Περίληψη σε άλλη γλώσσα
THE LEVEL OF INDOOR RADON CONCENTRATIONS IN APARTMENT DWELLINGS IN THE CITY OF THESSALONIKI, NORTH GREECE, THE NATURAL RADIOACTIVITY AND EMENATING RADON FROMBUILDING MATERIALS , AS WELL AS THE RADON EXHALATION FROM THE SOIL , THE RADON CONCENTRATION IN PU BLIC WATER SUPPLY AND OUTDOORS WERE STUDIED , IN ORDERTO ESTIMATE THE RADON ENTRY INTO A TYPICAL ONE-STORY HOUSE. THE INDOOR RADONCONCENTRATIONS RANGED BETWEEN 8 AND 143 BQ.M-3(ANNUAL 30.3 =- 22.7 BQ.M-3) AND WERE AFFECTED BY RAINFALL AND CHANGES OF VENT ILATION RATE (THE ATMOSPHERIC TEMPERATURE AND THE AGE OF BUILDING). SIGNIFICANT HIGH CONCENTRATIONS OF RA-226 UP TO 140 BQ.KG-1 WERE MEASURED IN GREEK CEMENT TYPE PORTLAND35/II DUE TO THE FLY ASH ADDED UP TO 20% , BUT THE AMOUNT OF RADON EMANATING REDUCED ACCORDING TO FLY ASH ADDITIVES. RADON IS DOMINANTLY ORIGINATED FROM CONCRETE WITH EXHALATION RATE AT THE LEVEL OF 5.61+- 2.32 BQ.M-2.H-1 THE RADON EXHALATION RATE FROM A SURFACE IN DEPTH 70 CM INTO THE SOIL W ...
THE LEVEL OF INDOOR RADON CONCENTRATIONS IN APARTMENT DWELLINGS IN THE CITY OF THESSALONIKI, NORTH GREECE, THE NATURAL RADIOACTIVITY AND EMENATING RADON FROMBUILDING MATERIALS , AS WELL AS THE RADON EXHALATION FROM THE SOIL , THE RADON CONCENTRATION IN PU BLIC WATER SUPPLY AND OUTDOORS WERE STUDIED , IN ORDERTO ESTIMATE THE RADON ENTRY INTO A TYPICAL ONE-STORY HOUSE. THE INDOOR RADONCONCENTRATIONS RANGED BETWEEN 8 AND 143 BQ.M-3(ANNUAL 30.3 =- 22.7 BQ.M-3) AND WERE AFFECTED BY RAINFALL AND CHANGES OF VENT ILATION RATE (THE ATMOSPHERIC TEMPERATURE AND THE AGE OF BUILDING). SIGNIFICANT HIGH CONCENTRATIONS OF RA-226 UP TO 140 BQ.KG-1 WERE MEASURED IN GREEK CEMENT TYPE PORTLAND35/II DUE TO THE FLY ASH ADDED UP TO 20% , BUT THE AMOUNT OF RADON EMANATING REDUCED ACCORDING TO FLY ASH ADDITIVES. RADON IS DOMINANTLY ORIGINATED FROM CONCRETE WITH EXHALATION RATE AT THE LEVEL OF 5.61+- 2.32 BQ.M-2.H-1 THE RADON EXHALATION RATE FROM A SURFACE IN DEPTH 70 CM INTO THE SOIL WAS ASSESSED AT 20.8+-9.2BQ.M-2.H-1 (MEAN ANNUA L VALUE) AND WERE AFFECTED BY RAINFALL AND AIR TEMPERATURE . THE RADON CONCENTRATIONS IN PUBLIC WATER SUPPLY RANGED BETWEEN 1.6 AND 11.7 KBQ.M-3 (ANNUAL 4.96+-2.4 KBQ.M-3). THE OUTDOOR RADON CONCENTRATIONS SEEM TO BE AFFECTED BY THE RELATIVE HUMIDITY AND A TMOSPHERIC POLLUTION , ESPECIALLY SMOKE. THE MEAN ANNUAL CONTRIBUTION FACTOR OF EACH RADON SOURCE AT A TYPICAL ONE-STORY HOUSE FOUND TO BE 37+-18% ATTRIBUTED TO THE SOIL , 38+-15% TOTHE ATMOSPHERE, 20+-9% TO THE BUILDING MATERIALS AND 6+-3% TO THE PUBLIC WATER SUPPLY.
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