Behaviour and fluxes of natural radionuclides in the production process of a phosphoric acid plant

被引：67

作者：

Bolivar, J. P. ^{[2
]}

Martin, J. E. ^{[2
]}

Garcia-Tenorio, R. ^{[3
]}

Perez-Moreno, J. P. ^{[2
]}

Mas, J. L. ^{[1
]}

机构：

[1] Univ Seville, Dept Appl Phys 1, E-41012 Seville, Spain

[2] Univ Huelva, Dept Appl Phys, Huelva 21071, Spain

[3] Univ Seville, Dept Appl Phys 2, Seville 41013, Spain

来源：

APPLIED RADIATION AND ISOTOPES | 2009年 / 67卷 / 02期

关键词：

Phosphoric acid; Activity balance; NORM; Radioactivity flow; PHOSPHATE FERTILIZERS; GAMMA-SPECTROMETRY; RADIOACTIVE IMPACT; PHOSPHOGYPSUM; SOILS; ACTINIDES; SEDIMENTS; SAMPLES; RA-226; BRAZIL;

D O I：

10.1016/j.apradiso.2008.10.012

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In recent years there has been an increasing awareness of the occupational and public hazards of the radiological impact of non-nuclear industries which process materials containing naturally occurring radionuclides. These include the industries devoted to the production of phosphoric acid by treating sedimentary phosphate rocks enriched in radionuclides from the uranium series. With the aim of evaluating the radiological impact of a phosphoric acid factory located in the southwestern Spain, the distribution and levels of radionuclides in the materials involved in its production process have been analysed. In this way, it is possible to asses the flows of radionuclides at each step and to locate those points where a possible radionuclide accumulation could be produced. A set of samples collected along the whole production process were analysed to determine their radionuclide content by both alpha-particle and gamma spectrometry techniques. The radionuclide fractionation steps and enrichment sources have been located, allowing the establishment of their mass (activity) balances per year. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：345 / 356

页数：12

共 25 条

[1] Ra and U isotopes determination in phosphogypsum leachates by alpha-particle spectrometry [J].