AN AUTOMATIC METHOD FOR FRACTIONATION AND DETERMINATION OF ALUMINUM SPECIES IN FRESH-WATERS
An automatic method for fractionation and determination of aluminum species in natural waters is described. The method is an automatic modification of the catechol violet method of Dougan and Wilson (1974). The fractionation step is an automatic modification of the ion-exchange procedure suggested by Driscoll (1980). The method yields three aluminum fractions: total monomeric aluminum (reactive aluminum), non-labile (organic) monomeric aluminum and labile (inorganic) monomeric aluminum. This method has been adapted to the Technicon Monitor 650.