1. Instrument introduction
ICP (Inductively Coupled Plasma) is a high-temperature, high-energy non-equilibrium plasma and a widely used element analysis technology. After ICP comes into contact with the sample, the atoms and ions in the sample will be heated and ionized, and then enter the plasma for excitation ionization, emitting specific spectral lines, which will be detected and calculated by spectrometer. This can determine the type and content of elements in the sample.
2. Working principle
ICP consists of a timely glass spark chamber and a plasma gas source. In the case of coaxial inductive coupling, the plasma gas source generates high-energy plasma. When the sample enters the plasma, the atoms and ions in the sample are ionized, releasing light with specific frequency and intensity. Light enters the spectrometer through the optical path, producing specific spectral lines, and quantitative data of different elements can be obtained according to the change of spectral line intensity. Common ICP spectral analysis methods are ICP-OES and ICP-MS.
3. Scope of application
ICP technology is widely used in environment, geology, food, biological analysis and other fields. For example, it can be used for rapid analysis of trace elements in plants, soil and water, and can also be used for element composition analysis in medicines, cosmetics, medical devices and electronic products. In addition, ICP technology can also be used for the analysis and measurement of metal minerals, as well as the research of modern science and technology such as material science, polymer physics and biochemistry.
In a word, ICP is a modern elemental analysis technology with a wide range of applications, which can be used for sample analysis in various industries. Through ICP technology, the information of element content can be obtained accurately and efficiently, which provides an important data base for laboratory research and industrial production.