Application of Anion Exchange for Separation of Metals in Absolute Alcohol-Water-Formic Acid

摘要

The use of absolute alcohol in admixture with formic acid for the selective elution of cations on the ion-exchange resin Dowex 1 * 8 in Cl~- form is investigated. The elution technique was coupled with absorption spectrophotometry and atomic absorption spectrophotometry. The distribution coefficients of metal ions were measured in absolute alcohol-water-formic acid mixture. By applying distribution coefficient data, conditions for column separtion of mixtures have been effected by eluting with absolute alcohol-water-formic acid solution of different compositions. The average recovery for all separations (27 results) were within 95.40% - 98.91% and the standard deviation for all data was 10.15%. The analytical methodology developed in this laboratory was successfully applied for the separation and quantification of metal ions in the microgram range from the real samples collecting from natural water and industrial effluents using UV-visible and AAS technique.