Many people like to wear sterling silver jewelry, but many people find that the silver will turn black after wearing for a while. The folk saying is that silverware can detoxify, is this true?
Why does silverware turn black?
Every day, the human body emits some "toxins". The sterling silver jewelry can absorb these "toxins". This is also the reason why some people wear silver ornaments to turn black. The anti-oxidation and durability of silver ornaments are related to personal physique. People with good physical fitness will wear more and more brighter. If the body is weaker and the body has more toxins, the silverware may soon become black. Therefore, wearing sterling silver jewelry often helps the body toxins. From the above point of view, the health care function of silverware is actually there, but it is not necessarily to exclude toxins.
Another possibility that silver will turn black is because it reacts with sulfides to form black silver sulfide. For example, if there is gas containing sulfide in the air, or silver jewelry is in contact with sweat excrement and sulfides released from egg products, it will be black after a period of time, giving people the illusion of "sucking" the body's wet poison. This is Normal natural phenomenon. After cleaning, the silver jewelry can become bright as new.
We all used the silver needle to test the poison. This kind of scene can always be seen in TV dramas. The poisons referred to by the ancients mainly refer to arsenic, namely arsenic trioxide, which is accompanied by a small amount of sulfur and sulfide. When the sulfur contained in it is in contact with silver, it can react chemically to form a black "silver-silver" on the surface of the silver needle.
Avoid injury to the wound? Choose silver
Silver can form positively charged ions in water, which can adsorb bacteria in water and gradually enter the bacteria, so that its catalyst-enzyme system is closed and inactivated, and the bacteria lose their metabolic ability and die. In the ancient battlefield, after the soldier was injured, he could not find the medicine. He took the silver that he carried with it into silver and covered it on the wound, which not only prevented the wound from infecting, but also accelerated healing. Women wearing silver earrings after wearing ear holes can also avoid inflammation.
Because silver itself is an inactive metal, it does not precipitate at room temperature, and it rarely reacts chemically with human secretions, so it can play a certain role in sterilization.
No cases of skin discomfort due to wearing sterling silver jewelry have been found clinically. When ancient stainless steel needles were not invented in ancient times, the ancients used silver needles as needles for acupuncture. Studies have shown that silver can produce bactericidal and anti-inflammatory effects through different mechanisms.
Preservative preservation? Silver cutlery sticks
Silverware has been widely used as a tableware in ancient Rome, as well as in courts and ethnic minority areas. In addition to the symbol of wealth and nobility, it has been found that silverware has a good antiseptic and fresh-keeping effect. For example, dairy products are degraded in ordinary bowls for a few days, and can be kept in silver bowls for a longer period of time, and can maintain a delicious mellow taste, and the water in the silver bowl is also more clear. Silverware also has a natural bactericidal effect, which can inhibit the growth of bacteria, thereby reducing the occurrence of food spoilage.
However, it should be noted that silver tableware also has the characteristics of fast heat conduction, hot mouth, soft texture, easy to be oxidized, etc. It is inconvenient to use and unaccustomed to use, and should be maintained frequently. And many silver tableware is not pure silver, but the alloy is silver plated. If the alloy material is precipitated, it is easy to cause health hazards.
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