Results 211 to 220 of about 22,161 (255)
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High-Resolution, Higher-Order UV/VIS Derivative Spectrophotometry
Angewandte Chemie International Edition in English, 1978AbstractDerivative spectrophotometry has gained increasing importance in the past two years and is currently experiencing vigorous development. Following and introduction the present article provides a review of this extremely effective method. In particular, the advantages ofhigher‐order derivative spectrophotometry (HODS method,n> 2) are discussed
Gerhard Talský
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Spectroscopy Letters, 2007
Abstract This paper describes and compares the results obtained from determination of total iron in abandoned mine drainage (AMD) from selected sites in western Pennsylvania by UV‐visible spectrophotometry (UV‐Vis) and flame atomic absorption spectrophotometry (FAAS).
Mark T. Stauffer +2 more
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Abstract This paper describes and compares the results obtained from determination of total iron in abandoned mine drainage (AMD) from selected sites in western Pennsylvania by UV‐visible spectrophotometry (UV‐Vis) and flame atomic absorption spectrophotometry (FAAS).
Mark T. Stauffer +2 more
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Qualitative aspects of UV-vis spectrophotometry of beta-carotene and lycopene
Journal of Chemical Education, 1989The aim of this paper is to use qualitative aspects of UV-vis spectrophotometry to understand structural behavior of these plyenic pi systems.
Barrie Tan, David N. Soderstrom
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Lead Quantification in Urine Samples of Athletes by Coupling DLLME with UV-Vis Spectrophotometry
Biological Trace Element Research, 2016Urine lead level is one of the most employed measures of lead exposure and risk. The urine samples used in this study were obtained from ten healthy male cyclists. Dispersive liquid-liquid microextraction combined with ultraviolet and visible spectrophotometry was utilized for preconcentration, extraction, and determination of lead in urine samples ...
Hakim Faraji +2 more
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Determination of olmesartan medoxomil in tablets by UV-Vis spectrophotometry
Die Pharmazie, 2007A simple, rapid and reliable UV spectrophotometric method was developed for the determination of olmesartan medoxomil in pharmaceutical dosage forms. The solutions of standard, tablet and synthetic tablet were prepared in acetonitrile and in NaOH-Water. 258 nm and 250 nm were chosen for acetonitrile and for NaOH-Water solutions respectively.
Celebier, M., Altinoz, S.
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Use of UV-Vis Spectrophotometry for Characterization of Carbon Nanostructures: a Review
Theoretical and Experimental Chemistry, 2021A detailed review of the application of the method of absorption spectrophotometry in the ultraviolet and visible regions for the study of carbon nanostructures (CNSs), such as graphene, carbon nanotubes (CNTs), their hybrids, etc., is presented. It is shown that such CNSs have characteristic absorption bands in the UV-Vis regions of the spectrum, and ...
M. Abdolkarimi-Mahabadi +2 more
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Methods Development and Validation of Cefprozil by UV-Vis Spectrophotometry
Asian Journal of Pharmaceutical Analysis, 2021The present work describes which deals to developed and validate a simple, accurate, precise, economically effective US-VIS Spectrophotometric method for the estimation of cefprozil. These methods are developing using 280nm as the λmax of cefprozil respectively. Calibration curves were linear over the concentration ranges of 10-50µg/ml.
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Determination of Trace Elements Using UV–Vis Spectrophotometry
2022The popularity of UV–vis spectrophotometric methods in trace element analysis arises from their modest apparative requirements, possibility of use by a moderately trained analyst, at least in developing countries, an adequate sensitivity and an accuracy often as good as, if not better than, that of other methods in the same range.
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Refractive index-assisted UV/Vis spectrophotometry to overcome spectral interference by impurities
Analytica Chimica Acta, 2021A major challenge hindering the application of techniques like UV/Vis spectrophotometry in determining concentration is spectral interference from contaminants. Since molar absorptivities vary significantly, even minuscule amounts of specific contaminants may cause relatively large errors in UV/Vis spectrophotometry based quantification.
Antony, Airin, Mitra, J.
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Colorimetric Sensor Based AgNPs for the Detection of Cyanide using UV‐Vis Spectrophotometry
ChemistrySelect, 2023Abstract Cyanide (CN − ) is known to be a very harmful ion that may accumulate in the air, soil and water, and become a critical risk to organisms, even at trace levels. Hence, it is very critical to develop sensitive and accurate analytical methods for the determination of ...
Ayça Girgin +4 more
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