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Radioactivity Content of Building Materials Used in Kutahya Province, Turkey.

Radioactivity concentrations of primordial radionuclides Ra-226, Th-232 and K-40 for 31 samples of seven different types of construction materials used in Kütahya Province, Turkey, were analyzed using NaI(Tl) gamma spectroscopy. Ra-226, Th-232 and K-40 activities of all samples ranged between <2.0 and 81.3 ± 1.5, <1.0 and 24.8 ± 0.5 and <7.8 and 819.1 ± 5.5 Bq kg -1, respectively. Radium equivalent activity and Gamma index of sampled building materials were calculated and presented. All results were found to be below the safety limits.