Radiation dose due to radon and thoron progeny inhalation in high-level natural radiation areas of Kerala, India

被引：36
|
作者：
Omori, Yasutaka [1 ,7 ]
Tokonami, Shinji [2 ]
Sahoo, Sarata Kumar [1 ]
Ishikawa, Tetsuo [1 ,7 ]
Sorimachi, Atsuyuki [2 ,7 ]
Hosoda, Masahiro [3 ]
Kudo, Hiromi [3 ]
Pornnumpa, Chanis [3 ]
Nair, Raghu Ram K. [4 ]
Jayalekshmi, Padmavaty Amma [5 ]
Sebastian, Paul [4 ]
Akiba, Suminori [6 ]
机构：
[1] Natl Inst Radiol Sci, Res Ctr Radiat Protect, Inage Ku, 4-9-1 Anagawa, Chiba 2638555, Japan
[2] Hirosaki Univ, Inst Radiat Emergency Med, 66-1 Hon Cho, Hirosaki, Aomori 0368564, Japan
[3] Hirosaki Univ, Grad Sch Hlth Sci, 66-1 Hon Cho, Hirosaki, Aomori 0368564, Japan
[4] Reg Canc Ctr, Trivandrum 695011, Kerala, India
[5] Nat Background Radiat Canc Registry, Karunagappally 690536, Kerala, India
[6] Kagoshima Univ, Grad Sch Med & Dent Sci, 8-35-1 Sakuragaoka, Kagoshima 8908544, Japan
[7] Fukushima Med Univ, Dept Radiat Phys & Chem, 1 Hikarigaoka, Fukushima 9601295, Japan
来源：
JOURNAL OF RADIOLOGICAL PROTECTION | 2017年 / 37卷 / 01期
关键词：
high background radiation area; inhalation; internal exposure; radon; thoron; HIGH BACKGROUND-RADIATION; LONG-TERM MEASUREMENTS; COASTAL KERALA; POPULATION; RN-220; DETECTORS; DWELLINGS; YANGJIANG; CHAMBER; CANCER;
D O I：
10.1088/1361-6498/37/1/111
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In order to evaluate internal exposure to radon and thoron, concentrations for radon, thoron, and thoron progeny were measured for 259 dwellings located in high background radiation areas (HBRAs, outdoor external dose: 3-5 mGy y(-1)) and low background radiation areas (control areas, outdoor external dose: 1 mGy y(-1)) in Karunagappally Taluk, Kerala, India. The measurements were conducted using passive-type radon-thoron detectors and thoron progeny detectors over two six-month measurement periods from June 2010 to June 2011. The results showed no major differences in radon and thoron progeny concentrations between the HBRAs and the control areas. The geometric mean of the annual effective dose due to radon and thoron was calculated as 0.10 and 0.44 mSv, respectively. The doses were small, but not negligible compared with the external dose in the two areas.
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收藏
页码：111 / 126
页数：16
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