Question

simply summary of x-ray fluorescence spectrometer

Answer 1

X ray fluoro spectrometer XRF spectrometer is an x Ray instrument used for non destructive chemical analples of rocke, minerals sediments and fmids. It works on wavelength dispersive spectroscopic puniples that are similar to an electron microprobe (EPMA). The relative ease and low cost of sample Preparation and the stability and ease of use of x ray spectrometers make this one of the most widely else methods for analysis of major and trace elements in docks, Minerals and Sediment. principle It involves the interaction between electron beams and x rays with Samples The analysis of major and trace elements in gedogical materials by x ray fluroscence is made possible by the behaviour of atoms when they interact with radiation when materials are excited with high energy, short wavelengthe radiation they can become ionized. if the energy of radiation is sufficient to dislodge a tightly held inner electron, the atom becomes unstable and an electron replaces inner electre when the happen energy is released due to the decreased binding energy of inner electron orbital compared with an outer one. The radiation emitted a riquiry outer

is called sed at is is essed fluorescent to detect This is essed radiation the abundance of Elements sample is illuminated by intense xray beam. How does it worke- he the x ray beam is produced by Rh-target although W. Mo, Cr and other when this x ray beam illuminates the sample. of ie said to be excited. This in turn emite x rays along a spectrum of coavelengths characteristic of the type of atoms present in ample eve wanted various type of detectors (gas floco proportional and scintillation) are lesed to measure the intensity of emitted blam. The floco cocenter is commonly cutillized for measuring long wavelength (k Spectra from elements lighter than an) Scintillation detector is commonly used to analy ze shorter wavengtu in Xray Spectreem COM from Nb to 1 Lspectra (Kspects a of element of Th and u. xrays of Intermediate was elength (kspectra of Element from an to 2 and L Spectra from Ba and rare earth elements) are measured by both detectors. Intensity of energy measured is ured is proportional to abundance of element in the sample -

1 Applications una nude & Research in igneous, sedimentary and Metamorphic Petrology & soil surveys, kement prodruction, Metallera Petrolecem industry *) it also involves in investigations of Bulk Chemical analyses of major elements trale elemente Limitations on T & It can't distinguish the isotopes of a elements *) It can't distinguish the love of the Same element of different Valence states *) It accurately measure of elements with all the abrendance only in most Natural earth materials o n