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Everyone knows that drinking more boiled water in daily life is good for health, but how to boil water and how to drink boiled water are still a lot of attention. Boiling water can kill bacteria and remove substances harmful to the human body, because tap water is chlorinated, and chlorine interacts with residual organic matter in the water to form toxic carcinogenic compounds such as halogenated hydrocarbons and chloroform. When the water temperature reaches 90, the content of halogenated hydrocarbons rises to 191 micrograms, and chloroform rises to 177 micrograms, both exceeding the national standard by 2 times. When the water temperature reached 100, the levels of halogenated hydrocarbons and chloroform were 110 micrograms and 99 micrograms per liter, respectively. If you continue to boil for 3 minutes, the two substances quickly drop to micrograms and micrograms per liter, respectively, to meet the drinking standard.
Therefore, it is best to boil water for about 3 minutes. In order to save water, some people often reheat the leftover boiled water, which is a bad habit. Because repeated boiling of water will cause the aging of water, it will not only cause the loss of minerals that are beneficial to the human body, but also may produce some harmful substances such as nitrite.
Once nitrite enters the human body in large quantities, it can make the red blood cells in the blood lose the function of carrying oxygen, resulting in tissue hypoxia, people will drink this water for a long time will cause nausea, vomiting, headache, nails and lips purple, palpitation and other symptoms, serious can also cause hypoxia, and may even induce cancer. After getting up in the morning, drink a cup of cold and white, which is good for health. Many people like to dry a glass of boiling water the night before and drink it again the next morning.
This is okay when the temperature is not high; For example, in summer, when the temperature exceeds 30 degrees Celsius, the air humidity is high, and the bacteria multiply quickly, the cold boiled water overnight will lose its biological activity, and it is very easy to be contaminated and cause diarrhea. You can pour half a small cup of boiled water the night before, then cover the lid, and mix the boiling water with warm water the next morning. In addition, the time of cooling and boiling should not be too long, and the boiling water boiled on the same day is best drunk on the same day.
It is best not to drink it again if it is left cool for more than 3 days.
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Of course, you can drink it, because the freshly boiled boiled boiled water is conducive to the volatilization of residual chlorine and the precipitation of solid substances such as calcium in the process of natural cooling, so that the water quality is properly softened, and the experiment shows that after the boiled water is placed in the air for 16 hours, the number of E. coli detected in it will seriously exceed the standard, and it will no longer meet the current national drinking water standards, so the boiled water boiled in the morning will be dried until the evening, and it can still be drunk during this time.
In the same way, if the lid is not covered when the water is dried the night before, the glass of water will become a breeding ground for bacteria to multiply, and it will naturally not be drinkable.
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Yes, but don't boil it again, boiled water should not be drunk after more than three days.
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. When the boiling water in a thermos warms up, bacteria multiply faster and reduce more nitrite.
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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.
2. Overnight boiled water is carcinogenic. Actually, it's all wrong. Overnight boiled water contains a certain amount of bacteria, but not a lot, and drinking cold boiled water has many benefits for the body, there is no guarantee that there are no bacteria in the water, but it is a question of how much overnight boiled water can be drunk.
Some people think that boiled water cannot be drunk overnight for two reasons: first, a large number of bacteria are present in it. 2. Overnight boiled water is carcinogenic.
Actually, it's all wrong. Overnight boiled water contains a certain amount of bacteria, but not a lot, and drinking cold boiled water has many benefits for the body, and there is no guarantee that there are no bacteria in the water, just a matter of how much.
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If you want to drink hot water, you can heat it, but be careful not to drink the water alkali, to pour out the precipitated water alkali, if there is a condition, make a pot of boiling water every morning, come back at night and pour the water above into the cool cup, pour the precipitated scale out, drink the cool white water every day, the minerals in the cool white boil are very rich, there are trace elements needed by the human body, in short, boiled water boiled in the morning can be drunk at night!
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Boiled water boiled in the morning, of course you can drink it in the evening, the boiled water in the past, put it in a thermos can be kept for several days to drink, so you should be able to drink it, don't worry about this kind of problem, people sometimes live too particular about it will be very tired, but if it is tea water, don't drink it if you can stay overnight, boiled water is no problem, rest assured to drink it!
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The process of boiling water is essentially the process of disinfection and sterilization, the bacterial content of boiled water is close to zero, and the pH value of the boiled water boiled in the morning has no significant change in the pH value of the water in the evening, so it can be drunk normally.
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Boiled water boiled in the morning can be drunk in the evening when it is cold.
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You can drink it, the boiled water boiled in the morning, it is cool and white boiled in the evening, compared to the general raw water, it is more healthy and hygienic, and now the weather is hot, it is completely drinkable.
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Can I still drink boiled boiled water in the morning and it gets cold in the evening? Boiled water boiled in the morning, you can drink it at night, boiled water is cooled is what we commonly call cool white boiled, I think it is best not to drink boiled water overnight.
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Yes, don't drink water for more than a week, it will be poisonous, and boil it repeatedly to cool it, and try to drink as little as possible.
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You can drink boiled water in the morning and at night, and you can let it cool down in the summer when it's hot.
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Boiled water boiled in the morning can still be drunk in the evening, and boiled water can be drunk at night if it is not bad for a day.
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You can't drink cold boiled water if you leave it for more than three days. If the water is cooled for three days, a large amount of nitrite will be generated in the water, which will form nitrite with amines, which has a great impact on health and can cause cancer.
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If it is kept in a clean and cool place, there is nothing unclean, the taste has not changed, and the color has not changed, you can drink it.
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Of course, you can drink it, and the water on the same day, as long as it is clean, is completely drinkable.
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Plain water is not exposed to the air and can be drunk.
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It's normal, you can drink it.
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There should be no problem, drinking more plain water is good for the body.
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It is drinkable in the summer.
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It can be drunk on a cool day in summer, and drinking cold boiled water in summer is more nutritious and hygienic than cold water.
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01 First of all, you can't drink cold boiled water in the morning, because drinking cold boiled water in the morning is easy to hurt yang qi. Many people have the habit of drinking cold boiled water in the morning, but it is so easy to develop rhinitis and even cause hair loss for a long time.
02 Although cool boiled water is good for the human body, drinking it at the wrong time will harm human health. You can't drink cold boiled water when you eat at noon, and drinking cold boiled water when you eat can easily lead to stomach problems.
03 In addition to the time when the dining hall is ruined, there is another time when it is not suitable to drink cold boiled water, that is, just after exercising, if you drink a glass of cold boiled water directly after exercise, it may cause abdominal pain and damage your health.
04 There is another time that many people don't know, that pretending to be pure is in the middle of the night, getting up in the middle of the night to drink cold boiled water, in fact, drinking "poisonous water", drinking cold boiled water at this time is easy to cause a relatively large burden on the kidneys.
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It is not recommended to drink cold water after three days or more. If you leave it for too long, it may breed more bacteria, and it is no problem to drink a small amount, if you drink such water for a long time, it is not good for the human body, and it is not recommended to drink it again. It is advisable to drink fresh, boiled water and not water that has been left out for too long.
The shelf life of boiled water in the air is only 16 hours, and once the shelf life is exceeded, the E. coli contained in the water will exceed the standard and be destroyed.
Because when boiled water is placed in the air, the water surface will be contaminated and invaded by the bacteria flowing in the air.
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The cool white old shed is boiled for 30 hours and cannot be drunk. The humidity in the air is relatively high, the bacteria multiply faster, the inactive boiled water is easy to cause pollution overnight, and the longer it is placed, the nitrite in the water will be higher, and drinking this water will affect the body, so it can not be drunk after 30 hours of cool white. <
Cool boiled water can be drunk for 30 hours. The humidity in the air is relatively high, the bacteria multiply relatively quickly, the inactive boiled water is easy to cause pollution overnight, and the longer it is placed, the nitrite in the water will be higher, drinking this water will affect the body, so it can not be drunk after 30 hours of cool white.
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If there is pollution, it is not recommended to drink cool boiled water no matter how long it is placed; On the premise that the water is not polluted and has no peculiar smell, it is not recommended to drink cool boiled water for 3 days.
In the process of placing hot water to become cool, there may be bacteria breeding, especially in summer, the temperature is relatively high, bacteria and other microorganisms multiply faster, if it is placed for too long, the cool boiled water may deteriorate, and drinking it when there are more bacteria may damage human health, if it is a water cup without a lid, dust and other substances in the air may also fall into the water cup. Some people with gastrointestinal diseases or sensitive stomachs, such as children and the elderly, are prone to abdominal pain, diarrhea and other symptoms after drinking water that has been left for too long. If you want to drink cool boiled water overnight, it is recommended to close the lid of the cup to avoid water pollution.
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It is not recommended to drink cold boiled water for more than 3 days. Because the sparrow will produce nitrite after being heated and cooled, and the amine will react to form nitrite, which is not conducive to human health, and the longer it is placed, the more the content, if it is drunk is harmful to human health.
Under normal circumstances, most people think that overnight water is not drinkable, but in fact, the nitrite content in cold boiled water does not change significantly for 24 hours, and it is usually drinkable normally. However, if there is an odor or contamination with foreign matter, it is not recommended to drink it.
Cool boiled water is easy to breed bacteria if left for too long, try to drink it within two days of burial, and at the same time, the kettle should also be cleaned on time to prevent the accumulation of scale.
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It is not recommended to drink cold boiled water for more than 3 days. Because the water will produce nitrite after being heated and cooled, and the amine will react to form nitrite, which is not conducive to human health, and the longer it is placed, the more the content, if it is drunk is harmful to human health.
In general, most people think that overnight water is not drinkable, but in fact, the nitrite content of cold boiled water does not change significantly between 24 hours, and it is usually drinkable normally. However, if there is an odor or contamination with foreign matter, it is not recommended to drink it.
Cool boiled water is easy to breed bacteria if left for too long, try to drink it within two days, and at the same time, the kettle should also be cleaned on time to prevent the accumulation of scale.
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1. After the water is boiled at high temperature, it can kill harmful substances such as bacteria and microorganisms in the tap water, and under normal circumstances, drinking such boiled water is harmless to human health. Although the cold boiled water has been sterilized at high temperature, due to the limitations of the environment and storage methods, the bacteria in the air come into contact with the water for a long time, and it is easy to breed harmful bacteria to people, so the cold boiled water can not be drunk for a long time.
2. Cool boiled water will deteriorate for a long time and is no longer suitable for drinking, in fact, there is no fixed time, because whether cold boiled water can be largely limited by the influence of the objective environment. If it is in a general home environment, cool boiled water can be stored in a clean and closed container for about 3 days at most, and the water for more than 3 days will basically be contaminated and cannot be drunk.
3. In summer, it is best not to drink cold boiled water overnight, because the temperature is high in summer, the air humidity is high, the water environment itself is very suitable for the growth and reproduction of bacteria, and the family storage conditions are poor, so from a health point of view, it is better not to drink the cool boiled water overnight.
4. The cold boiled water that has not been drunk can not be heated and drunk again, especially the "back to the pot water" that has been boiled many times is not suitable for drinking, because some trace components contained in these boiled water after repeated boiling are increased, especially the nitrite solution increases. Drinking this water has a potential chronic harm to health.
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