Results 1 to 10 of about 445,020 (270)
Simultaneous determination of moxifloxacin and cefixime by first and ratio first derivative ultraviolet spectrophotometry [PDF]
Chemistry Central Journal, 2012 Background The new combination of moxifloxacin HCl and cefixime trihydrate is approved for the treatment of lower respiratory tract infections in adults.
Attimarad Mahesh +5 more
doaj +5 more sources
Simultaneous estimation of metformin and pioglitazone by ultraviolet spectrophotometry.
Indian J Pharm Sci, 2010 This work deals with the simultaneous estimation of metformin hydrochloride and pioglitazone hydrochloride in a bilayered tablet dosage form, without prior separation by two techniques. The methods employed are derivative spectrophotometery and Q analysis.
Goswami L, Mukhopadhyay S, Durgapal S.
europepmc +6 more sources
Ultraviolet Spectrophotometry of Lignin Revisited: Exploring Solvents with Low Harmfulness, Lignin Purity, Hansen Solubility Parameter, and Determination of Phenolic Hydroxyl Groups. [PDF]
ACS Omega, 2022 In this article, we explored solvents with lower harmfulness than established systems for UV spectrophotometry of lignin. By measuring the absorptivity in DMSO solvent at 280 nm, the purity of the lignin samples was addressed and compared with Klason and
Ruwoldt J, Tanase-Opedal M, Syverud K.
europepmc +2 more sources
Multivariate Analysis of Perfumes by Ultraviolet Spectrophotometry
Journal of the Brazilian Chemical Society, 2015 An efficient, fast and cost-effective method for detecting adulteration in perfumes by UV spectroscopy and multivariate analysis is proposed. Classification of perfumes, either as original or fake, was accomplished with the spectroscopic data using chemometric techniques such as principal component analysis (PCA), soft independent modeling of class ...
Gomes, Clêrton L. Gomes +5 more
semanticscholar +6 more sources
Dimetridazole in Feeds by Ultraviolet Spectrophotometry [PDF]
Journal of AOAC INTERNATIONAL, 1965 Abstract Dimetridazole absorbs strongly in the ultraviolet region of tbe spectrum. This property was vised to develop an analytical procedure for the drvig in feeds. In the procedure, a portion of feed is extracted in hot methanol, chromatographcd in methanol and in aqvieous solutions on alumina to remove interferences, and read on an ...
Athanasios C. Daftsios
openaire +3 more sources
Quantitative Ultraviolet Vapor Spectrophotometry [PDF]
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 ...
R. A. Friedel
openaire +3 more sources
Noise analysis for CCD-based ultraviolet and visible spectrophotometry [PDF]
Applied Optics, 2015 Full-text not yet available due to publisher embargo.We present the results of a detailed analysis of the noise behavior of two CCD spectrometers in common use, an AvaSpec-3648 CCD UV spectrometer and an Ocean Optics S2000 Vis spectrometer. Light sources
Davenport, John +3 more
core +2 more sources
Diagnosis of Smith-Lemli-Opitz syndrome by ultraviolet spectrophotometry [PDF]
Brazilian Journal of Medical and Biological Research, 2003 Smith-Lemli-Opitz syndrome (SLOS) is an autosomal recessive disorder due to an inborn error of cholesterol metabolism, characterized by congenital malformations, dysmorphism of multiple organs, mental retardation and delayed neuropsychomotor development ...
F.B. Scalco +4 more
doaj +2 more sources
Drug Analytical Research, 2017 Analytical techniques based on Ultraviolet (UV) spectrophotometry are widely used in pharmaceutical analysis, because they are simple and inexpensive. The choice of pH is critical in the development of univariate methods for pharmaceutical quantitation ...
Fabiana E.B. da Silva +5 more
doaj +10 more sources
Determination of Phenolic Hydroxyl Groups in Technical Lignins by Ionization Difference Ultraviolet Spectrophotometry (∆ε-IDUS method) [PDF]
, 2016 The amount of hydroxyl groups, particularly phenolic, is one of the most important parameters in lignins, as it is an indicator of lignin reactivity. Ultraviolet (UV) Spectrophotometry is a simple and inexpensive method for determining phenolic hydroxyls
Ahola, Juha +6 more
core +2 more sources