How to detect the purity of gold in China
As one of the world's largest golden producers in the world, its gold products have attracted much attention in the market.For buyers, it is crucial to understand the purity of gold.This article will introduce how the purity of China's golden gold is detected.
external assessment
Appearance testing is one of the simplest and intuitive methods.First of all, you can use the naked eye observation to determine whether the gold products are bright, uniform, and anaerobic spots.In addition, you can also use a magnifying glass to check whether there are defects or doping on the surface.
Chemical reagent
The chemical reagent method is one of the ways to detect goldenness.By dripping a small amount of nitric acid on the sample and observing the color changes and reactions, the content is judged.Different purity will show different degrees and color reactions after adding nitric acid.
X -ray fluorescent analysis method
X -ray fluorescent analysis method is a precise and accurate test of the material component and content elements very effective and fast. It stimulates the sample through high -energy X dust lines to obtain information with absorption or scattered dust.
Directors test method
Different from the principle of conducting the nature of different materials using different materials. Generally, the synthesis of high -quality (closer) will increase the resistance value of them because of more silver and other materials.
If you want to know whether the object in your hand is a real 24K or a mixed other low -colored and other elements, you need to use professional equipment and expert guidelines.
