Atomic absorption spectrometry,as an important elemental analysis technique,has extensive applications in the detection of rare earth elements in rock samples.This article outlines the basic principles of atomic absorption spectrometry and introduces detail the sample pretreatment procedures including washing,drying,crushing and acid digestion of the samples.The detection procedures cover sample introduction and preparation,composition and characteristic wavelengths selection of the spectrometer,adjustment of operating conditions,and establishment of calibration curves.The article also emphasizes precautions needed in the experiment,such as adjustment of the photometer,control of contamination and loss in sample processing,and maintenance of instrument performance.Finally,the summary highlights the significance and application prospects of atomic absorption spectrometry in the detection of rare earth elements in rock samples.
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