Energy Dispersive X-ray Spectroscopy (EDS), also known as Energy Dispersive X-ray Analysis (EDAX or EDX), is a chemical characterization method used in testing labs for the elemental analysis of a solid material. To assess a sample's properties, the EDS spectrum recorded for the sample is analyzed. The best material testing laboratory services are offered by Infinita Lab to customers in the USA and other countries.
Energy Dispersive X-ray Spectroscopy (EDS), also known as Energy Dispersive X-ray Analysis (EDAX or EDX), is a chemical characterization method used for the elemental analysis of a solid material. It is used to identify the elements in a sample (qualitative analysis) and determine their relative abundance (quantitative analysis) by generating EDS spectrum. It can detect elements from carbon to uranium in quantities as low as 1.0 wt% of the sample. When coupled with techniques like Scanning Electron Microscope (SEM), Transmission Electron Microscopy (TEM), and Scanning Transmission Electron Microscopy (STEM), EDS can provide simultaneous compositional information of the sample features.
A focused beam of electrons is directed into the specimen being analyzed in order to trigger the emission of distinctive X-rays from the object. An atom is said to be at rest when its ground state electrons, also known as unexcited electrons, are constrained to specific energy levels called electron shells. An electron in an inner shell may be excited by the incident beam, causing it to be ejected from the shell and leave an electron hole in its place. The energy differential between the higher-energy outer shell and the lower-energy inner shell may then be released in the form of an X-ray as an electron from the outer, higher-energy shell fills the hole. An energy-dispersive spectrometer can determine the quantity and energy of X-rays released from a specimen.
EDS enables the measurement of the specimen’s elemental composition since the energies of the X-rays are indicative of the energy difference between the two shells as well as the atomic structure of the emitting element. This can be used to perform point analysis, line scans, or map out the lateral distribution of elements across the SEM, STEM, or TEM imaged area. The spatial resolution of these elemental analysis areas can be as low as 10 nm, depending on the electron microscopy technique used.
Experts at Infinita Lab assist our clients based in the USA and other countries across the globe in choosing the most appropriate test strategies related to Energy Dispersive X-ray Spectroscopy, that are performed in our testing labs, to ensure that all projects are accurate, timely, and cost-effective.
Video 01: Working of Energy Dispersive X-ray Spectroscopy (EDS)
Common Uses of Energy Dispersive X-ray Spectroscopy (EDS)
Advantages of Energy Dispersive X-ray Spectroscopy (EDS)
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We at Infinita Lab, USA, provide a range of energy-dispersive X-ray spectroscopy tests to identify different substances in a sample.
The cost depends on the type of test. SEM+EDS analysis of materials starts at $325/hour.
Energy-dispersive X-ray spectroscopy (EDS) is an analytical technique used to identify different substances in a sample. The data from the test is used for material identification, coating analysis, contaminant identification, and corrosion analysis.
Energy-dispersive X-ray spectroscopy (EDS) analysis and electron microscopy techniques include point elemental analysis, line scans, and elemental mapping of samples. Advanced 2D and 3D mapping are available when EDS is combined with SEM/STEM/TEM imaging and FIB etching.
Energy Dispersive X-ray Spectroscopy (EDS or EDX or XEDS) identifies the type of elements in a sample (qualitative analysis) and measures their relative abundance (quantitative analysis) by generating EDS spectrums.
The operating principle of EDS is taken from Moseley’s law, which gives the relationship between the frequency of light released and the atomic number of the atom. In EDS, X-rays release core electrons (non-valence shell electrons) from an atom.
Electron Dispersive X-ray Spectroscopy (EDS) and Electron Dispersive X-ray (EDX) analysis refer to the same test and can be used interchangeably. The only difference is that EDX refers to the testing method, while EDS is the name of the equipment used in the test.
Common Uses of Energy Dispersive X-ray Spectroscopy (EDS)
o Surface mapping of polymer composite membranes by EDS spectrum
o Characterization of polymer Reverse Osmosis (RO) membrane
o Elemental composition and toxic effect of nanoparticles
o Detection of nanoparticles (for the improvement of the chemotherapeutic agents) in the drugs
o Detection of metal contaminants in non-small cell lung cancer
o Characterization of different isotypes of calcification in the tissues that can cause diseases
o Investigation of hazardous heavy metals in agricultural land and human tissues
o Analysis of organic to metal bonding failure modes
o Examination of gunshot residue
ASTM E572 test method covers the analysis of stainless and alloy steels by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF). It provides rapid, multi-element determinations with sufficient accuracy to assure product quality.
The ASTM D2674 test is a standard test method for the analysis of sulfochromate etch solutions used in the surface preparation of aluminum. The ASTM D2674 standard specifies a method for determining the efficacy of an etchant used to prepare the surface of aluminum alloys for subsequent adhesive bonding.
An immunological method for quantization of Hevea Natural Rubber (HNRL) proteins using rabbit anti-HNRL serum. Rabbits immunized with HNRL proteins react to the majority of the proteins present, and their sera have the capability to detect most if not all the proteins in HNRL.
ASTM G65 measures the resistance of metallic materials to abrasion using the dry sand/rubber wheel apparatus. The quality, durability, and toughness of the sample are determined using this test. Metallic materials are ranked in their resistance to scratching abrasion under a controlled environment.
ASTM E2141 test methods provide accelerated aging and monitoring of the performance of time-dependent electrochromic devices (ECD) integrated in insulating glass units (IGU). This test helps to understand the relative serviceability of electrochromic glazings applied on ECD.
ASTM C724 test method is used in analyzing the quality and ease of maintenance of a ceramic decoration on architectural-type glass. This test method is useful in the acknowledgment of technical standards.
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