Study of primordial radionuclides and radon/thoron exhalation rates in Bageshwar region of Kumaun Himalaya, India

被引：43

作者：

Kumar, Ankur ^{[1
]}

Singh, Prakhar ^{[2
]}

Semwal, Poonam ^{[3
]}

Singh, Kuldeep ^{[3
]}

Prasad, Mukesh ^{[4
]}

Ramola, Rakesh C. ^{[4
]}

机构：

[1] Gurukula Kangri Vishwavidyalaya, Dept Phys, Haridwar 249404, India

[2] Uttarakhand Sci & Educ Res Ctr, Dehra Dun 248006, Uttarakhand, India

[3] Govt PG Coll New Tehri, Dept Phys, Tehri Garhwal 249001, India

[4] HNB Garhwal Univ, Dept Phys, Badshahi Thaul Campus, Tehri Garhwal 249199, India

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2021年 / 328卷 / 03期

关键词：

Sediment radioactivity; Radon exhalation rate; Kumaun Himalaya; SOIL SAMPLES; NATURAL RADIONUCLIDES; GARHWAL HIMALAYA; RA-226; TH-232; K-40;

D O I：

10.1007/s10967-020-07582-y

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The measurements of primordial radionuclides (Ra-226, Th-232 and K-40) and radon exhalation rates in soil samples were performed in Bageshwar region of Kumaun Himalaya, India using gamma-ray spectrometry and scintillation detector based radon monitor, respectively. The average concentrations of Ra-226, Th-232 and K-40 in the investigated region were found to be 36 Bq kg(-1), 50 Bq kg(-1) and 1595 Bq kg(-1), respectively. The average values of radon and thoron mass exhalation rates were observed to be 29 mBq(-1) kg(-1) s(-1) and 256 mBq(-1) kg(-1) s(-1), respectively. The average value of thoron surface exhalation rates was observed to be 2281 mBq(-1) m(-2) s(-1). The external exposure to Ra-226, Th-232 and K-40 is estimated in terms of different hazard assessment indices and dose quantities. The high values of Th-232 content in soil samples indicate the presence of thorium mineralization in the vicinity of study area. The methodology adopted and results obtained are discussed in details.

引用

页码：1361 / 1367

页数：7

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