Digital camera vs visible spectrophotometer based uranium colour chart analysis via arsenazo III method harmonisation prospect on colour matching technique

This study presents a new method for harmonising between digital cameras and visible spectrophotometers via uranium-standardized colour charts of reported uranyl-arsenazo-III complexes with respect to drinking water quality. The photographic capture is based on additive models for red, green, and blue values. For harmonisations, colour space technology is necessary and the delta E mathematical tool was used. The study revealed on both measurements were proximate. The matched camera colour chart detection limit is 3.59 ng/mL in drinking water, which is possible with preconcentration factor of 100. This study shows the analytical validation of precision closeness (99.1%) and accuracy closeness (99.4%).