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Measurement of natural radioactivity in building materials in Qena city, Upper Egypt [An article from: Journal of Environmental Radioactivity]
Book Details
Author(s)N.K. Ahmed
PublisherElsevier
ISBN / ASINB000RR3T04
ISBN-13978B000RR3T03
AvailabilityAvailable for download now
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
Description
This digital document is a journal article from Journal of Environmental Radioactivity, published by Elsevier in 2005. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Building materials cause direct radiation exposure because of their radium, thorium and potassium content. In this paper, samples of commonly used building materials (bricks, cement, gypsum, ceramics, marble, limestone and granite) in Qena city, Upper Egypt have been collected randomly over the city. The samples were tested for their radioactivity contents by using gamma spectroscopic measurements. The results show that the highest mean value of ^2^2^6Ra activity is 205+/-83Bqkg^-^1 measured in marble. The corresponding value of ^2^3^2Th is 118+/-14Bqkg^-^1 measured in granite. For ^4^0K this value is (8.7+/-3.9)x10^2Bqkg^-^1 measured in marble. The average concentrations of the three radionuclides in the different building materials are 116+/-54, 64+/-34 and (4.8+/-2.2)x10^2Bqkg^-^1 for ^2^2^6Ra, ^2^3^2Th and ^4^0K, respectively. Radium equivalent activities and various hazard indices were also calculated to assess the radiation hazard. The maximum mean of radium equivalent activity Ra"e"q is 436+/-199Bqkg^-^1 calculated in marble. The highest radioactivity level and dose rate in air from these materials were calculated in marble.
Description:
Building materials cause direct radiation exposure because of their radium, thorium and potassium content. In this paper, samples of commonly used building materials (bricks, cement, gypsum, ceramics, marble, limestone and granite) in Qena city, Upper Egypt have been collected randomly over the city. The samples were tested for their radioactivity contents by using gamma spectroscopic measurements. The results show that the highest mean value of ^2^2^6Ra activity is 205+/-83Bqkg^-^1 measured in marble. The corresponding value of ^2^3^2Th is 118+/-14Bqkg^-^1 measured in granite. For ^4^0K this value is (8.7+/-3.9)x10^2Bqkg^-^1 measured in marble. The average concentrations of the three radionuclides in the different building materials are 116+/-54, 64+/-34 and (4.8+/-2.2)x10^2Bqkg^-^1 for ^2^2^6Ra, ^2^3^2Th and ^4^0K, respectively. Radium equivalent activities and various hazard indices were also calculated to assess the radiation hazard. The maximum mean of radium equivalent activity Ra"e"q is 436+/-199Bqkg^-^1 calculated in marble. The highest radioactivity level and dose rate in air from these materials were calculated in marble.
