29. Good things need to be cared for, but if they are damaged, the consequences will be serious.

The metal element mercury, the symbol hg, is probably familiar to everyone. The silver-white toxic liquid has strong cohesion and is inactive in chemical properties. It can dissolve many kinds of metals to form liquid or solid alloys. It can be used to make medicines, thermometers, and blood pressure meters. It is commonly known as mercury.

By the way, the main reason for saying it is good is that it is inseparable from medicine. The thermometer and blood pressure meter made from it are essential items for medical staff to measure their body temperature and blood pressure. Because of well-known reasons, such as the SAR virus explosion and the prevalence of many influenza, thermometers are even more well-known to ordinary people.

What I want to say today is that the thermometer is so important, and it is naturally essential to care for it, otherwise it will be very close to the victim. A broken thermometer, the mercury flowing out will steam into various clothes and utensils, breathing into the nose or penetrate into the skin, causing symptoms such as headache, brain heat, abdominal cramps, and difficulty breathing. The respiratory and lung tissues of the poisoned person may be damaged, and in severe cases, they will fail and die. Do you think you should be careful and should you take care of it?

A standard mercury thermometer contains 1 gram of mercury. Don’t underestimate the power of one gram. When all gram of mercury is steamed, the mercury concentration in a room with a height of 15 square meters can reach 22.2 mg/cubic meter. The tolerance of ordinary people to mercury is 1 to 3 mg/cubic meter. After this limit, can you still live healthy?

In addition, turning into mercury vapor into the atmosphere and traveling around the world across the ocean. Once you enter rivers, lakes and forests, it will inevitably affect animals and plants. And the animals and plants that humans rely on for survival are transformed into mercury. What will it be like?

(End of this chapter)
Chapter completed!