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Metallography and Material Characterization
Published in Zainul Huda, Metallurgy for Physicists and Engineers, 2020
The energy dispersive X-ray spectroscopy (EDS) involves the use of the X-ray spectrum emitted by a solid sample bombarded with a focused beam of electrons to obtain a localized chemical analysis i.e. the elemental distribution in a specified region in an alloy. By scanning the beam in a television-like raster and displaying the intensity of a selected X-ray line, element distribution images or “maps” can be produced (Agarwal, 1991; Grieken and Markowicz, 2002). Although, a scanning electron microscope (SEM) is primarily designed for producing electron images (see Figure 5.8), it can also be used for elemental mapping, and even point analysis, provided an X-ray spectrometer is added. In EDS, the relative intensity of an X-ray line (peak) is approximately proportional to the mass concentration of the element concerned (see Figure 5.10).
Fluoride, arsenic and uranium removal from water using adsorbent materials and integrated membrane systems
Published in Alberto Figoli, Jan Hoinkis, Jochen Bundschuh, Membrane Technologies for Water Treatment: Removal of Toxic Trace Elements with Emphasis on Arsenic, Fluoride and Uranium, 2016
Hacene Mahmoudi, Noreddine Ghaffour, Mattheus Goosen
As can be seen from Figure 6.4a, the adsorbent cross section had a very porous structure implying a high adsorption capacity. This pore texture was attributed to the sintering process (i.e., making the granules from powder). The EDS spectrum of Figure 6.4e showed the presence of Fe, Al, Si, O and Cl in the surface of adsorbent, which was attributed to the impregnation process with AlCl3 and FeCl3 salt solutions. Energy-dispersive X-ray spectroscopy (EDS) is an analytical technique normally used for the elemental analysis or chemical characterization of a sample.
Energy Analyzers of Electrically Charged Particles
Published in Igor Bello, Vacuum and Ultravacuum, 2017
A radiative process is a relaxation process with emission of photon. Consider, an electron in an atom that transits from its shallower energy level L2 to the vacancy in level K, which leads to photon emission and consequent reduction of the internal energy of the atom. After photon emission, the atom is in an ionized state but with a vacancy in the core level L2. The energy (wavelength) of the emitted photon is unique to the element and can be used for atom identification by energy dispersive x-ray spectroscopy (EDX) or wavelength-dispersive x-ray spectroscopy (WDS).
Effect of synthetic antioxidant-doped biodiesel in the low heat rejection engine
Published in Biofuels, 2023
Krishna Kumar Pandey, Murugan S
Energy dispersive X-ray spectroscopy (EDS) is a prominent technique that is used to identify the elements present in a given sample [33]. It is used to conduct a microanalysis of the chemical composition of elements. It is associated with the SEM image of a specified area and provides a different characterization of surface morphology. Surface maps from a sample SEM image are mostly determined by lateral distribution [34]. This technique is used to determine the purity of materials or compounds. Figure 4 is an EDS spectrogram of the IPPD compound. Table 6 identifies the elements present in the IPPD compound and lists their percentages by weight. Carbon is present in major amounts, and sodium (Na) is present as impurities.
Nanoscale synthesis, structural elucidation, DFT, and biological activity of amide appended transition metal(II) macrocyclic complexes in drug delivery system
Published in Journal of Coordination Chemistry, 2022
Meenakshi Patyal, Kirandeep Κaur, Promila Sharma, Nidhi Gupta, Ashok Kumar Malik, Kamaldeep Paul
Energy-dispersive X-ray spectroscopy (EDS or EDX) is a standard method for identifying and quantifying elemental compositions in a tiny sample of complexes (even a few cubic micrometers). It helps to analyze the elemental composition of the complexes, so the characteristic X-ray signals emitted by different elements were detected, which provide the number of elements present in the complex. It is an analytical method used to determine the chemical components of complexes [19]. As indicated by the EDS chemical maps, the presence of Mn, Ni, and Cu is confirmed in the corresponding nanocomplexes samples (Supplementary Figure S7).
Thermal Stability Testing of LANA.75
Published in Fusion Science and Technology, 2021
Steven P. Reynolds, Gregory C. Staack, Benjamin J. Morgan
Energy dispersive X-ray spectroscopy (EDS) is an analytical technique used for elemental analysis or chemical characterization of small surfaces of a sample. Its characterization capabilities are due in large part to the fundamental principle that each element has a unique atomic structure allowing a unique set of peaks in its electromagnetic emission spectrum. For the Carl Zeiss SEM, the EDS is performed using an Oxford Instruments X-Max 20 silicon drift detector to detect elements greater than atomic number 3 (Z > 3). EDS data and maps are analyzed by Oxford Instruments’ INCA 4.15 data analysis software.