Colorimetría mediante fotografía digital para la determinación de azul de metileno: fotodegradación catalizada con TiO2

Colorimetría mediante fotografía digital para la determinación de azul de metileno: fotodegradación catalizada con TiO2

The students of a General Chemistry class made absorbance measurements in different concentration methylene blue solutions, through the color analysis of solutions pictures. They obtained a calibration curve with a R2=0.9904 that was used for the concentration determination of dye samples exposed to...

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Bibliographic Details
Published in:ACI Avances en Ciencias e Ingenierías Vol. 10; no. 1
Main Authors: Pablo A. Cisneros-Pérez, Ángel S. Intriago-Mendoza, Jean P. Ramos-Galarza
Format: Journal Article
Language:English
Published: Universidad San Francisco de Quito USFQ 01-12-2018
Subjects:
colorimetry
enviromental chemistry
general chemistry
methylene blue
photodegradation
tio2
Online Access:Get full text
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Summary:The students of a General Chemistry class made absorbance measurements in different concentration methylene blue solutions, through the color analysis of solutions pictures. They obtained a calibration curve with a R2=0.9904 that was used for the concentration determination of dye samples exposed to sunlight in variable degradation times with TiO2 as catalyst. The colorimetric method essayed is easy to use and it may be applied in laboratories where a UV-Vis spectrophotometer is not available.
ISSN:1390-5384
DOI:10.18272/aci.v10i1.834