Determination of silver traces in air by neutron activation analysis
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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.
KeywordsNeutron Activation Neutron Activation Analysis Decay Constant Decay Curve Silver Concentration
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