Polish Journal of Environmental Studies, Jul 1, 2010
Nine underground water springs from the Szczawno-Jedlina health resort and one from Zagórze Śląsk... more Nine underground water springs from the Szczawno-Jedlina health resort and one from Zagórze Śląskie were investigated for natural radioactivity content (Rn, Ra, U). In order to obtain the necessary data, two different nuclear spectrometry techniques were applied: a liquid scintillation counter that enabled us to determine Rn and Ra isotope content, and α spectrometer for measurements of uranium isotopes (U) in investigated samples. The activity concentrations of Rn in investigated samples varied from 6 Bq/l to 227 Bq/l. For radium isotopes the concentrations ranged from 13 mBq/l to 808 mBq/l for Ra and from below 30 mBq/l to 184 mBq/l for Ra. The activity concentrations for uranium isotopes varied from 2.4 mBq/l to 964 mBq/l for U, and from 1.0 mBq/l to 725 mBq/l for U. The isotopic ratios between uranium and radium isotopes (Ra/Ra, Ra/U, U/U) and annual effective doses due to these isotopes’ consumption were evaluated. Risk levels due to carcinogenic effects of Ra and U radionuclides consumed with water were estimated.
The following Indexes: Homogeneity, Gradient, Conformity, Paddick Conformity and New Conformity o... more The following Indexes: Homogeneity, Gradient, Conformity, Paddick Conformity and New Conformity of the dose distribution were compared. The parameters to assess a high dose to the organs at risk: V10/TV, V90%/TV and the Integral Dose were discussed. The higher the prescription isodose, the more uniform the dose distribution in the target, which is highly beneficial in the case of larger tumor sizes due to the lower risk of complications. For smaller tumors, higher dose heterogeneity is desirable. This can be obtained with a 40% prescription isodose.
Brine is a highly mineralized groundwater (total dissolved solids, TDS > 30 g/l) often contain... more Brine is a highly mineralized groundwater (total dissolved solids, TDS > 30 g/l) often containing also higher amounts of natural radioactive isotopes. Concentration of Cl– ions and some other hydrochemical indicators together with the isotopic data of brines from the studied Upper Silesia Basin (USB) region indicate that their salinity has its origin in leaching the Miocene sediments [6, 7]. Another evidence come from the considerable differences in Cl– concentrations accompanying the constant isotopic composition. Thus, the salinity of deep Carboniferous brines from the USB has its origin in leaching with possible secondary enrichment in infiltration processes. Brines studied in this work are exploited from various geological structures composed of the rocks of different chemical and mineral composition. Investigated brines are not natural springs, but they are obtained from boreholes at a depth of 500–1800 m. Water drillings at Ustron were performed in 1962–1992. Brines from U-...
Nine underground water springs from the Szczawno-Jedlina health resort and one from Zagórze Śląsk... more Nine underground water springs from the Szczawno-Jedlina health resort and one from Zagórze Śląskie were investigated for natural radioactivity content (Rn, Ra, U). In order to obtain the necessary data, two different nuclear spectrometry techniques were applied: a liquid scintillation counter that enabled us to determine Rn and Ra isotope content, and α spectrometer for measurements of uranium isotopes (U) in investigated samples. The activity concentrations of Rn in investigated samples varied from 6 Bq/l to 227 Bq/l. For radium isotopes the concentrations ranged from 13 mBq/l to 808 mBq/l for Ra and from below 30 mBq/l to 184 mBq/l for Ra. The activity concentrations for uranium isotopes varied from 2.4 mBq/l to 964 mBq/l for U, and from 1.0 mBq/l to 725 mBq/l for U. The isotopic ratios between uranium and radium isotopes (Ra/Ra, Ra/U, U/U) and annual effective doses due to these isotopes’ consumption were evaluated. Risk levels due to carcinogenic effects of Ra and U radionuclid...
W pracy przedstawiono wstepne wyniki oznaczen stezen radioaktywnych izotopow: 222Rn oraz 226Ra i ... more W pracy przedstawiono wstepne wyniki oznaczen stezen radioaktywnych izotopow: 222Rn oraz 226Ra i 228Ra w wodach podziemnych i powierzchniowych gornej cześci zlewni Kamienicy. Uzyskane wyniki wskazują na wyraźne zroznicowanie czasowe i przestrzenne wartości stezen tych izotopow. Jest wiec prawdopodobne, ze po uzyskaniu wiekszej ilości danych mozliwe stanie sie przetestowanie zastosowania wymienionych izotopow radonu i radu, jako znacznikow stref mieszania sie wod podziemnych i powierzchniowych na badanym obszarze. Mozliwe bedzie wowczas takze zastosowanie tych izotopow jako wskaźnikow drenazu plytkiego (lokalnego) lub glebszego zbiornika wod podziemnych w skalach krystalicznych Masywu Śnieznika. Zanotowane wysokie wartości stezen radonu, dochodzące do 1662 Bq/dm3, w wodach podziemnych tego rejonu pozwalają uznac te wody za posiadające wlaściwości lecznicze. Obszar gornej cześci zlewni Kamienicy moze byc brany pod uwage jako perspektywiczne zloze radonowych wod leczniczych. PRELIMINAR...
Studies of natural radioactivity in spring water in Swieradów-Czerniawa Health Resort were perfor... more Studies of natural radioactivity in spring water in Swieradów-Czerniawa Health Resort were performed with the use of nuclear and mass spectrometry techniques. The investigated region is situated in the Sudety Mountains, where uranium exploration was conducted in the early 1950s of the last century. Annual effective doses due to radionuclide intake were calculated for 4 out of 20 spring waters used for consumption by spa patients and inhabitants. The summed effective doses without 222Rn were of the range 0.4 microSv to 9.2 microSv, for patient for of a 20-day duration stay and from 1.3 microSv y(-1) to 26.7 microSv y(-1) for an inhabitant. The contribution of radon consumed with water raises these values to 209.4 microSv per 20 days and 608.3 microSv y(-1) for a patient and inhabitant, respectively.
Abstract: The concentrations of 238U, 232Th, and 40K in water from Lake Bosumtwi and bore-holes i... more Abstract: The concentrations of 238U, 232Th, and 40K in water from Lake Bosumtwi and bore-holes in selected towns around the Bosumtwi basin of the Ashanti region of Ghana have been determined. The concentrations were determined for water samples from 24 ...
Polish Journal of Environmental Studies, Jul 1, 2010
Nine underground water springs from the Szczawno-Jedlina health resort and one from Zagórze Śląsk... more Nine underground water springs from the Szczawno-Jedlina health resort and one from Zagórze Śląskie were investigated for natural radioactivity content (Rn, Ra, U). In order to obtain the necessary data, two different nuclear spectrometry techniques were applied: a liquid scintillation counter that enabled us to determine Rn and Ra isotope content, and α spectrometer for measurements of uranium isotopes (U) in investigated samples. The activity concentrations of Rn in investigated samples varied from 6 Bq/l to 227 Bq/l. For radium isotopes the concentrations ranged from 13 mBq/l to 808 mBq/l for Ra and from below 30 mBq/l to 184 mBq/l for Ra. The activity concentrations for uranium isotopes varied from 2.4 mBq/l to 964 mBq/l for U, and from 1.0 mBq/l to 725 mBq/l for U. The isotopic ratios between uranium and radium isotopes (Ra/Ra, Ra/U, U/U) and annual effective doses due to these isotopes’ consumption were evaluated. Risk levels due to carcinogenic effects of Ra and U radionuclides consumed with water were estimated.
The following Indexes: Homogeneity, Gradient, Conformity, Paddick Conformity and New Conformity o... more The following Indexes: Homogeneity, Gradient, Conformity, Paddick Conformity and New Conformity of the dose distribution were compared. The parameters to assess a high dose to the organs at risk: V10/TV, V90%/TV and the Integral Dose were discussed. The higher the prescription isodose, the more uniform the dose distribution in the target, which is highly beneficial in the case of larger tumor sizes due to the lower risk of complications. For smaller tumors, higher dose heterogeneity is desirable. This can be obtained with a 40% prescription isodose.
Brine is a highly mineralized groundwater (total dissolved solids, TDS > 30 g/l) often contain... more Brine is a highly mineralized groundwater (total dissolved solids, TDS > 30 g/l) often containing also higher amounts of natural radioactive isotopes. Concentration of Cl– ions and some other hydrochemical indicators together with the isotopic data of brines from the studied Upper Silesia Basin (USB) region indicate that their salinity has its origin in leaching the Miocene sediments [6, 7]. Another evidence come from the considerable differences in Cl– concentrations accompanying the constant isotopic composition. Thus, the salinity of deep Carboniferous brines from the USB has its origin in leaching with possible secondary enrichment in infiltration processes. Brines studied in this work are exploited from various geological structures composed of the rocks of different chemical and mineral composition. Investigated brines are not natural springs, but they are obtained from boreholes at a depth of 500–1800 m. Water drillings at Ustron were performed in 1962–1992. Brines from U-...
Nine underground water springs from the Szczawno-Jedlina health resort and one from Zagórze Śląsk... more Nine underground water springs from the Szczawno-Jedlina health resort and one from Zagórze Śląskie were investigated for natural radioactivity content (Rn, Ra, U). In order to obtain the necessary data, two different nuclear spectrometry techniques were applied: a liquid scintillation counter that enabled us to determine Rn and Ra isotope content, and α spectrometer for measurements of uranium isotopes (U) in investigated samples. The activity concentrations of Rn in investigated samples varied from 6 Bq/l to 227 Bq/l. For radium isotopes the concentrations ranged from 13 mBq/l to 808 mBq/l for Ra and from below 30 mBq/l to 184 mBq/l for Ra. The activity concentrations for uranium isotopes varied from 2.4 mBq/l to 964 mBq/l for U, and from 1.0 mBq/l to 725 mBq/l for U. The isotopic ratios between uranium and radium isotopes (Ra/Ra, Ra/U, U/U) and annual effective doses due to these isotopes’ consumption were evaluated. Risk levels due to carcinogenic effects of Ra and U radionuclid...
W pracy przedstawiono wstepne wyniki oznaczen stezen radioaktywnych izotopow: 222Rn oraz 226Ra i ... more W pracy przedstawiono wstepne wyniki oznaczen stezen radioaktywnych izotopow: 222Rn oraz 226Ra i 228Ra w wodach podziemnych i powierzchniowych gornej cześci zlewni Kamienicy. Uzyskane wyniki wskazują na wyraźne zroznicowanie czasowe i przestrzenne wartości stezen tych izotopow. Jest wiec prawdopodobne, ze po uzyskaniu wiekszej ilości danych mozliwe stanie sie przetestowanie zastosowania wymienionych izotopow radonu i radu, jako znacznikow stref mieszania sie wod podziemnych i powierzchniowych na badanym obszarze. Mozliwe bedzie wowczas takze zastosowanie tych izotopow jako wskaźnikow drenazu plytkiego (lokalnego) lub glebszego zbiornika wod podziemnych w skalach krystalicznych Masywu Śnieznika. Zanotowane wysokie wartości stezen radonu, dochodzące do 1662 Bq/dm3, w wodach podziemnych tego rejonu pozwalają uznac te wody za posiadające wlaściwości lecznicze. Obszar gornej cześci zlewni Kamienicy moze byc brany pod uwage jako perspektywiczne zloze radonowych wod leczniczych. PRELIMINAR...
Studies of natural radioactivity in spring water in Swieradów-Czerniawa Health Resort were perfor... more Studies of natural radioactivity in spring water in Swieradów-Czerniawa Health Resort were performed with the use of nuclear and mass spectrometry techniques. The investigated region is situated in the Sudety Mountains, where uranium exploration was conducted in the early 1950s of the last century. Annual effective doses due to radionuclide intake were calculated for 4 out of 20 spring waters used for consumption by spa patients and inhabitants. The summed effective doses without 222Rn were of the range 0.4 microSv to 9.2 microSv, for patient for of a 20-day duration stay and from 1.3 microSv y(-1) to 26.7 microSv y(-1) for an inhabitant. The contribution of radon consumed with water raises these values to 209.4 microSv per 20 days and 608.3 microSv y(-1) for a patient and inhabitant, respectively.
Abstract: The concentrations of 238U, 232Th, and 40K in water from Lake Bosumtwi and bore-holes i... more Abstract: The concentrations of 238U, 232Th, and 40K in water from Lake Bosumtwi and bore-holes in selected towns around the Bosumtwi basin of the Ashanti region of Ghana have been determined. The concentrations were determined for water samples from 24 ...
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