Smartphone-assisted colorimetric determination of uranyl ions in aqueous solutions

Abstract

A convenient and portable smartphone-assisted method for the colorimetric detection of uranyl ions (UO22+) in aqueous solutions was proposed taking rifampicin and 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (Br-PADAP) as chromogenic agents. The addition of...

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“…62 Lei et al reported on the determination of uranyl ions in aqueous solutions by a smartphone-assisted colorimetric method. 63 Photographs of samples taken with smartphones can be processed instantly with smartphone applications, and accurate data such as RGB (red, green, blue), 64,65 CMYK (cyan, magenta, yellow, black) values 66 and other detailed data can be obtained. 67 Since the colour change of a sample shows a linear relationship with the substance content, the corresponding concentration can be determined from the colour data.…”

“…63 Photographs of samples taken with smartphones can be processed instantly with smartphone applications, and accurate data such as RGB (red, green, blue), 64,65 CMYK (cyan, magenta, yellow, black) values 66 and other detailed data can be obtained. 67 Since the colour change of a sample shows a linear relationship with the substance content, the corresponding concentration can be determined from the colour data. 68,69 Compared to simply observing colorimetric results with the naked eye, more accurate results can be obtained by using a smartphone.…”