Results 211 to 220 of about 77,065 (262)
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1972
Investigation into many branches of chemistry and physics reUes extensively on the analysis of absorption spectra in the ultraviolet region (200 to 400 μm). The analysis of the ultraviolet (UV) spectrum depends explicitly on the needs of the investigator.
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Investigation into many branches of chemistry and physics reUes extensively on the analysis of absorption spectra in the ultraviolet region (200 to 400 μm). The analysis of the ultraviolet (UV) spectrum depends explicitly on the needs of the investigator.
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Ultraviolet-visible spectroscopy
1996This chapter tells the history of the arrival of ultraviolet (UV) spectroscopic analysis during the 1930s, which was an important milestone in analytical chemistry. It demonstrated the advantages of non-destructive analysis. The chapter discusses the benefits brought by this development, such as vast savings in time, and the ability to work with much ...
Laurence M. Harwood +1 more
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Far-Ultraviolet Spectroscopy and Deep-Ultraviolet Spectroscopy: Industrial Applications
2015FUV or DUV absorption spectrum has very strong absorptivity with a steep absorption edge. Since the spectral changes in the intensity, position, and bandwidth of the band are observed sensitively even at the portion of the tail band, these spectra can be applied for a powerful method in industrial analytical applications.
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Visible and Ultraviolet Spectroscopy
1994The energies associated with the visible and ultraviolet (UV) regions of the electromagnetic spectrum range from 160 to about 585 kJ/mol. Such energies are sufficient to cause electronic transitions within molecules and to ionize many substances. The electrons involved are the outer or bonding electrons, and the nomenclature used to describe the ...
Yeshajahu Pomeranz, Clifton E. Meloan
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Spectroscopy in the Vacuum Ultraviolet
1966Publisher Summary This chapter focuses on the recent results and interpretations from vacuum ultraviolet spectroscopy that are of fundamental interest to atomic and molecular physics, or have relevance to collisional or radiative transfer processes in laboratory or astrophysical plasmas.
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Ultraviolet Photoelectron Spectroscopy
2018UPS is a photoelectron spectroscopy technique using photons in the ultraviolet region (typically from 10 to 150 eV) as an excitation source. The technique is used to study valence electronic structures of solid surfaces, molecular orbital energies of adsorbed species and work functions of the surfaces and their changes induced by the adsorption of ...
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2019
The discussion of Ultraviolet (UV) spectra is based on the characteristic absorption arising from the transition of different types of electrons in organic molecules. Mainly, there are three types of electrons s, p, and p electrons that are commonly encountered in organic molecules.
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The discussion of Ultraviolet (UV) spectra is based on the characteristic absorption arising from the transition of different types of electrons in organic molecules. Mainly, there are three types of electrons s, p, and p electrons that are commonly encountered in organic molecules.
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Ultraviolet and Visible Spectroscopy
2001The article contains sections titled: 1. Introduction 1.1. Comparison with Other Spectroscopic Methods 1.2. Development and Uses 2. Theoretical Principles 2.1. Electronic States and Orbitals 2.2. Interaction Between Radiation and Matter 2.2.1. Dispersion 2.2.2. Absorption 2.2.3. Scattering 2.2.4. Reflection 2.2.5.
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Ultraviolet and Visible Spectroscopy
Ultraviolet and Visible spectroscopy was one of the first instrumental methods for analysis. It may be used to characterise a wide range of materials. The UV-Vis provides information based on the degree of absorption or transmittance of a variable wavelength of beam light and sample responses.openaire +1 more source