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Radiation Protection Dosimetry 55:299-304 (1994)
© 1994 Oxford University Press
Radionuclide Content in Some Building Materials and ?heir Indoor Gamma Dose Rate
Radionuclide contents of materials used in the cement industry and natural raw building materials in Syria have been determined by gamma spectrometry. Samples crushed and counted in Marinelli beaker bricks, ceramic, fireclay and phosphogypsum showed higher levels of radioactivity. Sand, cement, marble and limestone contained lower values. All samples fulfilled the criteria set up by OECD except the phosphogypsum. The absorbed gamma dose rate in indoor air was estimated to be 25.2 nGy.h-1: this value has been corrected for build-up, windows and door factors.
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