Using a multistandard color chart guide for digital cameras to detect total uranium in drinking water using arsenazo III: an approach

The present study developed a multistandard color chart for detecting uranium (U) by arsenazo III using digital cameras with color tool measurements and compared it with conventional methods. The color chart is red to dark red as monochromatic for cameras. The detection limit is 5 ng/mL using a preconcentration factor of 100, which is well below WHO guidelines. The digital cameras showed lower bias and better trueness compared to the conventional methods. This provides an advantage in portability, ease of analysis, and no need for high-end instruments/radiochemical laboratories for U analysis in drinking water.