Determination of silver traces in air by neutron activation analysis |
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Authors: | A. Albini A. Cesana M. Terrani |
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Affiliation: | (1) CISE, Segrate, C.P. 3986 Milano, (Italy);(2) Politecnico, Istituto di Ingegneria Nucleare, Milan, (Italy) |
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Abstract: | A non-destructive system for determination of silver traces in air particulates collected on cellulose filters is described, based on neutron activation followed by110Ag β− counting instead of the 657.7 keV γ-ray. The determination limit (for 10% confidence limit) is estimated to be about 10−9 g. The method is easily applicable to the determination of silver in cloud seeding experiments, since the filters themselves provide a consistent and fairly uniform source and samples are collected in general far from industrial areas, where the concentration of possible interfering elements in air is reasonably low. |
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