Wearing silver ornaments may soon turn black, just as ancient people used silver needles to examine food and wine. Whether it is toxic or not, if it is toxic, the silver needle will turn black immediately, so if you wear silver jewelry often, it can help your body excrete toxins.

The truth is that silver needles were used to measure arsenic in ancient times. Due to the limited technology in ancient times, arsenic will be mixed with a lot of sulfur or sulfide, and silver will react with sulfur to generate black silver sulfide precipitate, so silver will turn black when it meets arsenic, which is also the reason why ancient people used silver needles to test toxicity.

Modern poisons and toxins need the assistance of scientific and technological means to be detected, and it is impossible to judge them with a small silver needle, so it is wrong to say that silver ornaments can detoxify.

Extended data:

The chemical properties of silver easily react with sulfur and hydrogen sulfide to form black silver sulfide. The ancient silver needle antiquities are toxic because ancient arsenic is often used to poison. The main component of arsenic contains a small amount of sulfide, so the contact between sulfide and silver will produce a chemical reaction, which will make the silver ornaments black.

Silver can also react with oxygen in the air to produce brown-black silver oxide. At high temperature, the oxidation reaction rate is faster, and at room temperature, the oxidation rate is slower. Secondly, in the environment, if there are many compounds such as silver ornaments, acid gases, hydrogen sulfide, nitric oxide, etc., silver ornaments will react with these gases, resulting in black silver ornaments.

Baidu encyclopedia-silver jewelry

People's Network-Silver jewelry turns black, is it a sign of poor health? No! Just for these reasons.