X-ray Fluorescence Laboratory has Philips Model MiniPal XRF used for qualitative and quantitative analysis of major and trace elements in geochemical and mineralized samples.
The basis of qualitative and quantitative analysis of elements by X-Ray spectrometry is on Moseley relations.  :
                                                           1/λ=Z2
In this relation, the reverse of X-Ray wavelength characterizes a series of spectrum lines which is proportional to Z2.
By measuring X-ray wavelengths emitted from a highly excited sample, emitter atoms can be easily determined.
According to Quantum Hypothesis, electromagnetic radiant energy is inversely proportional to the wavelength. Therefore, source of X-Ray energy can be determined from X-Ray emitted from a sample. Using this technique, most elements can be analyzed by Wave length Dispersive XRF and Energy Dispersive XRF.