Selective Speciation of Cr(III) and Cr(VI) by Micro-emulsion Using UV-Vis. Spectrophotometry:
A novel UV-Vis. spectrophotometric detection system is introduced for speciation of Cr(III) and Cr(VI) via interaction with a new micro-emulsion generated between a sweet crude oil as nonpolar phase, H2O as polar phase and C2F4 (R22) gas as disperser. This micro-emulsion is selective for Cr detection and determination via observation of absorption peak at 578 nm wavelength. view more...