AAS Hollow Cathode Lamp
The hollow cathode lamp in AAS (Atomic Absorption Spectrophotometer) usually refers to the hollow cathode lamp, which is an important part of the light source in AAS analysis. These lamps are designed for a specific element to emit characteristic spectral lines of that element, which will be absorbed by the atoms of the element being measured in the sample.
Features of AAS hollow cathode lamps:
1.Strong targeting: Each element lamp can only emit characteristic spectral lines of a specific element.
2.High stability: The hollow cathode lamp works under a stable voltage and emits stable spectral lines.
3.Long service life: When used under appropriate conditions, the hollow cathode lamp can last for a long time.
4.Replaceable: AAS instruments can usually be equipped with multiple hollow cathode lamps for analyzing different elements.
The role of hollow cathode lamp in AAS:
1.Light source: Hollow cathode lamp is an important light source in AAS, used to generate characteristic radiation of the element to be measured.
2.Excite element atoms: Hollow cathode lamp can excite atoms in the sample and make them enter the ground state. Measure absorbance: The excited light passes through the sample, and its absorbance is proportional to the concentration of the element to be measured in the sample.
3.Quantitative analysis: The content of the element to be measured in the sample can be quantitatively analyzed by measuring absorbance.
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