The economic development environment is also polluted everywhere, and soil, water, food, etc. all have metal-based hazards. Under such a background, people's quality requirements for life are getting higher and higher, and food safety issues, environmental pollution problems, and land use issues are all receiving major attention. Therefore, all walks of life must conduct safety experiment analysis under national standards and conduct circulation under the analysis of safety standards.
Therefore, laboratory research and laboratory testing have become popular. Whether the data of the sample element analysis results in the laboratory is prepared depends not only on the analytical instrument but also on whether the sample itself is completely or not. The laboratory inorganic sample pretreatment method There are many kinds of common, wet digestion, and the most used. Graphite Digestion Apparatus - There is such an acid-sucking link in the wet digestion of electric hot plates. How many people know what is the purpose of digesting samples to catch acid?
There are several main purposes for picking up acid after sample digestion.
1. The acid is mainly used to reduce the acid concentration in the sample solution, so that the acid concentration is close to the acidity of the standard solution, and finally achieve an ideal environment in the analysis of the machine.
2. Another purpose of catching acid is to reduce the acidity and protect the equipment. If the acidity is too high, it will directly or indirectly affect the service life of the instrument. In particular, perchloric acid and hydrofluoric acid, corrosive comparison must be cleaned before the machine.
3. If the acid is not used, the acidity of the solution will be inverted and the graphite tube will be affected.
The above little knowledge, the lab's Xiaomeng new people, do you understand, silently collect, the lab is a place where Crouching Tiger, Hidden Dragon, welcome prawn to contribute and share your experience with us. Pay attention to the Gdana public number to learn more about small knowledge.
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