Natural radionuclide distribution in Brazilian commercial granites

被引：133

作者：

Anjos, RM

Veiga, R

Soares, T

Santos, AMA

Aguiar, JG

Frascá, MHBO

Brage, JAP

Uzêda, D

Mangia, L

Facure, A

Mosquera, B

Carvalho, C

Gomes, PRS

机构：

[1] Univ Fed Fluminense, Inst Fis, BR-24210340 Niteroi, RJ, Brazil

[2] Fdn Jorge Duprat Figueiredo Seguranca & Med Traba, Fundactr, BR-05499970 Sao Paulo, SP, Brazil

[3] IPT, BR-05508901 Sao Paulo, SP, Brazil

来源：

RADIATION MEASUREMENTS | 2005年 / 39卷 / 03期

关键词：

commercial granite; potassium; uranium and thorium concentrations; petrologic signature; annual effective dose rate;

D O I：

10.1016/j.radmeas.2004.05.002

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The dimension stones sector in Brazil produces several varieties of granites, marbles, slates and basalts. More than half of this production corresponds to around 200 different commercial types of granites with specific names, geographical and geological origins and mineral compositions. The well known natural radioactivity present in rocks, where high radiation levels are associated with igneous rocks such as granite, can be used to determine their general petrologic features. This subject is important in environmental radiological protection, since granites are widely used as building and ornamental stones. In this paper, it is applied to correlate the petrographic characteristics of commercial granites with their corresponding dose rates for natural radioactivity. Amounts of thorium, uranium and potassium concentrations have been reported in several Brazilian commercial granite samples. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：245 / 253

页数：9

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