Results 251 to 260 of about 52,556 (305)

Some problems in infrared spectrophotometry

Journal of Molecular Structure, 1973
Abstract : It is well known that infrared intensity measurements are not very accurate. Nevertheless modern infrared spectrophotometers do exhibit good reproducibility, at least over small time intervals. Failure to obtain closer inter-laboratory agreement must result from systematic instrumental errors and faulty experimental technique.
R.N. Jones, D. Escolar, J.P. Hawranek, P. Neelakantan, R.P. Young   +4 more
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Quantitative Determination of Tenoxicam by Infrared Spectrophotometry

Analytical Letters, 1997
Abstract The purpose of this study was the quantitative determination of solid dosage forms containing tenoxicam (TNX) by IR spectrophotometry, using the KBr disc technique. Dehydrocholic acid (DHCA) was used as the internal standard. The specific absorption bands at 1420 cm−1 and 1705 cm−1 were chosen for TNX and DHCA, respectively.
Dincol, F, Atay, O
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Determination of HOD by infrared spectrophotometry

Talanta, 1978
The concentration of HOD in biological fluids is measured by using vacuum distillation, followed by infrared spectrophotometry.
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Studies of Cryptococcus Polysaccharides by Infrared Spectrophotometry

Journal of Infectious Diseases, 1959
Infrared spectrums of isolated capsular polysaccharides have been used to segregate types within certain groups of encapsulated bacteria. The results of spectral typing of purified pneumococcal polysaccharides (1) and of crude klebsiella polysaccharides (2) have paralleled the results of serological typing.
S, LEVINE, E E, EVANS, P W, KABLER
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Quantitative Determination of Fluconazole by Infrared Spectrophotometry

Analytical Letters, 1996
Abstract The purpose of the study was the quantitative determination of fluconazole by IR spectrophotometry which was realized by the application of the KBr disc technique. In this study dehydrocholic acid was used as internal standard. The absorption bands at 960 and 675 cm−1 were chosen for fluconazole and 1705 cm−1 for dehydrocholic acid.
Atay, O, Selcuk, F
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Near-Infrared Spectrophotometry

1993
Light absorption in tissue is very limited in the near-infrared range; thus brain tissue may be transilluminated effectively using standard technology. Measurements of brain oxygenation and circulation can be obtained at the cotside. Although the techniques are still under development and the application in newborn infants is still limited, the use of ...
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Quantitative Analysis by Infrared Spectrophotometry

Applied Spectroscopy Reviews, 1970
Abstract To complement some current references [1,2] on quantitative infrared analysis, the following goals have been set for this paper: To assess the recent history of quantitative infrared analysis. To describe and illustrate instrumentation and techniques for measuring infrared absorbance simply but precisely.
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Near-infrared spectrophotometry of Titan

Icarus, 1975
Several unusual features in the near-IR spectrum of Titan are examined. Observations during four apparitions establish the reality of the S(1) absorption at 8150.7 A, but the existence of the S(O) absorption at 8272.7 A will require further sightings to become definitively established. These two features are particularly important, as they bear on the
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Nonlinear multicomponent analysis by infrared spectrophotometry

Analytical Chemistry, 1983
Les techniques des moindres carres, matricielles, pour les analyses de systemes n'obeissant pas a la loi de Beer Lambert, sont developpees et testees sur des alcanes legers.
Mark A. Maris, Chris W. Brown, Donald S. Lavery   +2 more
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Deuterium analysis by infrared spectrophotometry

Talanta, 1960
Abstract An improved method for the infrared spectrophotometric determination of deuterium is described.
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