en Radiation Biology Radiation Biology تحقيق بديع Original Research <b><font face="TimesNewRoman,Bold" size="3"><p align="left">ABSTRACT </p><p align="left" ><p align="left">Background: </p><p align="left">and soils with which it comes in contact. There is dual exposure from radon in water i.e. due to</p><p align="left">inhalation of the radon released from the water into the ambient air and through ingestion when</p><p align="left">water is used for drinking. As radon contaminated water adversely affects the health, it is</p><p align="left">therefore fundamental from health and hygiene point of view to measure radium concentration</p><p align="left">and radon exhalation rates in water.</p></font><font face="TimesNewRoman" size="3">Dissolved radon is contained in natural water due to primordial uranium in rocks</font><b><font face="TimesNewRoman,Bold" size="3"><p align="left">Materials and Methods</p><p align="left">radium concentration and radon exhalation rate in water samples collected from various thermal</p><p align="left">springs. The alpha tracks registered were counted by optical microscope at suitable magnification</p><p align="left">and converted into radium concentration and subsequently radon exhalation rates were measured.</p></font><font face="TimesNewRoman" size="3">: LR-115, Type- II plastic track detectors were used to measure the</font><b><font face="TimesNewRoman,Bold" size="3"><p align="left">Results: </p><p align="left">m</p><p align="left">varied from 5.65 Bq l</p><p align="left">exhalation rates varied from 2.37 mBq kg</p><p align="left">± 0.36 mBq kg</p></font><font face="TimesNewRoman" size="3">The radon concentration emanated from water samples (air borne) varied from 84 Bq</font><font face="TimesNewRoman" size="1">-3 </font><font face="TimesNewRoman" size="3">to 827 Bq m</font><font face="TimesNewRoman" size="1">-3 </font><font face="TimesNewRoman" size="3">with an average of 429 ± 12.72 Bqm</font><font face="TimesNewRoman" size="1">-3 </font><font face="TimesNewRoman" size="3">and the dissolved radon concentration</font><font face="TimesNewRoman" size="1">-1 </font><font face="TimesNewRoman" size="3">to 55.66 Bq l</font><font face="TimesNewRoman" size="1">-1 </font><font face="TimesNewRoman" size="3">with an average of 28.88± 0.85 Bq l</font><font face="TimesNewRoman" size="1">-1</font><font face="TimesNewRoman" size="3">. The radon mass</font><font face="TimesNewRoman" size="1">-1 </font><font face="TimesNewRoman" size="3">hr</font><font face="TimesNewRoman" size="1">-1 </font><font face="TimesNewRoman" size="3">to 23.39 mBq kg</font><font face="TimesNewRoman" size="1">-1 </font><font face="TimesNewRoman" size="3">hr</font><font face="TimesNewRoman" size="1">-1 </font><font face="TimesNewRoman" size="3">with an average of 12.14</font><font face="TimesNewRoman" size="1">-1 </font><font face="TimesNewRoman" size="3">hr</font><font face="TimesNewRoman" size="1">-1 </font><font face="TimesNewRoman" size="3">and surface exhalation rates from 52.34 mBq m</font><font face="TimesNewRoman" size="1">-2 </font><font face="TimesNewRoman" size="3">hr</font><font face="TimesNewRoman" size="1">-1 </font><font face="TimesNewRoman" size="3">to 515.29 mBq m</font><font face="TimesNewRoman" size="1">-2 </font><font face="TimesNewRoman" size="3">hr</font><font face="TimesNewRoman" size="1">-1</font><font face="TimesNewRoman" size="3"><p align="left">with an average of 267.36 ± 7.93 from different thermal spring water samples.</p><p align="left">concentration varied from 0.30 Bq l</p></font><b><font face="TimesNewRoman,Bold" size="3"> </font><font face="TimesNewRoman" size="3">The radium</font><font face="TimesNewRoman" size="1">-1 </font><font face="TimesNewRoman" size="3">to 2.93 Bq l</font><font face="TimesNewRoman" size="1">-1 </font><font face="TimesNewRoman" size="3">with an average of 1.52 ± 0.045 Bq l</font><font face="TimesNewRoman" size="1">-1</font><font face="TimesNewRoman" size="3">.</font><b><font face="TimesNewRoman,Bold" size="3"><p align="left">Conclusion: </p><p align="left">drinking, is safe as far as radium concentration is concerned with the exception of a few isolated</p><p align="left">thermal spring sources. </p></font><font face="TimesNewRoman" size="3">Results indicate that the thermal spring water, which is also being used for</font><i><font face="TimesNewRoman,Italic" size="3">Iran. J. Radiat. Res., 2005 2 (4): 197-204</font></i></b></b></b></b></b> ,SSNTDs,health,thermal spring,radon,Radium 197 204 http://ijrr.com/browse.php?a_code=A-10-1-86&slc_lang=en&sid=1 K. Kant kkant_67@rediffmail.com 79003194753284600216 79003194753284600216 Yes S.B. Upadhyay 79003194753284600217 79003194753284600217 No S.K. Chakarvarti 79003194753284600218 79003194753284600218 No