Results 1 to 10 of about 529,325 (289)

Estratégias para aumento de sensibilidade em espectrofotometria UV-VIS Strategies to increase sensitivity in UV-VIS spectrophotometry [PDF]

open access: goldQuímica Nova, 2004
Spectrophotometry is one of the most widespread analytical techniques due to its simplicity, reliability, and low-cost instrumentation for both direct measurements and coupled to other techniques or processes such as chromatography, electrophoresis and ...
Fábio R. P. Rocha   +1 more
doaj   +2 more sources

Luwak Coffee Classification Using UV-Vis Spectroscopy Data: Comparison of Linear Discriminant Analysis and Support Vector Machine Methods [PDF]

open access: yesAceh International Journal of Science and Technology, 2018
UV-Vis spectroscopy has been used as a promising method for coffee quality evaluation including in authentication of several high-economic coffee types.
Diding Suhandy, Meinilwita Yulia
doaj   +4 more sources

Adjusting UV‐Vis Spectrum of Alizarin by Insertion of Auxochromes [PDF]

open access: yesChemistryOpen
First synthesized in 1868, alizarin became one of the first synthetic dyes and was widely used as a red dye in the textile industry, making it more affordable and readily available than the traditional red dyes derived from natural sources.
Zahra Noori   +3 more
doaj   +2 more sources

Reseña libro: UV-Vis Luminiscencie imaging techniques /Técnicas de luminiscencia UV-Vis

open access: yesGe-conservación, 2021
Reseña: UV-Vis Luminiscencie imaging techniques /Técnicas de luminiscencia UV-Vis Marcello Picollo, Maartje Stols-Witlox, Laura Fuster-López (Eds.). Conservation 360º, Editorial Universitat Politècnica de València, 2019 ISBN: 978-84-9048-828-7 ...
Miquel Ángel Herrero-Cortell
doaj   +1 more source

How to Read and Interpret UV-VIS Spectrophotometric Results in Determining the Structure of Chemical Compounds

open access: yesIndonesian Journal of Educational Research and Technology, 2022
UV-VIS spectrophotometry is one of the methods used to perform qualitative and quantitative analysis of organic and inorganic compounds. However, until now there has been no further research that studies and describes the detailed analysis of UV-VIS ...
Restiani Alia Pratiwi   +1 more
doaj   +1 more source

Chemometrics-Assisted UV-Vis Spectrophotometry for Quality Control of Pharmaceuticals: A Review

open access: yesIndonesian Journal of Chemistry, 2023
Spectroscopic method in the UV-Vis region is considered the most molecular spectrometric method for content determination of a single component. However, a lot of pharmaceutical dosage forms comprise two or more components which lead to peak overlapping.
Laela Hayu Nurani   +6 more
doaj   +1 more source

Applications of Online UV-Vis Spectrophotometer for Drinking Water Quality Monitoring and Process Control: A Review

open access: yesSensors, 2022
Water quality monitoring is an essential component of water quality management for water utilities for managing the drinking water supply. Online UV-Vis spectrophotometers are becoming popular choices for online water quality monitoring and process ...
Zhining Shi   +4 more
doaj   +1 more source

Advances on Water Quality Detection by UV-Vis Spectroscopy

open access: yesApplied Sciences, 2020
Water resources are closely linked to human productivity and life. Owing to the deteriorating water resources environment, accurate and rapid determination of the main water quality parameters has become a current research hotspot.
Yuchen Guo   +3 more
doaj   +1 more source

Synthesis, Structure, and UV–Vis Characterization of Antimony(III) Phthalocyanine: [(SbPc)2(Sb2I8)(SbBr3)]2

open access: yesMolecules, 2022
A new antimony(III)–phthalocyanine complex with the formula of [(SbPc)2(Sb2I8)(SbBr3)]2 has been obtained in the reaction of pure antimony powder with phthalonitrile under the oxidation conditions by iodine monobromide vapors. The complex crystallizes in
Ryszard Kubiak, Jan Janczak
doaj   +1 more source

VinegarScan: A Computer Tool Based on Ultraviolet Spectroscopy for a Rapid Authentication of Wine Vinegars

open access: yesChemosensors, 2021
Ultraviolet-visible (UV-vis) spectroscopy has shown successful results in the last few years to characterize and classify wine vinegar according to its quality, particularly those with a protected designation of origin (PDO).
Rocío Ríos-Reina   +5 more
doaj   +1 more source

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