The characteristics and methods of gold
Gold is a precious and valuable metal, with unique physical and chemical characteristics, so it is widely used as currency, jewelry and investment in history.This article will introduce the characteristics of gold in detail and how to identify it.
Gold's physical characteristics
Gold is a kind of precious metal that is rare, stainless, extended and easy to process.It has a unique luster and color, usually showing bright and warm yellow.In addition, gold has high density and good conductivity.
In terms of purity, pure gold is defined as 24K (24), while other alloys are marked as 18K, 14K, etc. according to their content.These alloys will affect their hardness and color.
Chemical stability
Due to its inertia, under common conditions, it will not rust or corrodes even if it is exposed to air or water for a long time.This makes gold an excellent material for making jewelry and other decorations.
Use the transmission X -ray method to detect
The X -ray transmission method is a non -invasive detection method that can quickly and accurately determine whether the sample contains the element (such as platinum) without the existence of no doped substances and gaps and gives the corresponding results report.
This technology is mainly stimulated by exerting X for the sample, and the difference in the absorption capacity of different atomic order elements is used to achieve quantitative analysis of the target element.
Through this technology, it can quickly identify whether the product tested products meet the requirements of relevant state regulations.
However, it should be noted that because X is about to cause harm to human health, do not directly align the X -light source to test the human body.
Density measurement method test authenticity
The density meter can help us determine whether a sample is made of a product made of really pure and unades.
The principle of tacit understanding is that the sample and the basic block are placed in the test tube to fill the liquid and then read the liquid surface height data to calculate the proportion of the two.
After knowing the actual density value, you can compare whether to meet the expected requirements compared with the nominal data.
Summarize:
Although the tacit understanding looks similar in appearance, it has attracted many people in the inside because of its rotten beauty. However, it has also triggered many pretending incidents.
Finding a professional organization for certification may be the best way.
In addition, many new models such as handheld fast analysis instruments have also been launched in the market.
