Measurement of radioactivity levels of liquid milk samples in Kütahya, Turkey

Background: milk is a fundamental part of the human daily diet, so radioactivity concentrations in milk must have been controlled regularly. in this study, radiation activities were measured in 12 ultra-high temperature (uht) milk samples collected in kütahya, turkey, in august 2021. materials and methods: radium (ra-226), thorium (th-232) and potassium (k-40) values were determined by using the canberra 3x3 nai (tl) gamma spectroscopy method in 8 samples, and radon (rn-222) activity measurements have been conducted in 12 samples using the e-perm method. results: radium (ra-226), thorium (th-232) and potassium (k-40) levels are measured as < mda (2.28 bq/kg), < mda (2.53 bq/kg), 40.43 ± 2.25 to 53.31 ± 2.30 bq/kg, respectively. radon (rn-222) concentrations were determined by the e-perm system between 0.46 ± 0.02 and 2.01 ± 0.05 bq/l with an average of 1.11 ± 0.03 bq/l. conclusions: annual ingested radiation doses were calculated using radioactivity levels for different age groups as a result of milk consumption. ingestion dose levels are below the worldwide average values given in the unscear report. it has been observed that the results are below the safety limits.