FLOW-INJECTION SPECTROPHOTOMETRIC METHOD FOR THE SPECIATION OF ALUMINUM IN RIVER AND TAP WATERS

An automatic flow injection method for aluminium speciation in waters at the nanogram per millilitre level is reported, based on a Pyrocatec hol Violet chelation-ion-exchange method. Data are presented on total reactive aluminium, total monomeric aluminium and non-labile monomeric aluminium. The proposed method is sensitive (detection limit, 5 mug l -1), rapid and reproducible. The results obtained in the analysis of s ix river and tap water samples were consistent with those provided by the manual counterpart of the method.