Bottled water also has a common "boiling water" problem. If bottled water is heated repeatedly in the water dispenser, it will form "boiled water", which looks very clean, but it is actually a concentrated solution of harmful substances such as heavy metals and arsenic compounds.
The so-called boiled water is the water that has been boiled for a night or a long time, and the water repeatedly boiled by the electric water heater. Because this kind of water takes a long time to boil, the content of heavy metals such as calcium and copper and nonvolatile substances such as nitrite in the water is high. Drinking this water for a long time will interfere with people's gastrointestinal function and cause temporary diarrhea and bloating.
Precautions for buying bottled water?
1. When ordering bottled water, you should choose a point of sale with complete licenses and good sanitary conditions. If you buy a brand of water for a long time or in large quantities, you should check with the manufacturer to see if it is the authorized sales point of the manufacturer.
2. Pay attention to the quality of bottled water. Buy bottled water with complete food hygiene license and inspection certificate. In addition, it can also be distinguished from the perception that high-quality pure water is clean, colorless and transparent, without suspended matter and sediment, sticky and tasteless.
Consumers should carefully distinguish the sealing condition of bottled water. The heat-shrinkable film of inferior water seal is generally thin, dull, uneven and loose, while real water is the opposite; The real lid has a circle of arc indentation tearing, which is easy to tear along the line, while the fake lid is dark, which is difficult to tear or not at all.
Refer to the above? People's Daily Online-Five Points for Attention in Buying Bottled Water
Refer to the above? Baidu encyclopedia-barreled water