Abstract
This paper reports a new and sensitive technique for the fractionation of aqueous aluminum in natural waters by cation-exchange resin, coupled with chloroform extraction/8-hydroxyquinoline fluorimetric determination. Four fractions of aluminum, including total reactive-AlT, total monomeric-Ala, labile monomeric- Ali (inorganic form), and non-labile monomeric (organic form) Alo can be determined directly by the proposed method. The acidic soluble Alr was calculated as the difference between total reactive AlT and total monomeric Al (AlT-Ala). Compared with the widely used Driscoll's method (MIBK extraction-GF/AAS), the proposed method possesses some distinct advantages: 1. the toxic forms of aluminum (labile monomeric Al) retained by the resin can be determined directly by fluorimetry. 2. the sensitivity and precision of this method are better than those of Driscoll's. 3. hazardous organic solvent MIBK is no longer used. Application of this method to fractionate aluminum to fifty natural water samples, collected from different areas in China, has been carried out. The results obtained by this method are compared with those by Driscoll's and are found to be in good agreement.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
