Abstract
The sorption behavior of a number of metal ions was investigated on thiourea-impregnated silica gel G and alumina layers with aqueous HCl and acetone—HCl mobile phases. The mobility of the metal ions was examined under varying experimental conditions of mobile phase pH, effect of concentration of thiourea as the impregnant, and also the effect of solvent composition in acetone—HCl mixtures. The migration of metal ions depends on the solubility of metal salt, adsorption and precipitation of the ions in the network of the adsorbent. On impregnated silica gel G layers, for many ions, maximum adsorption occurs at pH 2 and above. 0.1 m and 0.2 m thiourea-impregnated alumina layers were found the most suitable for metal ion separations. For some metal ions, comparative study was made with thiourea and urea as the impregnant. Quantitative separations of Pb2+ and Hg2+ from some other metal ions and synthetic alloys were also carried out.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: JPC - Journal of Planar Chromatography - Modern TLC
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
