Reasons: 1. Gold jewelry is prevented for a long time in a sulfur environment, and red spots may be available on the surface. In addition, when gold jewelry is in contact with acid, there may also be red spots. This is due to the result of the oxidation layer on the surface of the jewelry on the surface of the jewelry. 2, the discoloration or fading of gold jewelry is closely related to the human sweat. 99%of human sweats are water, and about 1%are waste and harmful substances in the human body, such as chlorine substitutes, lactic acid, urea ammonia, etc. If according to national standard precious metals, the content of sufficient gold jewelry is above 990%, the content of thousands of gold jewelry is more than 999%, and its gold content is not 100%. This shows that although their content is very high, it may contain other impurities. Pucting information: Gold preventing discoloration 1. Avoid direct contact with perfume, cosmetics, shampoo. 2. Try to remove the gold under the chemical venue. 3. Try to swim on the beach as much as possible. 4. Try not to wear as much as possible during chemistry experiments. The items in life are mercury -containing, such as thermometer, pressure gauge, blood pressure meter, cosmetics, drugs, sterilizers, shower gels, perfumes, gums, disposable dry batteries, moisture -proof agents, etc. They all contain trace mercury. Reference materials Source: Baidu Encyclopedia-Gold Reference materials Source: Baidu Encyclopedia-Oxidation response
I. Gold becoming red If according to national standard precious metals, the content of foot gold jewelry is more than 990%, the content of thousands of gold jewelry is above 999%, and its gold content is not 100%. This shows that although their content is very high, it may contain other impurities. Gold jewelry is prevented for a long time in a sulfur environment, and red spots may be available on the surface. In addition, when gold jewelry is in contact with acid, there may also be red spots. This is due to the result of the oxidation layer on the surface of the jewelry on the surface of the jewelry. . Gold turning white 1. The main reason for gold -turned white is that gold is mercury to form mercury. Life supplies often contain mercury. If you don't pay attention to the contact with gold jewelry, you will form golden mercury, which is white and brittle on the surface of the gold jewelry; . When wearing white jewelry such as gold and platinum or silver It is likely that the metal of the white jewelry is wiped on the gold jewelry, or the gold is wiped on the white jewelry. This color change only appears on the frictional part, and it is on the surface, with wipes. . Gold turning black The discoloration or fading of gold jewelry is closely related to the human sweat. 99%of human sweats are water, and about 1%are waste and harmful substances in the human body, such as chlorine substitutes, lactic acid, urea ammonia, etc. After contacting the silver and copper in gold jewelry, these substances will produce chemical reactions, produce silver chloride and copper sulfide, and show dark black chemical salt. This kind of chemical salt is often dropped from gold jewelry to pollute the skin of the wearer, leaving a very obvious black stain on the skin.
Hello should be caused by the insufficient gold content of gold It is difficult to react with other materials , even if it is oxidized, it is not red Let's check the store and consult the other side by the way The hope to help you and hope to adopt it. thanks
Reasons:
1. Gold jewelry is prevented for a long time in a sulfur environment, and red spots may be available on the surface. In addition, when gold jewelry is in contact with acid, there may also be red spots. This is due to the result of the oxidation layer on the surface of the jewelry on the surface of the jewelry.
2, the discoloration or fading of gold jewelry is closely related to the human sweat. 99%of human sweats are water, and about 1%are waste and harmful substances in the human body, such as chlorine substitutes, lactic acid, urea ammonia, etc.
If according to national standard precious metals, the content of sufficient gold jewelry is above 990%, the content of thousands of gold jewelry is more than 999%, and its gold content is not 100%. This shows that although their content is very high, it may contain other impurities.
Pucting information:
Gold preventing discoloration
1. Avoid direct contact with perfume, cosmetics, shampoo.
2. Try to remove the gold under the chemical venue.
3. Try to swim on the beach as much as possible.
4. Try not to wear as much as possible during chemistry experiments.
The items in life are mercury -containing, such as thermometer, pressure gauge, blood pressure meter, cosmetics, drugs, sterilizers, shower gels, perfumes, gums, disposable dry batteries, moisture -proof agents, etc. They all contain trace mercury.
Reference materials Source: Baidu Encyclopedia-Gold
Reference materials Source: Baidu Encyclopedia-Oxidation response
I. Gold becoming red
If according to national standard precious metals, the content of foot gold jewelry is more than 990%, the content of thousands of gold jewelry is above 999%, and its gold content is not 100%. This shows that although their content is very high, it may contain other impurities. Gold jewelry is prevented for a long time in a sulfur environment, and red spots may be available on the surface. In addition, when gold jewelry is in contact with acid, there may also be red spots. This is due to the result of the oxidation layer on the surface of the jewelry on the surface of the jewelry.
. Gold turning white
1. The main reason for gold -turned white is that gold is mercury to form mercury. Life supplies often contain mercury. If you don't pay attention to the contact with gold jewelry, you will form golden mercury, which is white and brittle on the surface of the gold jewelry;
. When wearing white jewelry such as gold and platinum or silver It is likely that the metal of the white jewelry is wiped on the gold jewelry, or the gold is wiped on the white jewelry. This color change only appears on the frictional part, and it is on the surface, with wipes.
. Gold turning black
The discoloration or fading of gold jewelry is closely related to the human sweat. 99%of human sweats are water, and about 1%are waste and harmful substances in the human body, such as chlorine substitutes, lactic acid, urea ammonia, etc. After contacting the silver and copper in gold jewelry, these substances will produce chemical reactions, produce silver chloride and copper sulfide, and show dark black chemical salt. This kind of chemical salt is often dropped from gold jewelry to pollute the skin of the wearer, leaving a very obvious black stain on the skin.
Hello
should be caused by the insufficient gold content of gold
It is difficult to react with other materials
, even if it is oxidized, it is not red
Let's check the store and consult the other side by the way
The hope to help you and hope to adopt it. thanks
The gold with redness is likely to be the golden copper surface is not a real pure gold.
Sweat, cosmetics oxidation