminated with nitrogenous organic matter, nitrate levels may increase.
Generally speaking, the reason for the increase of nitrite caused by repeated heating of drinking water is mainly the increase of nitrite concentration due to water evaporation and concentration, but the total amount does not increase; Another possibility is that some nitrates are heatedly broken down into nitrites. China's sanitary standards for bottled water stipulate that the nitrite content in water shall not exceed 2 micrograms per liter.
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Overnight boiled water can be drunk, boiled water is a very pure substance, even if it is left overnight, as long as it is stored properly, there is no problem, but the kind of boiled water that is reboiled overnight is best not to drink.
Although there are no toxic substances in the boiling water itself, after repeated boiling, some components in the air will also be integrated into the water, so that the water quality may change, and some bad things may also be formed in the process. Therefore, in order to be sure, do not drink boiled water that has been boiled repeatedly.
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Can you still drink boiled water overnight? Tell everyone and don't take it seriously.
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Can I drink boiled water overnight? I also found out today, and I told my family after reading it.
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It is best not to drink overnight boiled water and boiled water that has been boiled repeatedly, because it is rich in nitrite and can easily cause cell cancer.
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No, boiled water contains nitrites, which are harmful to humans.
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1. It is completely drinkable to boil the boiling water overnight again.
2. Boiling water overnight will not be toxic and will not lose minerals.
3. If the boiled water is stored for more than 3 days, it will be infected by bacteria and produce nitrite, so don't drink it.
4. In addition, repeated boiling of water will cause the aging of water, the loss of minerals beneficial to the human body, and the production of nitrite.
5. Once nitrite enters the human body in large quantities, it can make tissues hypoxic, cause nausea, vomiting, headache, palpitation and other symptoms, and in severe cases, it can also cause people to die of hypoxia.
6. Therefore, boiling water is best boiled with use, and boiling water that has been stored for a long time should be used for washing.
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It's best not to drink it, and it's good to boil the water once.
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Many people think that overnight water cannot be drunk, and many people think that it can be drunk, but can it be drunk or not?
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It is also drinkable to boil water overnight, there may be more impurities in it, there are no pollutants in the water, and drinking such water does not have much effect on health.
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Why do you have to boil overnight water when boiling a kettle of water?
Overnight water is not undrinkable, but the taste is definitely not good.
You can try which one is better to make tea with overnight water or fresh water.
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Once the water is stored for too long, it will be infected by bacteria to produce nitrite, once nitrite enters the human body in large quantities, it can make the tissues hypoxic, nausea, vomiting, headache, palpitation and other symptoms, and in serious cases, it can also make people die of hypoxia. Nitrite can also form nitrosamines in the human body, which can promote liver cancer and stomach cancer. Of course, these are extreme situations and generally do not appear, but for the sake of health, try not to drink overnight water.
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I can drink it, but it's not good for a body.
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Yes, boiling the water in the water dispenser overnight is not the same as drinking.
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It is best not to drink boiled water overnight. Overnight boiled water is prone to carcinogens.
Here's an excerpt for reference:
4. Boil water overnight Boil tap water for 3 5 minutes, the content of harmful substances such as nitrite and chloride is the lowest, and it is most suitable for people to drink.
Drink less overnight hail water: nitrite can form carcinogenic nitrosamines in the human body. Some experts have found that the nitrite content in boiled water is higher than that in raw water.
Moreover, the content of nitrite in boiling water that has been boiled for too long or more than 24 hours has been boiled for many times. After 24 hours of boiling water, the lead content of nitrite solution is twice that of the first boiling. Chinese residents have the habit of drinking boiled water, it is best to drink it freshly or only drink the boiled water of the day, and do not drink boiled water that has been boiled for too long.
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Don't drink boiled water overnight for several days, it's easy to have nitrite for too many days.
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You can drink it, and as long as the overnight water is stored well and is not contaminated by dust, bacteria, etc., it is safe to drink.
Nitrite in water is converted from the original nitrate in the water. In qualified drinking water, the content of nitrate is very low, and under normal circumstances, the amount converted into nitrite will be very small, and a small amount of nitrite will not be poisoning. Poisoning can only be caused when the intake reaches grams, and one or two glasses of overnight water are not enough to reach the dose of poisoning at all.
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The water quality of overnight boiled water** itself meets the safety standards and can be drunk, but overnight tea cannot be drunk.
If there is no material basis in the water overnight, carcinogens will not be born out of thin air. The most feared carcinogen, nitrite, must be produced on the basis of nitrate, but ordinary drinking mineral water or purified water either has only minerals and trace elements, or nothing, and carcinogens will not be born out of thin air in the case of replanting.
As long as the water quality itself can be guaranteed to meet safety standards, no matter how much the water is burned, it will not produce carcinogens. However, overnight tea will produce amino acids and other substances, which can easily lead to the reproduction of microorganisms for a long time, and should not be drunk.
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Don't drink boiled water overnight: Experiments have shown that drinking naturally cooled boiled water that has been left for no more than 6 hours is the most beneficial to human health. If the water is boiled and left for too long, it will become aging water.
Toxic substances in aged water will increase with the increase of storage time.
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If the water is left for too long after boiling, it will become aging water, so don't drink water that has been left for too long.
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Overnight boiling water can be drunk the next day, if the boiled water is left for more than two days, do not drink, but overnight is 8-12 hours is no problem. There is also boiled water after repeated decoction before it can cause cancer, but it must be decocted more than 35 times, which is not possible for ordinary families.
The more the water is heated, the higher its nitrite content becomes, but the increase is small. The data shows that even if the tap water is boiled 20 times, the nitrite content in it is far below the national standard and will not cause harm to the human body. The danger of overnight water is that the microorganisms and bacteria in the water multiply more and more for a long time, just like a basin of water outside, it will deteriorate after a long time, but it is also affected by the storage environment, generally speaking, there is not much problem with overnight for a day.
Overnight boiled water is drinkable. Some people think that boiled water cannot be drunk overnight for two reasons: first, a large number of bacteria are present in it. >>>More
Yes, but not because Coke is not a good thing in the first place.
The nitrite content of repeatedly boiled water is still within the normal range and will not cause harm to the human body.
It's better not to.
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Boiling water that has been boiled for a long time is not drinkable. Because boiling water that has been boiled for a long time or boiled water many times (some people also call this water a thousand boiling water, refers to the water that has been repeatedly heated in the water dispenser or kettle. The nitrite content in it will be higher. >>>More