Distribution and characteristics of 137Cs in surface soil in the middle of Laos

被引：4

作者：

Nguyen, The-Nghia ^{[1
]}

Bui, Van-Loat ^{[1
]}

Duong, Van-Hao ^{[2
]}

Leuangtakoun, Somsavath ^{[1
,3
]}

Hoang, Huu-Duc ^{[4
]}

Duong, Duc-Thang ^{[5
]}

Le, Ngoc-Thiem ^{[5
]}

Nguyen, Dinh Khai ^{[6
]}

Tran, Dinh-Khoa ^{[7
]}

Tran, Hoai-Nam ^{[8
]}

机构：

[1] VNU Univ Sci, 334 Nguyen Trai, Hanoi 100000, Vietnam

[2] Vietnam Natl Univ, VNU Sch Interdisciplinary Studies, Hanoi, Vietnam

[3] Natl Univ Laos, POB 7322, Viangchan, Laos

[4] Ctr Environm Treatment Technol, High Command Chem, 282 Lac Long Quan,Tay Ho, Hanoi, Vietnam

[5] Vietnam Atom Energy Inst, Inst Nucl Sci & Technol, 179 Hoang Quoc Viet, Hanoi, Vietnam

[6] Mil Inst Radiat & Oncol Med, 18 Dinh Cong Thuong, Hanoi 100000, Vietnam

[7] Vietnam Atom Energy Inst, Dalat Nucl Res Inst, 1 Nguyen Tu Luc, Da Lat, Lamdong, Vietnam

[8] Phenikaa Univ, Fac Fundamental Sci, Hanoi 12116, Vietnam

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2023年 / 332卷 / 09期

关键词：

Environmental radionuclides; Cs-137 activity concentration; Surface soil; Gamma spectroscopy; The middle of Laos; NATURAL RADIOACTIVITY; EROSION; K-40; RADIOCESIUM; CESIUM-137; MIGRATION; PU239+240; SAMPLES; TH-232;

D O I：

10.1007/s10967-023-09051-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This paper presents the assessment of the distribution and characteristics of Cs-137 activity in surface soil in the middle of Laos. Measurement has been conducted for 212 soil samples distributed evenly in the middle of Laos using low background gamma spectrometers. It is found that the activity concentrations of Cs-137 vary in the range of 0.50-7.97 Bq kg(-1) with the average value of 1.46 & PLUSMN; 0.21 Bq kg(-1). The values agree well with those reported for neighboring regions and are significantly lower than the world average value. Higher activity concentrations of Cs-137 were observed in geological formations with claystone, siltstone, and mud. Foothills were found with higher concentrations of Cs-137, while lower Cs-137 concentrations were observed in low-altitude plains. No significant variation of the Cs-137 activity concentration with terrain elevation was found.

引用

页码：3661 / 3673

页数：13

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