Distribution of 226Ra, 232Th and 40K in Kanyakumari beach placer deposits along Tamil Nadu coast, India

被引：5

作者：

Natarajan, Thennaarassan ^{[1
,2
]}

Sahoo, Sarata Kumar ^{[2
]}

Nakajima, Tetsuo ^{[2
]}

Veerasamy, Nimelan ^{[1
]}

Yamazaki, Shinnosuke ^{[2
]}

Inoue, Kazumasa ^{[1
]}

Ramola, Rakesh Chand ^{[3
]}

机构：

[1] Tokyo Metropolitan Univ, Grad Sch Human Hlth Sci, Dept Radiol Sci, Arakawa ku, Tokyo 1168551, Japan

[2] Natl Inst Quantum Sci & Technol, Natl Inst Radiol Sci, Inage Ku, Chiba 2638555, Japan

[3] H N B Garhwal Univ, Dept Phys, Tehri Garhwal,Badshahi Thaul Campus, Uttarakhand 249 199, India

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2024年 / 333卷 / 05期

关键词：

High background natural radiation area; Placer deposits; Monazite; Thorium; Uranium; BACKGROUND-RADIATION AREA; NATURAL RADIOACTIVITY; SEDIMENTS; RADIONUCLIDES; EXPOSURE; DISTRICT; LEVEL;

D O I：

10.1007/s10967-023-08940-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Distributions of Ra-226, Th-232 and K-40 were studied in the coastal region of Kanyakumari district, a high background natural radiation area (HBNRA). The absorbed gamma dose rate ranged from 107 +/- 11 to 41,126 +/- 187 nGy/h. The radiation hazard parameters were found to be much higher than the UNSCEAR world average values. Th-232/Ra-226 activity ratios ranged from 3 to 45, which indicates the collected sand samples may be rich in Th bearing monazite minerals that are mainly responsible for the enhanced radiation level in the Kanyakumari HBNRA.

引用

页码：2587 / 2595

页数：9

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