1985 Volume 34 Issue 1 Pages 48-52
A new ion exchanger named "xanthogenized Sepharose" (X-Sepharose) was prepared by the reaction of Sepharose CL-6B with carbon disulfide in aqueous sodium hydroxide solution. Mercury(II), copper(II), lead(II), cadmium(II), zinc(II), and nickel(II) could be collected quantitatively from 50 ml of 1×10-5 mol 1-1 solution of each metal salts over the pH range of 1.110.2, 1.910.1, 4.25.4, 5.19.7, 6.18.2, and 6.19.2, respectively, by stirring the solution with 0.1g of X-Sepharose for 30 min at room temperature. Collection of mercury and copper from 1 mol 1-1 solution of sodium nitrate, sodium chloride, and sodium bromide were quantitative, but those of other metals were not. Collection of metals were interfered in the presence of EDTA. Metals except for mercury could also be collected quantitatively from 500 ml of 1×10-8 mol 1-1 metal solution by batch method with 0.1 g of X-Sepharose or by passing the solution through the column packed with 0.3 g of X-Sepharose, and could be recovered from the X-Sepharose by dissolving it in concentrated hydrochloric acid or concentrated nitric acid by heating.
