Measurement of radon concentrations and their annual effective doses in soils and rocks of Jaintiapur and its adjacent areas, Sylhet, North-east Bangladesh

被引：8

作者：

Majumder, Ratan Kumar ^{[1
]}

Das, Sudeb Chandra ^{[2
]}

Rasul, Md. Golam ^{[2
]}

Khalil, Mohammad Ibrahim ^{[2
]}

Dina, Nafisa Tamannaya ^{[2
]}

Kabir, Mohammad Zafrul ^{[2
]}

Deeba, Farah ^{[2
]}

Rajib, Mohammad ^{[2
]}

机构：

[1] Bangladesh Atom Energy Commiss, Isotope Hydrol Div, Inst Nucl Sci & Technol, Atom Energy Res Estab, Dhaka 1349, Bangladesh

[2] Bangladesh Atom Energy Commiss, Atom Energy Res Estab, Inst Nucl Minerals, Dhaka 1349, Bangladesh

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2021年 / 329卷 / 01期

关键词：

Radon; Natural radiation; Annual effective dose; Uranium exploration; Dupitila sandstone; Surma basin; BENGAL BASIN; INDOOR AIR; GAS RADON; CENOZOIC SEDIMENTS; BUILDING-MATERIALS; EXHALATION RATE; EXPOSURE; GEOLOGY; WATER; RADIOACTIVITY;

D O I：

10.1007/s10967-021-07771-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The study investigates the measurement of radon concentration in soils and rocks as a natural tracer for exploring uranium mineralization, first of its kind in Bangladesh. The range of radon concentration was measured as 8-4360 Bq/m(3) with an average of 851.41 Bq/m(3). Among the measured values, 2120-4360 Bq/m(3) was observed in the Tertiary sediments whereas 8-584 Bq/m(3) was found in the Recent alluvial soil of different bils and haors. These high radon concentrations are explained by geogenic factors such as mineral content in rocks, alluvium cover, sufficient porosity, probable subsurface fault, and flooding by water streamed through adjacent uranium-rich areas in India. The radon values indicate that the rock formations are promising for uranium mineralization. The radon concentration in rocks and soils are well comparable to the similar studies of the other parts of the world. The results are in good agreement with the previous radiometric survey results, suggestive to extensive exploration activities to confirm uranium mineralization in the area. Moreover, the average annual effective dose of 0.008092 mSv/y in the region calculated from the radon values is within the WHO and ICRP safety limits.

引用

页码：265 / 277

页数：13

共 67 条

[1] Comparison of active and passive methods for radon exhalation from a high-exposure building material [J].