Results 281 to 290 of about 48,105 (319)

Ultraviolet stellar spectrophotometry from a balloon platform

, 1974
Y. Kondo, Christopher Wells
openalex   +1 more source

[Reform and exploration of the experimental teaching mode of teaching assistant and group rotation system: taking pharmaceutical analysis experiment course as an example]. [PDF]

Se Pu
Zhao R, Zhang L, Zhang K, Li YX.
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Ultraviolet–visible spectrophotometry

2020
Ultraviolet (UV) and visible spectrophotometry have been utilized in forensic toxicology for both qualitative and quantitative analysis. Lambert discovered that for monochromatic radiation, absorbance was directly proportional to the path length of the incident light through the material.
Alexander G. Shard, Robert C. Schofield, Caterina Minelli   +2 more
openaire   +2 more sources

Far Ultraviolet Solution Spectrophotometry

Applied Spectroscopy, 1973
Techniques and apparatus for extending conventional solution absorption spectrophotometry into the far uv region are discussed. The principal difficulties of spectroscopy in this region are reviewed. Applications and examples are given in inorganic, organic, and biological chemistry.
openaire   +1 more source

Quantitative Ultraviolet Vapor Spectrophotometry

Applied Spectroscopy, 1957
Applications of quantitative ultraviolet vapor spectrophotometry are discussed. A micropipet-sintered disc sample introduction technique based on accurate volume measurements circumvents difficult measurement of low pressures. The method greatly facilitates determination of accurate absorption intensities and thus permits many applications of vapor ...
openaire   +1 more source

Correlations in Ultraviolet Spectrophotometry

Applied Spectroscopy, 1957
In the process of collecting a library of spectra of aromatic compounds for investigation of synthetic liquid fuels, various correlations have been observed. (1) Phenylnaphthalene-type spectra have been noted in related compounds, (2) spectra and structures of fluorene derivatives have been studied; (3) graphs of intensity as a function of wavelength ...
openaire   +1 more source

Wavelength Anomalies in Ultraviolet-Visible Spectrophotometry

Applied Spectroscopy, 2012
Spectral scans of atomic line emission sources with a Shimadzu UV2101PC spectrophotometer show that the nominal wavelength depends upon the instrumental slit width, the wavelength sampling interval, and for some slit widths, also on the specified spectral range.
openaire   +2 more sources

Ultraviolet–Visible Spectrophotometry

2018
UV–Vis spectrophotometry is routinely used in the quantitative chemical analysis of solutions. In this article, applications to solid-state spectroscopy are described. This method detects optical transmittance/reflectance, i.e., intensity ratios of the transmitted/reflected light from a sample to the incident monochromatic light in the visible and ...
openaire   +1 more source

Rocket Ultraviolet Spectrophotometry of Comet Kohoutek (1973f)

Science, 1974
Observations of Comet Kohoutek (1973f) in the spectral region between 1200 and 3200 angstroms were made from an Aerobee rocket on 5.1 January 1974 universal time. The strongest features observed were the Lyman alpha line of neutral atomic hydrogen at 1216 angstroms and the hydroxyl (OH) bands at 3090 and 3142 angstroms.
P D, Feldman, P Z, Takacs, W G, Fastie, B, Donn   +3 more
openaire   +2 more sources

Solvents for ultraviolet spectrophotometry

Talanta, 1959
Abstract Mathematical relations are presented showing the effect of light absorption by the solvent on the absorption measurements. A simple modification in the silica-gel adsorption method of purifying iso octane is described that greatly improves the transmittance in the 2000 A region. A procedure of purifying dioxan is also included.
openaire   +1 more source