Investigation the natural radioactivity in local and imported chemical fertilizers

Detalhes bibliográficos
Autor(a) principal: Hussain,Raad Obid
Data de Publicação: 2011
Outros Autores: Hussain,Hayder Hamza
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Archives of Biology and Technology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000400018
Resumo: In order to assess the radioactive level in the environment, the specific activities of 238U, 232Th and 40K were measured by using a gamma ray spectrometer based on a NaI(Tl) detector. The results showed that the specific activities of 238U, 232Th and 40K were 12.846-88.585, 1.304-26.656 and 11.598-2275.896 Bq/kg respectively. The radium equivalent activity was also calculated which varied from 0.893 to 175.244 Bq/kg. The radium equivalent average values were lower than the world average. In general, the highest level of radium equivalent value was in leafy type NPK fertilizers. The urea type had no radionuclide. The specific activity and absorbed dose rate at 1m above the ground surface (nGy/h) after NPK fertilizers agricultural applications were calculated and the maximum value of dose rate was 0.15% of the world average outdoor exposure due to terrestrial gamma radiation.
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spelling Investigation the natural radioactivity in local and imported chemical fertilizersNatural radioactivityGamma-spectrometryFertilizersIn order to assess the radioactive level in the environment, the specific activities of 238U, 232Th and 40K were measured by using a gamma ray spectrometer based on a NaI(Tl) detector. The results showed that the specific activities of 238U, 232Th and 40K were 12.846-88.585, 1.304-26.656 and 11.598-2275.896 Bq/kg respectively. The radium equivalent activity was also calculated which varied from 0.893 to 175.244 Bq/kg. The radium equivalent average values were lower than the world average. In general, the highest level of radium equivalent value was in leafy type NPK fertilizers. The urea type had no radionuclide. The specific activity and absorbed dose rate at 1m above the ground surface (nGy/h) after NPK fertilizers agricultural applications were calculated and the maximum value of dose rate was 0.15% of the world average outdoor exposure due to terrestrial gamma radiation.Instituto de Tecnologia do Paraná - Tecpar2011-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000400018Brazilian Archives of Biology and Technology v.54 n.4 2011reponame:Brazilian Archives of Biology and Technologyinstname:Instituto de Tecnologia do Paraná (Tecpar)instacron:TECPAR10.1590/S1516-89132011000400018info:eu-repo/semantics/openAccessHussain,Raad ObidHussain,Hayder Hamzaeng2011-08-11T00:00:00Zoai:scielo:S1516-89132011000400018Revistahttps://www.scielo.br/j/babt/https://old.scielo.br/oai/scielo-oai.phpbabt@tecpar.br||babt@tecpar.br1678-43241516-8913opendoar:2011-08-11T00:00Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar)false
dc.title.none.fl_str_mv Investigation the natural radioactivity in local and imported chemical fertilizers
title Investigation the natural radioactivity in local and imported chemical fertilizers
spellingShingle Investigation the natural radioactivity in local and imported chemical fertilizers
Hussain,Raad Obid
Natural radioactivity
Gamma-spectrometry
Fertilizers
title_short Investigation the natural radioactivity in local and imported chemical fertilizers
title_full Investigation the natural radioactivity in local and imported chemical fertilizers
title_fullStr Investigation the natural radioactivity in local and imported chemical fertilizers
title_full_unstemmed Investigation the natural radioactivity in local and imported chemical fertilizers
title_sort Investigation the natural radioactivity in local and imported chemical fertilizers
author Hussain,Raad Obid
author_facet Hussain,Raad Obid
Hussain,Hayder Hamza
author_role author
author2 Hussain,Hayder Hamza
author2_role author
dc.contributor.author.fl_str_mv Hussain,Raad Obid
Hussain,Hayder Hamza
dc.subject.por.fl_str_mv Natural radioactivity
Gamma-spectrometry
Fertilizers
topic Natural radioactivity
Gamma-spectrometry
Fertilizers
description In order to assess the radioactive level in the environment, the specific activities of 238U, 232Th and 40K were measured by using a gamma ray spectrometer based on a NaI(Tl) detector. The results showed that the specific activities of 238U, 232Th and 40K were 12.846-88.585, 1.304-26.656 and 11.598-2275.896 Bq/kg respectively. The radium equivalent activity was also calculated which varied from 0.893 to 175.244 Bq/kg. The radium equivalent average values were lower than the world average. In general, the highest level of radium equivalent value was in leafy type NPK fertilizers. The urea type had no radionuclide. The specific activity and absorbed dose rate at 1m above the ground surface (nGy/h) after NPK fertilizers agricultural applications were calculated and the maximum value of dose rate was 0.15% of the world average outdoor exposure due to terrestrial gamma radiation.
publishDate 2011
dc.date.none.fl_str_mv 2011-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000400018
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000400018
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-89132011000400018
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Instituto de Tecnologia do Paraná - Tecpar
publisher.none.fl_str_mv Instituto de Tecnologia do Paraná - Tecpar
dc.source.none.fl_str_mv Brazilian Archives of Biology and Technology v.54 n.4 2011
reponame:Brazilian Archives of Biology and Technology
instname:Instituto de Tecnologia do Paraná (Tecpar)
instacron:TECPAR
instname_str Instituto de Tecnologia do Paraná (Tecpar)
instacron_str TECPAR
institution TECPAR
reponame_str Brazilian Archives of Biology and Technology
collection Brazilian Archives of Biology and Technology
repository.name.fl_str_mv Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar)
repository.mail.fl_str_mv babt@tecpar.br||babt@tecpar.br
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