FAQ > Glossary of Terms > X Series > XPS(X-ray Photoelectron Spectroscopy) or ESCA(Electron Spectroscopy for Chemical Analysis)

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X Chromosomes, Xenobiotics, XPS(X-ray Photoelectron Spectroscopy) or ESCA(Electron Spectroscopy for Chemical Analysis)

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XPS(X-Ray Photoelectron Spectroscopy) or ESCA (Electron Spectroscopy for Chemical Analysis)
A surface-sensitive technique capable of detecting all elements with an atomic number greater than that of helium. ESCA provides data on the outermost several atomic layers of a material, and has a sensitivity in the order of 0.5 atomic percent. A primary advantage of ESCA is that it can both determine and quantify the chemical state of the elements detected (i.e. metallic state or oxide state)