1, the correct way to boil water
(1) Open the lid when the water boils.
Nowadays, there are more and more organic pollutants in water, some of which are volatile and will evaporate with water vapor when heated. So open the lid of the kettle when the water is about to boil, so that these substances can volatilize to the maximum extent.
(2) Wait for the water to boil for about 3 minutes before turning off the fire.
This is because the tap water at home has been chlorinated to remove impurities such as microorganisms. But at the same time, chlorine interacts with the residual organic matter in water, which will form some harmful compounds. But if you boil for 3 minutes, the harmful compounds in the water will be reduced, and it will become safe drinking water at this time.
Note: The longer boiled water is, the better, because the longer boiled water is, the more volatile harmful substances and nitrite in water will be concentrated due to the evaporation of water, and the content will be higher. Drinking such water is also harmful to your health.
(3) Water cannot be boiled repeatedly.
Flowing water has a certain self-purification ability, and the most ideal drinking water is fresh water. If water molecules are at rest, they will become aged water. If minors drink it regularly, it will obviously slow down cell metabolism and affect growth and development; Middle-aged and elderly people often drink it, which will accelerate aging. However, the deep well water, which has just been pumped out and is constantly moving, only contains 0.0 17 mg of nitrite per liter.
But if stored at room temperature for 3 days, it will rise to 0.9 14 mg. Water without nitrite will produce 0.0004 mg of nitrite per liter of water if it is stored at room temperature for one day, and it will reach 0.73 mg after 20 days. Therefore, some experts pointed out that it is best to boil water now, and bottled water stored for a long time is not good for health.
2. Pay attention to safety when boiling water.
First, the exhaust is smooth
First of all, we must pay attention to the smooth exhaust, the whole air flow must be good, and our ventilator and other ventilation equipment must be kept in good condition, so that the exhaust can be good and will not cause some urgent smoke problems.
Second, we should use electricity reasonably.
The second point is that in terms of electricity use, we must pay attention to the safe and secure use, all the power strips and all the sockets must be ready, and then we must discharge the pollutants from these power plants. It is necessary to ensure their power-on status in time. If everyone's water is boiling, they should close those valves at once.
Third, prevent burns.
The third person must pay attention to prevent scalding with boiling water. When drinking boiled water, it is best to measure it first to prevent burns. Unplug the power supply and turn off the socket in time after boiling water. So as to ensure its safety.
Fourth, the flue is unobstructed.
In addition, everyone must pay attention to the smoothness of the flue in the process of boiling water to avoid gas poisoning. In fact, there are many gas poisoning phenomena, which are caused by the unsmooth flue. Therefore, mass consumers, all residents, users and so on should pay attention to this problem.