Simple-to-use and portable device for free chlorine determination based on microwave-assisted synthesized carbon dots and smartphone images
- Uriarte, Damián Andrés
- Vidal, Ezequiel Martin
- Canals, A.
- Domini, Claudia Elizabeth
- Garrido, Mariano Enrique
DOIAbstract
A new portable and simple 3D printed device was designed for free chlorine determination in water samples. The analytical method was based on the quenching caused by free chlorine on the fluorescence emission of the carbon dots (CD) synthesized from citric acid and urea. The fluorescence was captured through the camera of a smartphone, which was coupled to the 3D printed device, and the images were processed using the RGB system by the ImageJ 1.51q software. The proposed method was selective and precise (RSD% 4.6, for n = 6), and the trueness of the results was evaluated by comparing the results obtained with those recovered by the spectrophotometric method 4500-Cl G (standard method), with good agreement between them. Moreover, the remarka...
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