Low cost method for copper determination in sugarcane spirits using Photometrix UVC® embedded in smartphone.Analysis of digital images by smartphone was used for copper quantification in sugarcane spirit (cachaça) samples through the formation of blue complex between copper and cuprizone. 
Photometrix UVC
Low cost method for copper determination in sugarcane spirits using Photometrix UVC® embedded in smartphone.Analysis of digital images by smartphone was used for copper quantification in sugarcane spirit (cachaça) samples through the formation of blue complex between copper and cuprizone.  Moreover, different image acquisition procedures (external camera coupled to a smartphone or the smartphone camera) with different regions of interest sizes, distances in image acquisition, and concentration ranges of the calibration curve and the influence of processing the curve in univariate and multivariate modes, by PLS, were evaluated. 
smartphone