THIN-LAYER CHROMATOGRAPHIC-SEPARATION, COLORIMETRIC DETERMINATION ANDRECOVERY OF THIOCYANATE FROM PHOTOGENIC WASTE, RIVER AND SEA WATERS

TLC was used to study the retention behaviour of some inorganic anions (SCN-, NO2-, MnO4-, CrO42-, Cr2O72-, MoO42-, Mo7O246-, Fe(CN)(6)(3-) and Fe(CN)(6)(4-)) and metal ions (Fe3+, Zn2+, Cu2+, Cd2+, Co2+, Hg2+, UO22+VO2+, Ag+, Mn2+ and Bi3+) on cellulose, Kieselguhr and their mix tures. Mixed solvent systems containing 0.1 M NH4OH and CH3COCH3 were used as eluents. SCN- separated from other ions was determined by spec trophotometry at 460 nm using acidic FeCl3 solution as chromogenic rea gent. Beer's law was followed up to 11.84 ppm of SCN-. The proposed TL C-colorimetric method was applied to fortified samples of photogenic w aste, river and seawaters.