OBJECTIVES To investigate whether sputum cytology can be used to monitor epithelial cell changes in groups at high risk of lung cancer from exposure to radiation. METHODS Dysplasia of bronchial cells was investigated by means of sputum cytology in a group of 434 underground miners. 100 of them were not exposed, and 334 were exposed to 222Rn progeny at cumulative exposures < 450 working level ...

Activity concentration of the 222Rn radionuclide was determined in drinking water samples from the Sothern Greater Poland region by liquid scintillation technique. The measured values ranged from 0.42 to 10.52 Bq/dm3 with the geometric mean value of 1.92 Bq/dm3. The calculated average annual effective doses from ingestion with water and inhalation of this radionuclide escaping from water were 1...

Low background miniaturized proportional counters as developed for the GALLEX solar neutrino experiment can be applied to the detection of radioactive noble gas nuclides at very low activities. We have developed an apparatus that allows the activity of trace amounts of isotopes of the four noble gases Ar, Kr, Xe and Rn to be measured. The technique includes contamination-free chromatographic pu...

Five locations and five samples of materials from the phosphogypsum waste stack near Zgrpolci locality, in vicinity city Veles, were checked for their radon concentrations air exhalation rate. The accumulation method using AlphaGUARD DF2000 device was used specific rate determinations as well air. activity 222Rn at 5 different sampling anthropogenically introduced phosphogypsym locality ranged ...

The amount of radioactive isotopes in submerged Ceratophyllum demersum plants samples were estimated using passive track detector CR-39. collected from four selected sites along the Tigris River Baghdad city, on a monthly basis for one complete year 2019. Certain factors like radon concentration (Bq.m-3), radium content (Bq.kg-1) and uranium (ppm) evaluated. average values 222Rn level, 226Ra 23...