Determination of the active layer in iodine-sampled charcoal cartridges

Abstract

This paper presents a technique of determining the active layer in charcoal cartridges after iodine sampling. The main tool used in this research is an effciency transfer for nuclide activity measurements. The results reveal that this technique has some advantages such as easy implementation, low cost,  and spending little time. However, in this method, certain conditions must be met including the large sample size, equal sampling conditions, and the distribution of iodine in the active layer is assumed to be uniform.

Keywords: Air sampling; charcoal cartridge; ETNA; efficiency curve