Analysis of the different source terms of natural radionuclides in a river affected by NORM (Naturally Occurring Radioactive Materials) activities

被引：20

作者：

Baeza, A. ^{[1
]}

Corbacho, J. A. ^{[1
]}

Guillen, J. ^{[1
]}

Salas, A. ^{[1
]}

Mora, J. C. ^{[2
]}

机构：

[1] Univ Extremadura, Fac Vet Sci, LARUEX, Dpt Appl Phys, Caceres 10071, Spain

[2] CIEMAT, Dept Environm, Radiat Protect Publ & Environm Unit, E-28040 Madrid, Spain

来源：

CHEMOSPHERE | 2011年 / 83卷 / 07期

关键词：

NORM; Uranium; Radium; Water; Coal-fired power plant; Fertilizer; FIRED POWER-PLANT; RADIOLOGICAL IMPACT; HEAVY-METALS; WATERS; SEDIMENTS; PB-210; PO-210; ASH;

D O I：

10.1016/j.chemosphere.2011.02.042

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The present work studied the radioacitivity impact of a coal-fired power plant (CFPP), a NORM industry, on the water of the Regallo river which the plant uses for cooling. Downstream, this river passes through an important irrigated farming area, and it is a tributary of the Ebro, one of Spain's largest rivers. Although no alteration of the Po-210 or Th-232 content was detected, the U-234,U-238 and Ra-226 contents of the water were significantly greater immediately below CFPP's discharge point. The Ra-226 concentration decreased progressively downstream from the discharge point, but the uranium content increased significantly again at two sampling points 8 km downstream from the CFPP's effluent. This suggested the presence of another, unexpected uranium source term different from the CFPP. The input from this second uranium source term was even greater than that from the CFPP. Different hypotheses were tested (a reservoir used for irrigation, remobilization from sediments, and the effect of fertilizers used in the area), with it finally being demonstrated that the source was the fertilizers used in the adjacent farming areas. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：933 / 940

页数：8

共 22 条

[1]

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