The principle of atomic absorption spectrometry is that, when the characteristic spectrum of the element to be measured radiated by the light source passes through the vapor of the sample, it is selectively absorbed by the ground state atoms of the element to be measured in the vapor.Under certain conditions, the degree of absorption is directly proportional to the number of atoms in the ground state.The content of each element in the sample can be obtained by measuring the absorption degree of the radiation line through the light splitting system and the detector.After the sample is dissolved, it is made into the solution to be determined, and determined according to the analysis conditions of each element.
SY/T5161—2002 Determination of some elements in rocks atomic absorption spectromery