Why do some people wear silver black, others can't?

Now, we can see now, children, and young people, or the old man's house, hand carry some silver, it is more popular with people, but in the process of wear, can appear the phenomenon of black, but there are some people who do not, let the author of the ornament factory in guangzhou to discuss for us. The ancients said: with the body, health and wealth will accompany, Ann five zang-organs, calm mind, check fright, in addition to evil. In medicine, it is better than the effect of other precious metals on human health is much higher. So with what good, bad, wearing silver ornaments will be black is that true? Many ancient poison because contain sulfur element, has studied chemistry at school knows, silver and sulfur chemical reaction happens to generate sulfide silver, silver sulfide, as a kind of unstable salt compounds, presents a kind of film. This color is only the surface reaction, with toothpaste or drug elimination. Is actually the easy oxidation of sterling silver jewelry, and sulfur oxide yellow, after black. In our life, sulfur is everywhere. In the air, the skin, exhaust gas, and even some food, contain sulfur. Because of the possibility of REDOX reaction everywhere, silver, silver with long, will have different degrees of black, lose luster phenomenon it is a natural phenomenon, is not because the body of toxins. Experts said that the silver bracelet light or black ties with health or not is not necessarily, some friends are wearing silver will wear more and more bright, because it was no sulfur in sweat, and other skin secretions instead of protecting the silverware. And some friends wear silver will make the dark or black, just because these people sweat more sulfur, together with the silver in chemical reactions, making it turn black, does not represent a unhealthy body. Darkened, and the silver is because the oxidation reaction, and silver oxide is inevitable. When wearing a silver sulfide, ammonia, etc. , and sweat of the human body in the air will also contain substances such as hydrogen sulfide, nitric oxide, which can lead to surface of the silver oxide, thus becomes angry, lose luster. Silver black is associated with the degree of acid and alkali of human body sweat, sweat acidic, silver black speed will be faster, and this is healthy or not doesn't matter. If you'd like to know more about why some people wear silver will turn black, some people but not information, you can click on guangzhou jewelry factory website page to browse!