radium

Radiological assessment of exposure doses and radon exhalation rates of building materials in Saudi Arabia

  • Mohsen B Challan* and Atteyat A Labib*

Published on: 23rd February, 2018

OCLC Number/Unique Identifier: 7347024500

In the present work, samples of building material are analyzed for their naturally occurring radioisotope activity such as uranium, radium, and radon. The radon emission rates, and the annual effective doses, "AED”, are also investigated. The activity of twenty-four samples, taken from the local markets of Saudi Arabia, was determined using the "Sealed-cup Technique” and Solid State Nuclear Track Detectors, "SSNTD.” The uranium concentration activity of the samples is found to vary from 0.62 to 4.68 ppm with an average of 1.92±0.42 ppm. The radium concentration varies from 0.61 to 4.64 Bq·kg−1, with an average of 1.91±0.42 Bq·kg−1, the radon concentration in the samples varies from 42.29 to 319.97 Bq·m−3 with an average of 131.53±28.94 Bq·m−3. The value of the dissolved radon concentration in the collected samples varies from 12.99 to 98.97 Bq·m−3 with an average of 40.41±8.89 Bq·m−3. The mass exhalation rates are found to vary from 1.54 to 11.65 mBq·kg−1·h−1, with an average of 4.79±1.05 mBq·kg−1·h−1, while the surface inhalation rates vary from 76.97 to 582.35 mBq·m−2·h−1, with an average of 239.38±52.66 mBq·m−2·h−1. The AED due to indoor uses varies from 1.07 to 8.07 mSv·y−1, with an average of 3.32±0.73 mSv·y−1. The AED due to indoor plus outdoor uses varies from 1.47 to 11.10 mSv·y−1, with an average of 4.56±1.0 mSv·y−1. The results of this study show that the values obtained for most samples are within the internationally accepted recommended values. Therefore, these samples can be used as building materials as they do not pose a major risk to humans.
Cite this ArticleCrossMarkPublonsHarvard Library HOLLISGrowKudosResearchGateBase SearchOAI PMHAcademic MicrosoftScilitSemantic ScholarUniversite de ParisUW LibrariesSJSU King LibrarySJSU King LibraryNUS LibraryMcGillDET KGL BIBLiOTEKJCU DiscoveryUniversidad De LimaWorldCatVU on WorldCat
AbstractDOI: 10.29328/journal.jro.1001017Read Full Article HTMLRead Full Article PDF

Cystic fibrosis, the key link with airborne alpha emitting nanoparticulates

  • Florent Pirot*

Published on: 18th June, 2021

OCLC Number/Unique Identifier: 9100376557

Cystic fibrosis is explained in this paper that suggests tackling the disease by elimination of the most significant sources of contamination.
Cite this ArticleCrossMarkPublonsHarvard Library HOLLISGrowKudosResearchGateBase SearchOAI PMHAcademic MicrosoftScilitSemantic ScholarUniversite de ParisUW LibrariesSJSU King LibrarySJSU King LibraryNUS LibraryMcGillDET KGL BIBLiOTEKJCU DiscoveryUniversidad De LimaWorldCatVU on WorldCat
AbstractDOI: 10.29328/journal.jprr.1001023Read Full Article HTMLRead Full Article PDF

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