ICP emission spectrometry is widely used in the research of basic disciplines such as physics, chemistry, biology and astronomy, as well as important sectors of the national economy such as metallurgy, geology, minerals, building materials, machinery, chemicals, agriculture, environmental protection, food and medicine. the use of. include:
(1) Application in metallurgical industry and metal alloy analysis
This is one of the traditional applications of ICP emission spectrometry. It mainly includes rapid semi-quantitative analysis of blanks and semi-finished products (for metal material classification), non-destructive analysis of mechanical parts, determination of small and trace elements in metals and alloys, analysis of trace inclusions in metals, local and thin metals Layer and layer-by-layer analysis, gas analysis in metal alloys, slag analysis, rapid analysis before furnace, and impurity analysis in pure metals.
(2) Application in geological exploration work
This is another traditional application area of ​​ICP emission spectrometer analysis. It mainly includes studying the composition of the ore sample according to the requirements of the National Reserve Committee; preliminary qualitative and semi-quantitative analysis, clarifying the approximate content of the element, in order to select the chemical analysis method for further analysis; simultaneous analysis of multi-element of geochemical samples; rare and rare Quantitative analysis of rare elements such as rare earth elements, quantitative analysis of trace elements, identification and analysis of particulate single minerals and particulate inclusions.
(3) Application in environmental analysis, agricultural and biological sample analysis
The application of ICP emission spectrometry in environmental analysis, agricultural and biological sample analysis, including air, atmospheric dust and particulate matter analysis, soil and fertilizer analysis, plant, animal and organic ash analysis, and natural water and wastewater analysis. . Although the application of emission spectroscopy in these fields is not as common as the analysis of metallurgical and geological samples, the importance of these fields in the national economy and the scope of emission spectroscopy in solving problems in these fields are Potential, it is also receiving widespread attention. Especially for certain trace elements, such as B, Co, Cu, Mn, Mo and Zn, although they are extremely low in air, water and biological tissues, they are closely related to the growth and development of plants and animals. relationship. The ICP emission spectrometer analysis is one of the most effective methods for determining these trace elements.
(4) Application in astronomical research
A study on the chemical composition of a celestial planet: Emission spectroscopy has been used to find that there are many elements on the planet and on Earth that have the same elements on the planet (there are 66 elements found in the sun). In addition, some unidentified spectral lines have been discovered, which may be the lines of elements that do not exist on Earth, or the unusual excitation conditions on the celestial bodies (which are difficult to obtain on Earth). The line of the element that also exists on Earth.
2 Star motion velocity and direction: The Doppler effect of the spectral line can be used to determine the speed and rotation of the planet. The emission spectroscopy can find the binary stars that can be found by the telescope (if the hypothesis is that the two stars are in turn) For objects moving closer to and farther from the Earth, the spectral line of the binary star periodically becomes a double line).
The temperature measurement of the 3 planets can measure the temperature of the planet according to the intensity ratio of different spectral lines (the principle is the same as the various plasma temperature measurement methods).
With the development of ICP emission spectrometer, its application range has gradually expanded, and the application of the instrument has become an indispensable analytical research method.
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