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Evaluation of 222Rn and 226Ra concentrations in cement and limestone of Sheikh Buddin Hill, Pezu, Pakistan using different techniques

Lucky Cement Factory, Pezu is using limestone of Sheikh Buddin Hills as a raw material in cement. Workers of the factory have direct and general public have indirect exposure to radiological hazard due to natural radionuclides present in limestone. To address the radiological hazards, limestone, mix...

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Main Authors: Ahmad, Nisar, Nasir, Tabassum, Rizwan, Sohail, Ullah, Hamid, Bakhsh, Muhammad
Format: Article
Published: Taylor & Francis 2019
Subjects:
R Medicine
Online Access:http://eprints.um.edu.my/24355/
https://doi.org/10.1080/03067319.2019.1609465
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spelling my.um.eprints.243552020-05-20T01:41:15Z http://eprints.um.edu.my/24355/ Evaluation of 222Rn and 226Ra concentrations in cement and limestone of Sheikh Buddin Hill, Pezu, Pakistan using different techniques Ahmad, Nisar Nasir, Tabassum Rizwan, Sohail Ullah, Hamid Bakhsh, Muhammad R Medicine Lucky Cement Factory, Pezu is using limestone of Sheikh Buddin Hills as a raw material in cement. Workers of the factory have direct and general public have indirect exposure to radiological hazard due to natural radionuclides present in limestone. To address the radiological hazards, limestone, mixed (limestone+clay) and cement samples were evaluate for concentrations of 222Rn and 226Ra using CR-39, RAD7 and HPGe detectors. Maximum mean values of 222Rn using CR-39 and RAD7 detectors were found 1447 ± 198 and 1416 ± 74 Bq.m−3 in cement samples and minimum were found in 536 ± 122 and 525 ± 45 Bq.m−3 limestone samples, respectively. Maximum mean value of radon exhalation rate of 12.28 ± 1.68 Bq.m−2 h−1 in cement samples was found below the world average value of 57.6 Bq.m−2 h−1. Maximum mean values of 226Ra measured by CR-39 and HPGe detectors were found 24.25 ± 3.35 and 23.6 ± 0.70 Bq.kg−1 in cement samples and minimum were found in 8.98 ± 2.02 and 9.19 ± 0.40 Bq.kg−1 limestone samples, respectively. A positive correlations (R2 = 0.9714) using CR-39 and RAD7 detectors and (R2 = 0.9573) using CR-39 and HPGe detectors were obtained for the concentrations of 222Rn and 226Ra, respectively. Maximum mean value of annual effective dose of 347.78 ± 47.58 µSv.y−1 in cement samples was found below the world average value of 1100 µSv.y−1. © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group. Taylor & Francis 2019 Article PeerReviewed Ahmad, Nisar and Nasir, Tabassum and Rizwan, Sohail and Ullah, Hamid and Bakhsh, Muhammad (2019) Evaluation of 222Rn and 226Ra concentrations in cement and limestone of Sheikh Buddin Hill, Pezu, Pakistan using different techniques. International Journal of Environmental Analytical Chemistry, 99 (7). pp. 683-691. ISSN 0306-7319 https://doi.org/10.1080/03067319.2019.1609465 doi:10.1080/03067319.2019.1609465
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic R Medicine
spellingShingle R Medicine
Ahmad, Nisar
Nasir, Tabassum
Rizwan, Sohail
Ullah, Hamid
Bakhsh, Muhammad
Evaluation of 222Rn and 226Ra concentrations in cement and limestone of Sheikh Buddin Hill, Pezu, Pakistan using different techniques
description Lucky Cement Factory, Pezu is using limestone of Sheikh Buddin Hills as a raw material in cement. Workers of the factory have direct and general public have indirect exposure to radiological hazard due to natural radionuclides present in limestone. To address the radiological hazards, limestone, mixed (limestone+clay) and cement samples were evaluate for concentrations of 222Rn and 226Ra using CR-39, RAD7 and HPGe detectors. Maximum mean values of 222Rn using CR-39 and RAD7 detectors were found 1447 ± 198 and 1416 ± 74 Bq.m−3 in cement samples and minimum were found in 536 ± 122 and 525 ± 45 Bq.m−3 limestone samples, respectively. Maximum mean value of radon exhalation rate of 12.28 ± 1.68 Bq.m−2 h−1 in cement samples was found below the world average value of 57.6 Bq.m−2 h−1. Maximum mean values of 226Ra measured by CR-39 and HPGe detectors were found 24.25 ± 3.35 and 23.6 ± 0.70 Bq.kg−1 in cement samples and minimum were found in 8.98 ± 2.02 and 9.19 ± 0.40 Bq.kg−1 limestone samples, respectively. A positive correlations (R2 = 0.9714) using CR-39 and RAD7 detectors and (R2 = 0.9573) using CR-39 and HPGe detectors were obtained for the concentrations of 222Rn and 226Ra, respectively. Maximum mean value of annual effective dose of 347.78 ± 47.58 µSv.y−1 in cement samples was found below the world average value of 1100 µSv.y−1. © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.
format Article
author Ahmad, Nisar
Nasir, Tabassum
Rizwan, Sohail
Ullah, Hamid
Bakhsh, Muhammad
author_facet Ahmad, Nisar
Nasir, Tabassum
Rizwan, Sohail
Ullah, Hamid
Bakhsh, Muhammad
author_sort Ahmad, Nisar
title Evaluation of 222Rn and 226Ra concentrations in cement and limestone of Sheikh Buddin Hill, Pezu, Pakistan using different techniques
title_short Evaluation of 222Rn and 226Ra concentrations in cement and limestone of Sheikh Buddin Hill, Pezu, Pakistan using different techniques
title_full Evaluation of 222Rn and 226Ra concentrations in cement and limestone of Sheikh Buddin Hill, Pezu, Pakistan using different techniques
title_fullStr Evaluation of 222Rn and 226Ra concentrations in cement and limestone of Sheikh Buddin Hill, Pezu, Pakistan using different techniques
title_full_unstemmed Evaluation of 222Rn and 226Ra concentrations in cement and limestone of Sheikh Buddin Hill, Pezu, Pakistan using different techniques
title_sort evaluation of 222rn and 226ra concentrations in cement and limestone of sheikh buddin hill, pezu, pakistan using different techniques
publisher Taylor & Francis
publishDate 2019
url http://eprints.um.edu.my/24355/
https://doi.org/10.1080/03067319.2019.1609465
_version_ 1669007994377994240
score 13.211869

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