Sulfate Aerosol as a Potential Transport Medium of Radiocesium from the Fukushima Nuclear Accident
To date, areas contaminated by radionuclides discharged from the Fukushima Dai-ichi nuclear power plant accident have been mapped in detail. However, size of the radionuclides and their mixing state with other aerosol components, which are critical in their removal from the atmosphere, have not yet...
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| Veröffentlicht in: | Environmental science & technology 2012-06, Vol.46 (11), p.5720-5726 |
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| creator | Kaneyasu, Naoki Ohashi, Hideo Suzuki, Fumie Okuda, Tomoaki Ikemori, Fumikazu |
| description | To date, areas contaminated by radionuclides discharged from the Fukushima Dai-ichi nuclear power plant accident have been mapped in detail. However, size of the radionuclides and their mixing state with other aerosol components, which are critical in their removal from the atmosphere, have not yet been revealed. We measured activity size distributions of 134Cs and 137Cs in aerosols collected 47 days after the accident at Tsukuba, Japan, and found that the activity median aerodynamic diameters of 134Cs and 137Cs in the first sample (April 28–May 12) were 0.54 and 0.53 μm, respectively, and those in the second sample (May 12–26) were both 0.63 μm. The activity size distributions of these radiocesium were within the accumulation mode size range and almost overlapped with the mass size distribution of non-sea-salt sulfate aerosol. From the analysis of other aerosol components, we found that sulfate was the potential transport medium for these radionuclides, and resuspended soil particles that attached radionuclides were not the major airborne radioactive substances at the time of measurement. This explains the relatively similar activity sizes of radiocesium measured at various sites during the Chernobyl accident. Our results can serve as basic data for modeling the transport/deposition of radionuclides. |
| doi_str_mv | 10.1021/es204667h |
| format | Article |
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However, size of the radionuclides and their mixing state with other aerosol components, which are critical in their removal from the atmosphere, have not yet been revealed. We measured activity size distributions of 134Cs and 137Cs in aerosols collected 47 days after the accident at Tsukuba, Japan, and found that the activity median aerodynamic diameters of 134Cs and 137Cs in the first sample (April 28–May 12) were 0.54 and 0.53 μm, respectively, and those in the second sample (May 12–26) were both 0.63 μm. The activity size distributions of these radiocesium were within the accumulation mode size range and almost overlapped with the mass size distribution of non-sea-salt sulfate aerosol. From the analysis of other aerosol components, we found that sulfate was the potential transport medium for these radionuclides, and resuspended soil particles that attached radionuclides were not the major airborne radioactive substances at the time of measurement. This explains the relatively similar activity sizes of radiocesium measured at various sites during the Chernobyl accident. 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Sci. Technol</addtitle><description>To date, areas contaminated by radionuclides discharged from the Fukushima Dai-ichi nuclear power plant accident have been mapped in detail. However, size of the radionuclides and their mixing state with other aerosol components, which are critical in their removal from the atmosphere, have not yet been revealed. We measured activity size distributions of 134Cs and 137Cs in aerosols collected 47 days after the accident at Tsukuba, Japan, and found that the activity median aerodynamic diameters of 134Cs and 137Cs in the first sample (April 28–May 12) were 0.54 and 0.53 μm, respectively, and those in the second sample (May 12–26) were both 0.63 μm. The activity size distributions of these radiocesium were within the accumulation mode size range and almost overlapped with the mass size distribution of non-sea-salt sulfate aerosol. From the analysis of other aerosol components, we found that sulfate was the potential transport medium for these radionuclides, and resuspended soil particles that attached radionuclides were not the major airborne radioactive substances at the time of measurement. This explains the relatively similar activity sizes of radiocesium measured at various sites during the Chernobyl accident. Our results can serve as basic data for modeling the transport/deposition of radionuclides.</description><subject>Aerosols</subject><subject>Aerosols - analysis</subject><subject>Aerosols - chemistry</subject><subject>Air Pollutants, Radioactive - analysis</subject><subject>Applied sciences</subject><subject>Atmospheric aerosols</subject><subject>Atmospheric pollution</subject><subject>Carbon - analysis</subject><subject>Cesium Radioisotopes</subject><subject>Chernobyl Nuclear Accident</subject><subject>Exact sciences and technology</subject><subject>Geography</subject><subject>Japan</subject><subject>Models, Chemical</subject><subject>Motion</subject><subject>Nuclear accidents & safety</subject><subject>Nuclear chemistry</subject><subject>Nuclear power plants</subject><subject>Particle Size</subject><subject>Pollutants physicochemistry study: properties, effects, reactions, transport and distribution</subject><subject>Pollution</subject><subject>Radioactive Hazard Release</subject><subject>Rain</subject><subject>Sulfates - analysis</subject><subject>Sulfide compounds</subject><subject>Wind</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpd0F1rFDEUBuAgit1WL_wDEhBBL0bPSSbJ5HIptgr1A63g3ZLJnLBTZzbbZHLhvzelayu9OgQe3pzzMvYC4R2CwPeUBbRam-0jtkIloFGdwsdsBYCysVL_OmLHOV8BgJDQPWVHQigpZSdXrP9RpuAW4mtKMceJu8wd_xYX2i2jm_hlcru8j2nhn2kYy8xj4N_dMEZP-eYZUpz5siV-Vn6XvB1nx78UP5FLfO39ONSYZ-xJcFOm54d5wn6efbg8_dhcfD3_dLq-aFwr7dK0pvcoZN-TsYPWAQm8Au-DVoGCaY2wFqUZXFUWocPe9INWXmnTYytJnrA3t7n7FK8L5WUzj9nTNLkdxZI3CGg1trYzlb56QK9iSbu6XVUCEGo5tqq3t8rXanKisNmnemD6U9GNw81d8dW-PCSWfqbhTv5ruoLXB-Cyd1Oovfox3ztljdTQ3jvn8_9bPfzwL8cHlbc</recordid><startdate>20120605</startdate><enddate>20120605</enddate><creator>Kaneyasu, Naoki</creator><creator>Ohashi, Hideo</creator><creator>Suzuki, Fumie</creator><creator>Okuda, Tomoaki</creator><creator>Ikemori, Fumikazu</creator><general>American Chemical Society</general><scope>IQODW</scope><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>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope><scope>7X8</scope></search><sort><creationdate>20120605</creationdate><title>Sulfate Aerosol as a Potential Transport Medium of Radiocesium from the Fukushima Nuclear Accident</title><author>Kaneyasu, Naoki ; Ohashi, Hideo ; Suzuki, Fumie ; Okuda, Tomoaki ; Ikemori, Fumikazu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a439t-47bc123bbe79d66f1e0c50ccf65fef747299137dac1291081b7bd65c567b143e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Aerosols</topic><topic>Aerosols - analysis</topic><topic>Aerosols - chemistry</topic><topic>Air Pollutants, Radioactive - analysis</topic><topic>Applied sciences</topic><topic>Atmospheric aerosols</topic><topic>Atmospheric pollution</topic><topic>Carbon - analysis</topic><topic>Cesium Radioisotopes</topic><topic>Chernobyl Nuclear Accident</topic><topic>Exact sciences and technology</topic><topic>Geography</topic><topic>Japan</topic><topic>Models, Chemical</topic><topic>Motion</topic><topic>Nuclear accidents & safety</topic><topic>Nuclear chemistry</topic><topic>Nuclear power plants</topic><topic>Particle Size</topic><topic>Pollutants physicochemistry study: properties, effects, reactions, transport and distribution</topic><topic>Pollution</topic><topic>Radioactive Hazard Release</topic><topic>Rain</topic><topic>Sulfates - analysis</topic><topic>Sulfide compounds</topic><topic>Wind</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kaneyasu, Naoki</creatorcontrib><creatorcontrib>Ohashi, Hideo</creatorcontrib><creatorcontrib>Suzuki, Fumie</creatorcontrib><creatorcontrib>Okuda, Tomoaki</creatorcontrib><creatorcontrib>Ikemori, Fumikazu</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Environmental science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kaneyasu, Naoki</au><au>Ohashi, Hideo</au><au>Suzuki, Fumie</au><au>Okuda, Tomoaki</au><au>Ikemori, Fumikazu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Sulfate Aerosol as a Potential Transport Medium of Radiocesium from the Fukushima Nuclear Accident</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2012-06-05</date><risdate>2012</risdate><volume>46</volume><issue>11</issue><spage>5720</spage><epage>5726</epage><pages>5720-5726</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><coden>ESTHAG</coden><abstract>To date, areas contaminated by radionuclides discharged from the Fukushima Dai-ichi nuclear power plant accident have been mapped in detail. However, size of the radionuclides and their mixing state with other aerosol components, which are critical in their removal from the atmosphere, have not yet been revealed. We measured activity size distributions of 134Cs and 137Cs in aerosols collected 47 days after the accident at Tsukuba, Japan, and found that the activity median aerodynamic diameters of 134Cs and 137Cs in the first sample (April 28–May 12) were 0.54 and 0.53 μm, respectively, and those in the second sample (May 12–26) were both 0.63 μm. The activity size distributions of these radiocesium were within the accumulation mode size range and almost overlapped with the mass size distribution of non-sea-salt sulfate aerosol. From the analysis of other aerosol components, we found that sulfate was the potential transport medium for these radionuclides, and resuspended soil particles that attached radionuclides were not the major airborne radioactive substances at the time of measurement. This explains the relatively similar activity sizes of radiocesium measured at various sites during the Chernobyl accident. Our results can serve as basic data for modeling the transport/deposition of radionuclides.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>22533383</pmid><doi>10.1021/es204667h</doi><tpages>7</tpages></addata></record> |
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| subjects | Aerosols Aerosols - analysis Aerosols - chemistry Air Pollutants, Radioactive - analysis Applied sciences Atmospheric aerosols Atmospheric pollution Carbon - analysis Cesium Radioisotopes Chernobyl Nuclear Accident Exact sciences and technology Geography Japan Models, Chemical Motion Nuclear accidents & safety Nuclear chemistry Nuclear power plants Particle Size Pollutants physicochemistry study: properties, effects, reactions, transport and distribution Pollution Radioactive Hazard Release Rain Sulfates - analysis Sulfide compounds Wind |
| title | Sulfate Aerosol as a Potential Transport Medium of Radiocesium from the Fukushima Nuclear Accident |
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