Some aspects regarding the use of radioactivity standards and measurements in various applications are emphasized. The definitions of the specific notions, as they are used in the field of metrology, a short history of the development of radioactivity standards and of the first traceability assurance achievements are presented. The main radioactivity measurement fields, requiring standards are ...

In this study, natural and artificial radioactivity concentration in Agaricus bispora (nourished mushroom) and their composts, Cantharellus cibarius and Coprinus micaceuc (wild species) were determined. Samples were collected from Sahne and two kinds of wild mushroom species from Songhor Koliai township gardens all located in Kermanshah Province were collecte...