Acid digested brain containing 4 mg added 27Al was ashed at 1000°C to prepare an Al2O3 target for accelerator mass spectrometry (AMS) analysis of 26Al. A glass-like material usually resulted which was thought to be aluminum (Al) oxyphosphate. The separation of Al and phosphate was investigated. Al, but not phosphate, was bound by a cation exchange resin (AG 50-X8). Hydrofluoric acid eluted the Al from the resin. Removal of phosphate from acid digested brain by this method produced an amorphous material after ashing that was easier to recover from the porcelain crucible and had a higher AMS beam current. This procedure to separate Al from phosphate may have utility in other applications.
Digital Object Identifier (DOI)
We acknowledge the support given by the US EPA (R 825357) and NIH (5 T32 ES07266 supporting RDB).
Brauer, Russell D.; Robertson, J. David; Sharma, Pankaj; and Yokel, Robert A., "Aluminum and Phosphorus Separation: Application to Preparation of Target from Brain Tissue for 26Al Determination by Accelerator Mass Spectrometry" (1999). Pharmaceutical Sciences Faculty Publications. 179.