A Nation-Wide Survey on Indoor Radon from 2007 to 2010 in Japan
In two previous nation-wide surveys in the late 1980s and early 1990s, Japanese indoor radon concentrations increased in homes built after the mid 1970s. In order to ascertain whether this trend continued, a nation-wide survey was conducted from 2007 to 2010. In total 3,900 houses were allocated to...
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| Veröffentlicht in: | JOURNAL OF RADIATION RESEARCH 2010, Vol.51 (6), p.683-689 |
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| creator | Suzuki, Gen Yamaguchi, Ichiro Ogata, Hiromitsu Sugiyama, Hideo Yonehara, Hidenori Kasagi, Fumiyoshi Fujiwara, Saeko Tatsukawa, Yoshimi Mori, Ippei Kimura, Shinzo |
| description | In two previous nation-wide surveys in the late 1980s and early 1990s, Japanese indoor radon concentrations increased in homes built after the mid 1970s. In order to ascertain whether this trend continued, a nation-wide survey was conducted from 2007 to 2010. In total 3,900 houses were allocated to 47 prefectures by the Neyman allocation method and 3,461 radon measurements were performed (88.7% success). The fraction of reinforced concrete / concrete block buildings was 32.4%, similar to the value from national statistics. Arithmetic mean (standard deviation, SD) and geometric mean (geometric SD) of radon concentration after adjusting for seasonal fluctuation were 14.3 (14.7) and 10.8 (2.1) Bq/m3. The corresponding population-weighted values were 13.7 (12.3) and 10.4 (2.0) Bq/m3, respectively. It was estimated that only 0.1% of dwellings exceed 100 Bq/m3, a new WHO reference level for indoor radon. Radon concentrations were highest in houses constructed in the mid 1980s and decreased thereafter. In conclusion, arithmetic mean indoor radon in the present survey was slightly lower than in previous surveys and significant reductions in indoor radon concentrations in both wooden and concrete houses can be attributed to alterations in Japanese housing styles in recent decades. |
| doi_str_mv | 10.1269/jrr.10083 |
| format | Article |
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In order to ascertain whether this trend continued, a nation-wide survey was conducted from 2007 to 2010. In total 3,900 houses were allocated to 47 prefectures by the Neyman allocation method and 3,461 radon measurements were performed (88.7% success). The fraction of reinforced concrete / concrete block buildings was 32.4%, similar to the value from national statistics. Arithmetic mean (standard deviation, SD) and geometric mean (geometric SD) of radon concentration after adjusting for seasonal fluctuation were 14.3 (14.7) and 10.8 (2.1) Bq/m3. The corresponding population-weighted values were 13.7 (12.3) and 10.4 (2.0) Bq/m3, respectively. It was estimated that only 0.1% of dwellings exceed 100 Bq/m3, a new WHO reference level for indoor radon. Radon concentrations were highest in houses constructed in the mid 1980s and decreased thereafter. In conclusion, arithmetic mean indoor radon in the present survey was slightly lower than in previous surveys and significant reductions in indoor radon concentrations in both wooden and concrete houses can be attributed to alterations in Japanese housing styles in recent decades.</description><identifier>ISSN: 0449-3060</identifier><identifier>ISSN: 1349-9157</identifier><identifier>EISSN: 1349-9157</identifier><identifier>DOI: 10.1269/jrr.10083</identifier><identifier>PMID: 20940519</identifier><language>eng</language><publisher>England: THE JAPAN RADIATION RESEARCH SOCIETY</publisher><subject>Air Pollutants, Radioactive - analysis ; Air Pollution, Indoor - analysis ; Building materials ; Buildings ; Concrete ; Construction Materials ; Data Collection ; Houses ; Housing ; Humans ; Indoor environments ; Japan ; Mathematics ; Radiation measurements ; Radon ; Radon - analysis ; reinforced concrete ; Residential areas ; Seasonal variations ; Seasons ; Standard deviation ; Statistics ; Styles ; Sulfur dioxide ; Surveys</subject><ispartof>JOURNAL OF RADIATION RESEARCH, 2010, Vol.51 (6), p.683-689</ispartof><rights>COPYRIGHT 2010 Oxford University Press</rights><rights>Copyright Japan Science and Technology Agency 2010</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c723t-f4507ace5e6800275d8b516273add3ee38f9102f8eb25827bd9f8edbd89b36b63</citedby><cites>FETCH-LOGICAL-c723t-f4507ace5e6800275d8b516273add3ee38f9102f8eb25827bd9f8edbd89b36b63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,778,782,862,4012,27912,27913,27914</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20940519$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Suzuki, Gen</creatorcontrib><creatorcontrib>Yamaguchi, Ichiro</creatorcontrib><creatorcontrib>Ogata, Hiromitsu</creatorcontrib><creatorcontrib>Sugiyama, Hideo</creatorcontrib><creatorcontrib>Yonehara, Hidenori</creatorcontrib><creatorcontrib>Kasagi, Fumiyoshi</creatorcontrib><creatorcontrib>Fujiwara, Saeko</creatorcontrib><creatorcontrib>Tatsukawa, Yoshimi</creatorcontrib><creatorcontrib>Mori, Ippei</creatorcontrib><creatorcontrib>Kimura, Shinzo</creatorcontrib><creatorcontrib>Department of Clinical Studies</creatorcontrib><creatorcontrib>International University of Health and Welfare Clinic</creatorcontrib><creatorcontrib>Department of Epidemiology</creatorcontrib><creatorcontrib>Department of Environmental Health</creatorcontrib><creatorcontrib>National Institute of Radiological Sciences</creatorcontrib><creatorcontrib>Radiation Effects Research Foundation</creatorcontrib><creatorcontrib>Center for Information Research and Library</creatorcontrib><creatorcontrib>Research Center for Radiation Protection</creatorcontrib><creatorcontrib>National Institute of Public Health</creatorcontrib><creatorcontrib>Kanagawa</creatorcontrib><creatorcontrib>Health Care Center</creatorcontrib><title>A Nation-Wide Survey on Indoor Radon from 2007 to 2010 in Japan</title><title>JOURNAL OF RADIATION RESEARCH</title><addtitle>J Radiat Res</addtitle><description>In two previous nation-wide surveys in the late 1980s and early 1990s, Japanese indoor radon concentrations increased in homes built after the mid 1970s. In order to ascertain whether this trend continued, a nation-wide survey was conducted from 2007 to 2010. In total 3,900 houses were allocated to 47 prefectures by the Neyman allocation method and 3,461 radon measurements were performed (88.7% success). The fraction of reinforced concrete / concrete block buildings was 32.4%, similar to the value from national statistics. Arithmetic mean (standard deviation, SD) and geometric mean (geometric SD) of radon concentration after adjusting for seasonal fluctuation were 14.3 (14.7) and 10.8 (2.1) Bq/m3. The corresponding population-weighted values were 13.7 (12.3) and 10.4 (2.0) Bq/m3, respectively. It was estimated that only 0.1% of dwellings exceed 100 Bq/m3, a new WHO reference level for indoor radon. Radon concentrations were highest in houses constructed in the mid 1980s and decreased thereafter. In conclusion, arithmetic mean indoor radon in the present survey was slightly lower than in previous surveys and significant reductions in indoor radon concentrations in both wooden and concrete houses can be attributed to alterations in Japanese housing styles in recent decades.</description><subject>Air Pollutants, Radioactive - analysis</subject><subject>Air Pollution, Indoor - analysis</subject><subject>Building materials</subject><subject>Buildings</subject><subject>Concrete</subject><subject>Construction Materials</subject><subject>Data Collection</subject><subject>Houses</subject><subject>Housing</subject><subject>Humans</subject><subject>Indoor environments</subject><subject>Japan</subject><subject>Mathematics</subject><subject>Radiation measurements</subject><subject>Radon</subject><subject>Radon - analysis</subject><subject>reinforced concrete</subject><subject>Residential areas</subject><subject>Seasonal variations</subject><subject>Seasons</subject><subject>Standard deviation</subject><subject>Statistics</subject><subject>Styles</subject><subject>Sulfur dioxide</subject><subject>Surveys</subject><issn>0449-3060</issn><issn>1349-9157</issn><issn>1349-9157</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkt-L1DAQx4Mo3nLeg_-ABHwQH7rOJE2aPMlyeHpyKPgDH0PapJK1Tda0Fe6_N3VPD0VQAplJ8pkvM5kh5CHCFpnUz_Y5bxFA8Ttkg7zWlUbR3CUbqIvPQcIJOZum0AIKWTDE--SEga5BoN6Q5zv6xs4hxepTcJ6-X_I3f01TpJfRpZTpO-vKoc9ppAygoXMqFoGGSF_bg40PyL3eDpM_u7Gn5OPFiw_nr6qrty8vz3dXVdcwPld9LaCxnRdeKgDWCKdagZI13DrHveeq1wisV75lQrGmdbr4rnVKt1y2kp-SJ0fdQ05fFz_NZgxT54fBRp-WySih6lKVYP9BYi0bVPrfJAohkKlV8_Ef5D4tOZaCDdbln2sNoG-pz3bwJsQ-zdl2q6bZCS5RFHLV2v6FKsv5MXQp-j6U-98Cnh4DupymKfveHHIYbb42CGYdAVNGwPwYgcI-ukl0aUfvfpE_G16AiyNQXkNnhxSHEP1tOd0XuU85e7N22UCJAVmMMiAVXzddc6Gl5N8Brii64A</recordid><startdate>2010</startdate><enddate>2010</enddate><creator>Suzuki, Gen</creator><creator>Yamaguchi, Ichiro</creator><creator>Ogata, Hiromitsu</creator><creator>Sugiyama, Hideo</creator><creator>Yonehara, Hidenori</creator><creator>Kasagi, Fumiyoshi</creator><creator>Fujiwara, Saeko</creator><creator>Tatsukawa, Yoshimi</creator><creator>Mori, Ippei</creator><creator>Kimura, Shinzo</creator><general>THE JAPAN RADIATION RESEARCH SOCIETY</general><general>Oxford University Press</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>K9.</scope><scope>7X8</scope><scope>7T2</scope><scope>7U2</scope><scope>7U7</scope><scope>C1K</scope></search><sort><creationdate>2010</creationdate><title>A Nation-Wide Survey on Indoor Radon from 2007 to 2010 in Japan</title><author>Suzuki, Gen ; Yamaguchi, Ichiro ; Ogata, Hiromitsu ; Sugiyama, Hideo ; Yonehara, Hidenori ; Kasagi, Fumiyoshi ; Fujiwara, Saeko ; Tatsukawa, Yoshimi ; Mori, Ippei ; Kimura, Shinzo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c723t-f4507ace5e6800275d8b516273add3ee38f9102f8eb25827bd9f8edbd89b36b63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Air Pollutants, Radioactive - analysis</topic><topic>Air Pollution, Indoor - analysis</topic><topic>Building materials</topic><topic>Buildings</topic><topic>Concrete</topic><topic>Construction Materials</topic><topic>Data Collection</topic><topic>Houses</topic><topic>Housing</topic><topic>Humans</topic><topic>Indoor environments</topic><topic>Japan</topic><topic>Mathematics</topic><topic>Radiation measurements</topic><topic>Radon</topic><topic>Radon - analysis</topic><topic>reinforced concrete</topic><topic>Residential areas</topic><topic>Seasonal variations</topic><topic>Seasons</topic><topic>Standard deviation</topic><topic>Statistics</topic><topic>Styles</topic><topic>Sulfur dioxide</topic><topic>Surveys</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Suzuki, Gen</creatorcontrib><creatorcontrib>Yamaguchi, Ichiro</creatorcontrib><creatorcontrib>Ogata, Hiromitsu</creatorcontrib><creatorcontrib>Sugiyama, Hideo</creatorcontrib><creatorcontrib>Yonehara, Hidenori</creatorcontrib><creatorcontrib>Kasagi, Fumiyoshi</creatorcontrib><creatorcontrib>Fujiwara, Saeko</creatorcontrib><creatorcontrib>Tatsukawa, Yoshimi</creatorcontrib><creatorcontrib>Mori, Ippei</creatorcontrib><creatorcontrib>Kimura, Shinzo</creatorcontrib><creatorcontrib>Department of Clinical Studies</creatorcontrib><creatorcontrib>International University of Health and Welfare Clinic</creatorcontrib><creatorcontrib>Department of Epidemiology</creatorcontrib><creatorcontrib>Department of Environmental Health</creatorcontrib><creatorcontrib>National Institute of Radiological Sciences</creatorcontrib><creatorcontrib>Radiation Effects Research Foundation</creatorcontrib><creatorcontrib>Center for Information Research and Library</creatorcontrib><creatorcontrib>Research Center for Radiation Protection</creatorcontrib><creatorcontrib>National Institute of Public Health</creatorcontrib><creatorcontrib>Kanagawa</creatorcontrib><creatorcontrib>Health Care Center</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>MEDLINE - Academic</collection><collection>Health and Safety Science Abstracts (Full archive)</collection><collection>Safety Science and Risk</collection><collection>Toxicology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>JOURNAL OF RADIATION RESEARCH</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Suzuki, Gen</au><au>Yamaguchi, Ichiro</au><au>Ogata, Hiromitsu</au><au>Sugiyama, Hideo</au><au>Yonehara, Hidenori</au><au>Kasagi, Fumiyoshi</au><au>Fujiwara, Saeko</au><au>Tatsukawa, Yoshimi</au><au>Mori, Ippei</au><au>Kimura, Shinzo</au><aucorp>Department of Clinical Studies</aucorp><aucorp>International University of Health and Welfare Clinic</aucorp><aucorp>Department of Epidemiology</aucorp><aucorp>Department of Environmental Health</aucorp><aucorp>National Institute of Radiological Sciences</aucorp><aucorp>Radiation Effects Research Foundation</aucorp><aucorp>Center for Information Research and Library</aucorp><aucorp>Research Center for Radiation Protection</aucorp><aucorp>National Institute of Public Health</aucorp><aucorp>Kanagawa</aucorp><aucorp>Health Care Center</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Nation-Wide Survey on Indoor Radon from 2007 to 2010 in Japan</atitle><jtitle>JOURNAL OF RADIATION RESEARCH</jtitle><addtitle>J Radiat Res</addtitle><date>2010</date><risdate>2010</risdate><volume>51</volume><issue>6</issue><spage>683</spage><epage>689</epage><pages>683-689</pages><issn>0449-3060</issn><issn>1349-9157</issn><eissn>1349-9157</eissn><abstract>In two previous nation-wide surveys in the late 1980s and early 1990s, Japanese indoor radon concentrations increased in homes built after the mid 1970s. In order to ascertain whether this trend continued, a nation-wide survey was conducted from 2007 to 2010. In total 3,900 houses were allocated to 47 prefectures by the Neyman allocation method and 3,461 radon measurements were performed (88.7% success). The fraction of reinforced concrete / concrete block buildings was 32.4%, similar to the value from national statistics. Arithmetic mean (standard deviation, SD) and geometric mean (geometric SD) of radon concentration after adjusting for seasonal fluctuation were 14.3 (14.7) and 10.8 (2.1) Bq/m3. The corresponding population-weighted values were 13.7 (12.3) and 10.4 (2.0) Bq/m3, respectively. It was estimated that only 0.1% of dwellings exceed 100 Bq/m3, a new WHO reference level for indoor radon. Radon concentrations were highest in houses constructed in the mid 1980s and decreased thereafter. In conclusion, arithmetic mean indoor radon in the present survey was slightly lower than in previous surveys and significant reductions in indoor radon concentrations in both wooden and concrete houses can be attributed to alterations in Japanese housing styles in recent decades.</abstract><cop>England</cop><pub>THE JAPAN RADIATION RESEARCH SOCIETY</pub><pmid>20940519</pmid><doi>10.1269/jrr.10083</doi><tpages>7</tpages></addata></record> |
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| subjects | Air Pollutants, Radioactive - analysis Air Pollution, Indoor - analysis Building materials Buildings Concrete Construction Materials Data Collection Houses Housing Humans Indoor environments Japan Mathematics Radiation measurements Radon Radon - analysis reinforced concrete Residential areas Seasonal variations Seasons Standard deviation Statistics Styles Sulfur dioxide Surveys |
| title | A Nation-Wide Survey on Indoor Radon from 2007 to 2010 in Japan |
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