Radon concentration in drinking water and supplementary exposure in Baita-Stei mining area, Bihor county (Romania)

Abstract Radon is soluble in water, and the radon in drinking water is one of the sources of indoor radon. The China national standard for drinking water (GB5749-2006) indicates that the radon concentration in drinking water cannot be higher than 300pCi/L. The widely used method for measuring radon concentration in water is to use the RAD7 and the H2O accessory which provided by the Durridge Company for bubbling measurement. There are two kind sample bottles: 40ml and 250ml; the measurement steps: bubbling for 5 minutes, and measuring for 20 minutes. For the 40ml sample volume the conversion coefficient is around 25. For the 250ml sample volume the conversion coefficient is around 4. Since the price of the accessory is more than one thousand dollars, and the drying tube of the accessory is small, it needs to be replaced after each measurement which makes the operation is troublesome. We used a big drying tube to perform the radon concentration in water measurement. A new model for description the radon concentration in the gas circuit is proposed, and the conversion coefficient in any measurement condition is obtained. Any volume of sample bottle and drying tube can be used, selecting the suitable bubbling time and measuring time, the radon concentration in water can be obtained.

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Childhood cancer mortality and radon concentration in drinking water in North Carolina

British Journal of Cancer ◽

10.1038/bjc.1991.143 ◽

1991 ◽

Vol 63 (4) ◽

pp. 626-629 ◽

Cited By ~ 28

Author(s):

GW Collman ◽

DP Loomis ◽

DP Sandler

Keyword(s):

North Carolina ◽

Drinking Water ◽

Childhood Cancer ◽

Cancer Mortality ◽

Radon Concentration

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RADON IN GROUNDWATER OF MAGADI TALUK, RAMANAGARA DISTRICT IN KARNATAKA

Radiation Protection Dosimetry ◽

10.1093/rpd/ncy176 ◽

2018 ◽

Vol 183 (4) ◽

pp. 514-521

Author(s):

P Vipin Kumar ◽

S B Gudennavar ◽

M S Chandrashekara ◽

S G Bubbly ◽

K S Hamsa

Keyword(s):

Drinking Water ◽

Radon Concentration ◽

Noble Gas ◽

Alpha Decay ◽

Water Soluble ◽

Human Beings ◽

Maximum Permissible Level ◽

Uranium Series ◽

Groundwater Samples ◽

Karnataka State

ABSTRACT Radon is a water-soluble radioactive noble gas produced from the alpha decay of 226Ra in uranium series. Its presence in drinking water and open air increases the risk of lung and intestinal cancers in human beings. In view of this, radon concentration in groundwater and its dose due to inhalation and ingestion to the population of Magadi taluk of Ramanagara district in Karnataka state, India was studied. The groundwater samples were analyzed for radon concentration using emanometry technique. The study showed that the radon concentration in this area varied from 27.4 ± 1.0 to 167.5 ± 3.9 Bq/L and the effective dose ranged from 104.2 ± 2.7 to 636.2 ± 11.0 μSv/a. The study also revealed that 95% of the 37 samples studied showed higher radon concentration compared to the UNSCEAR recommendation (40 Bq/L) and all the samples showed higher than the USEPA recommendation (11.1 Bq/L). Ten samples have concentration above the maximum permissible level prescribed by WHO (100 Bq/L). The groundwater samples are found to be slightly alkaline within the permissible limit of Indian Standards.

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Measurement of radon concentration in drinking water and natural radioactivity in soil and their radiological hazards

Journal of Radiation Research and Applied Sciences ◽

10.1080/16878507.2019.1693175 ◽

2019 ◽

Vol 13 (1) ◽

pp. 12-26

Author(s):

Suresh S ◽

Rangaswamy D R ◽

Srinivasa E ◽

Sannappa J

Keyword(s):

Drinking Water ◽

Natural Radioactivity ◽

Radon Concentration ◽

Radiological Hazards

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Hydrochemical Characteristics of the Mongolian Plateau and its Pollution Levels

Inner Asia ◽

10.1163/22105018-12340027 ◽

2014 ◽

Vol 16 (2) ◽

pp. 427-441 ◽

Cited By ~ 1

Author(s):

Osamu Nagafuchi ◽

Koyomi Nakazawa ◽

Kanji Okano ◽

Ken’ichi Osaka ◽

Yuki Nishida ◽

...

Keyword(s):

Trace Elements ◽

Drinking Water ◽

Water Samples ◽

Salt Water ◽

Mining Area ◽

Mining Activity ◽

World Health ◽

Anthropogenic Activity ◽

Small Scale ◽

Mongolian Plateau

Increasing large-scale and rampant small-scale mining activity in Mongolia is raising fears about the possibility of regional environmental pollution. To characterise the level of groundwater pollution related to large- and small-scale underground resource development in the Mongolian plateau, we analysed 10 groundwater and 3 surface water samples collected from three areas: the Oyu Tolgoi mining area (n = 3), the Tavan Tolgoi mining area (n = 9) and an abandoned small-scale gold-mining site in the suburban of Ulaanbaatar (n = 1). The samples were collected between 29 August and 5 September 2012. Measurement parameters included pH; electrical conductivity; dissolved organic carbon; dissolved nitrogen; and the concentrations of major ions and trace elements. Principal component analyses, Piper diagrams and enrichment factor analyses were applied to a set of hydrochemical data. Water samples were analysed to identify components that may adversely affect the regional environment and human health. Analytical measurements showed that the studied sites were highly affected by fossil salt water and trace elements derived from anthropogenic activity. We found that groundwater samples from the Oyu Tolgoi area were more polluted than those from the Tavan Tolgoi area. Because wells in the pasture area adjacent to the mining sites supply drinking water for livestock and nomads, it is especially important to monitor these wells for NO3−, As and Se, for which the World Health Organisation has established drinking-water guidelines. The concentrations of NO3−, As and Se in wells may be used as indicators to evaluate the human and livestock health risks related to mining activity in this area.

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Radon 222Rn in drinking water of West Pomeranian Voivodeship and Kuyavian-Pomeranian Voivodeship, Poland

Nukleonika ◽

10.2478/nuka-2018-0005 ◽

2018 ◽

Vol 63 (2) ◽

pp. 43-46

Author(s):

Kamil Wieprzowski ◽

Marcin Bekas ◽

Elżbieta Waśniewska ◽

Adam Wardziński ◽

Andrzej Magiera

Keyword(s):

Drinking Water ◽

Radon Concentration ◽

Liquid Scintillation ◽

Natural Radionuclide ◽

Decay Product ◽

Scintillation Counting ◽

Population Exposure ◽

Human Consumption ◽

Counting Method ◽

The West

Abstract Radon Rn-222 is a commonly occurring natural radionuclide found in the environment from uranium-radium radioactive series, which is the decay product of radium Ra-226. The presence of radon carries negative health effects. It is, in fact, classified as a carcinogen, and therefore, it is necessary to continuously monitor its concentration. The aim of this study was to determine the level of radon-222 concentration in water intended for human consumption in the two voivodeships of Poland: West Pomeranian and Kuyavian-Pomeranian. Measurements were performed for more than 60 intakes. The level of radon was measured by using the liquid scintillation counting method. The range of measured radon concentration in the water from the West Pomeranian Voivodeship was from 0.90 to 11.41 Bq/dm3 with an average of 5.01 Bq/dm3, while that from the Kuyavian-Pomeranian Voivodeship was from 1.22 to 24.20 Bq/dm3 with an average of 4.67 Bq/dm3. Only in three water intakes, the concentration of radon-222 exceeded the value of 10 Bq/dm3. The obtained results allowed to conclude that population exposure associated with radon-222 in water is negligible and there is no need to take further action. In the case of three intakes where a higher concentration of radon was found, the potential exposure was low.

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