A study on concentration measurements of radon-222 (uranium series) and radon-220 (thoron series) emitted to the atmosphere from tex (cementitious), red brick, and ecocarat among construction materials

Ju, Yong-Jin; Ryu, Younghwan; Jang, Hyonchol; Dong, Ke; Chung, Woon-Kwan; Cho, Jae-Hwan; Kweon, Dae Cheol; Goo, Eun-Hoe; Lee, Jae Seung; Park, Cheolsoo; Lim, Chang-Seon

doi:10.3938/jkps.60.1177

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…Measurement of radioactive substances in water, soil and air are done in various ways, such as alpha spectrophotometry, inductively coupled plasma/mass spectrophotometer, gamma spectrophotometry and liquid Scintillation (Rožmarić, Rogi, Benedik, & Štrok, 2012). Recently, many studies measure the concentration of 222 Rn portable devices, such as RAD7 RTM ( Mehra and Bala, 2013 ; Ju, Ryu, Jang, Dong, & Chung, 2012 ; Todorovic, Jovana Nikolov, Sofija Forkapic, Istvan Bikit, & Dusan Mrdja, 2012 ; Lee & Kim, 2006 ). Hence, in this study a model of portable alpha spectrophotometry RTM1688-2 was used to measure 222 Rn in drinking water.…”

Section: Methodsmentioning

confidence: 99%

“…According to measurement of 300 mL, after the sample size reached the intended temperature, the device was placed in a closed cycle ( Figure 2 ). The time for balance between concentration of 222 Rn and its decay products (daughters 222 Rn) is 4 hour approximately ( Ju, Ryu, & Jang, 2012 ; Mehra & Bala, 2013 ; Lee & Kim, 2006 ). Hence, the 4 hour mean concentration of 222 Rn (Bq/l) and the initial temperature (ºC) was recorded.…”

Section: Methodsmentioning

confidence: 99%

“…Radon 222 ( 222 Rn) is produced as a result of decay of Radium 226 ( 226 Ra) in Uranium 235 ( 235 U) chain. This element is radioactive, odorless, colorless, and water soluble and has a half-life of 3.83 days ( Al-Khateeb, Al-Qudah, Alzoubi, Alqadi, & Aljarrah, 2012 ; Ju, Ryu, & Jang, 2012 ). Several studies indicate that 222 Rn indoor air concentration have a significant relationship with lung cancer ( Torres-Durán, Barros-Dios, Fernández, & Ruano-Ravina, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

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Effective Dose Radon 222 of the Tap Water in Children and Adults People; Minab City, Iran

Fakhri¹,

Kargosha²,

Langarizadeh³

et al. 2015

GJHS

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222Rn is a radioactive, odorless, and colorless element which has a half-life of 3.83 days. One of 222Rn main resources are Groundwater (wells, springs, etc.). Hence, the use of groundwater with high concentration of 222Rn can increase the risk of lung and stomach cancers. Concentration of 222Rn in tap water of Minab city in two temperatures 5 and 15 ºC was measured by radon meter model RTM1668-2. The effective dose was calculated by equations proposed by UNSCEAR. Geometric mean concentration of 222Rn in drinking water was found to be 0.78±0.06 and 0.46±0.04 Bq/l at 5 and 15 °C (p value<0.05), respectively. The effective doses were 0.006 and 0.003 mSv/y for adults, and 0.011 and 0.007 mSv/y for the children, respectively (p value<0.05). Besides, the effective dose for adult through inhaling 222Rn at 5 and 15 °C were estimated 0.0021 and 0.0012mSv/y, respectively. Geometric mean concentration in 222Rn drinking water and effective dose received from drinking water and inhalation of 222Rn is lower than WHO and EPA standard limits. Increasing temperature of drinking water will decrease the effective dose received. Annual Effective dose received from inhalation and consumption of 222Rn in drinking water in children is more than adults.

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