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Trace determination of lead by helium-4 activation analysis
Authors:M E Vargas  J D Batchelor  E A Schweikert
Institution:(1) Center for Chemical Characterization and Analysis, Department of Chemistry, Texas A&M University, 77843-3144 College Station, Texas, USA
Abstract:The determination of lead via 30 MeV4He bombardment to produce the long-lived radioisotope210Po was studied. The validity of the technique was tested by the analysis of a series of NBS glass samples doped with 61 different trace elements at nominal 500 to 1 ppm level concentrations. The measurement sensitivity of alpha counting with surface barrier detectors was evaluated. The detection limit was estimated at 0.1 ppm. The4He-activation technique coupled with agr-counting features a unique combination of sensitivity and accuracy for the trace determination of lead.
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