Activity measurements of Sr-90 and Cs-137 in spiked solutions of milk. Results of a national intercomparison in Italy.
A national intercomparison was organized by ENEA for activity measurements of 90Sr and 137Cs in spiked solutions of milk. The participants in the intercomparison were the laboratories belonging to the Italian network for control of radioactivity in the environment. The purpose of these measurements was to check the reliability of measurement procedures and experimental means as routinely used by each participant. This first intercomparison showed appreciable discrepancies among the participants and this was due both to improper procedures and non correct calibrated spectrometers. Soon after a second intercomparison was carried out to check to what extent the previous results were reproducible among the various participants. Methods and results are discussed.
De Felice
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Laboratorio di Metrologia delle Radiazioni Ionizzanti, Roma, Italy.
Laitano
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RF
Piermattei
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D000818:Animals; D002417:Cattle; D002588:Cesium Radioisotopes / Q000032:analysis*; D007558:Italy; D007753:Laboratories; D008892:Milk / Q000032:analysis*; D011874:Radiometry / Q000379:methods*; D012016:Reference Values; D013326:Strontium Radioisotopes / Q000032:analysis*
D002588:Cesium Radioisotopes; D013326:Strontium Radioisotopes