A fully-printed electrochemical platform for assisted colorimetric detection of phosphate in saliva: Greenness and whiteness quantification by the AGREE and RGB tools

Herein, we report the environmental impact quantification of a newly developed fully printed electrochemical device to assist colorimetric detection phosphate in saliva. The evaluation analytical procedure was performed according principles Green Analytical Chemistry and White Chemistry. standard method for relies on reaction between molybdate presence antimony potassium tartrate ascorbic acid, using strong acid conditions high volumes reagents (100–500 mL). To deliver an eco-friendly method, have combined screen-printed electrode with liquid electrolyte battery inkjet-printed conductive paths develop flexible polymer substrate avoiding use small amount reagents. sensor first optimized saliva, allowing limit equal 26 µM satisfactory repeatability (relative deviation value 7.5%). Finally, AGREE RGB assessment tools were applied quantitative proposed reference agreement principles. results demonstrated lower sensor, as well suitability this novel approach