Determination of acid dissociation constants of Alizarin Red S, Methyl Orange, Bromothymol Blue and Bromophenol Blue using a digital camera
Ahmed A. Shalaby, Ashraf A. Mohamed
Abstract
values were calculated from the RGB colour absorbance-pH relationship using graphical and mathematical methods, and with the aid of DATAN software. For the four studied dyes, the results obtained from digital image analysis were in excellent agreement with the data of sophisticated spectrophotometers and the previously reported literature data.
Topics & Concepts
Bromophenol blueBromothymol blueALIZARIN REDChemistryOrange (colour)Methyl orangePhotochemistryChromatographyOrganic chemistryStainingFood sciencePathologyPhotocatalysisCatalysisMedicineElectrochemical sensors and biosensorsWater Quality Monitoring and AnalysisAdvanced Chemical Sensor Technologies