1, from a chemical point of view, silver easily reacts with sulfur to form silver sulfide, which leads to blackening. If you get sick, it will lead to certain changes in human endocrine and accelerate the oxidation of silverware. Just like people like to sweat when they have a cold. Human sweat contains a lot of sulfur, which will work when it comes into contact with silverware. At the same time, if the external environment may have a great impact on people's health, for example, in a polluted environment, there are many compounds such as acid gas, hydrogen sulfide and nitric oxide in the air, which will also accelerate the oxidation of silver ornaments and lead to the blackening of silver ornaments.
2. Silver has a strong bactericidal ability. Silver can decompose a very small amount of silver ions in water. This kind of silver ion can adsorb microorganisms in water, so that the enzymes on which microorganisms breathe lose their function, thus killing microorganisms. As long as a small amount of silver is dissolved in water and becomes silver ions, it has high bactericidal ability. Scientists have done experiments. Twenty-three liters of sewage (containing more than 7,000 Escherichia coli per milliliter) were treated with silver electrode for three hours, and all the Escherichia coli died. A few parts per billion of silver can make a liter of water clean. According to the experiment, typhoid bacilli can only survive 18 hours on silver tablets, and diphtheria bacilli can only survive for 3 days on silver tablets. If the skin is scratched and there is no medicine for a while, put silverware on the wound immediately to prevent infection. Therefore, wearing silver ornaments for a long time is good for people's health, and there is still a certain scientific basis.