Uranium and its decay products in radioactive anomalies of oxidized brown coals (western part of Kansko-Achinsk brown coal basin)

被引：0

作者：

Melgunov, M. S. ^{[1
]}

Gayshin, V. M. ^{[1
]}

Lazareva, E., V ^{[1
]}

Melgunova, E. A. ^{[2
]}

机构：

[1] VS Sobolev Inst Geol & Mineral SB RAS, Novosibirsk 630090, Russia

[2] Boreskov Inst Catalysis SB RAS, Novosibirsk 630090, Russia

来源：

RADIOPROTECTION | 2011年 / 46卷 / 06期

关键词：

D O I：

10.1051/radiopro/20116469s

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Vertical distribution of uranium and its decay products (Ra-226 and Pb-210) in the uppermost layers of the oxidised brown coals was studied for some deposits and natural outcrops of the Western part of the Kansko-Achinsk brown-coal basin. Abnormal accumulation of the mentioned radioactive elements is observed in all studied sites. Several types of radioactive anomalies are differed by the ratio of activities of U-238 and( 226)Ra: 1) Equilibrium; 2) Radium; 3) Uranium. The depletion of Pb-210 in the radioactive horizons of some sites indicates an active emanation of Rn-222 in the underlying coal layers. Uranium besides the form sorbed on coal is presented in poral solutions. It says about its potential mobility and is confirmed experimentally. Radium is actively absorbed by the plants growing on radioactive coals.

引用

页码：S371 / S376

页数：6

共 9 条

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