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About Atomic Emission and Optical Emission Spectrometers
Atomic emission and optical emission spectrometers determine analyte concentration via a quantitative measurement of the optical emission from excited atoms. Analyte atoms in solution are aspirated into the excitation region where they are desolvated, vaporized, and atomized by a flame, discharge, or plasma. These high-temperature atomization sources provide sufficient energy to promote the atoms into high energy levels. The atoms decay back to lower levels by emitting light. Since the transitions are between distinct atomic energy levels, the emission lines in the spectra are narrow. The spectra of samples containing many elements can be very congested, and spectral separation of nearby atomic transitions requires a high-resolution spectrometer. Since all atoms in a sample are excited simultaneously, they can be detected simultaneously using a polychromator with multiple detectors. This ability to simultaneously measure multiple elements is a major advantage of AES compared to atomic-absorption (AA) spectroscopy.
Atomic emission and optical emission spectrometers characterize all forms of emission from atoms. These are principally electrons, x-rays and optical photons. So strictly, therefore, AES should include the spectral measurement of all types of atomic emissions.
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Engineering Web: Atomic Emission and Optical Emission Spectrometers
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NIST High-Resolution UV and Optical Spectroscopy Facility Spectrometers in NIST's High-Resolution Ultraviolet and Optical Spectroscopy Facility are the most powerful in the world for observations of emission |
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Ocean Optics - Smart, Innovative, Flexible, Solvers Spectrometer is a small-footprint, modular spectrometer that provides optical resolution to 0.035 nm (FWHM). The HR2000 is especially suited for See Ocean Optics, Inc. Information |
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