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Novel Method of Quantifying Radioactive Cesium-Rich Microparticles (CsMPs) in the Environment from the Fukushima Daiichi Nuclear Power Plant
Highly radioactive cesium-rich microparticles (CsMPs) were released from the Fukushima Daiichi nuclear power plant (FDNPP) to the surrounding environment at an early stage of the nuclear disaster in March of 2011; however, the quantity of released CsMPs remains undetermined. Here, we report a novel...
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Published in: | Environmental science & technology 2018-06, Vol.52 (11), p.6390-6398 |
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creator | Ikehara, Ryohei Suetake, Mizuki Komiya, Tatsuki Furuki, Genki Ochiai, Asumi Yamasaki, Shinya Bower, William R Law, Gareth T. W Ohnuki, Toshihiko Grambow, Bernd Ewing, Rodney C Utsunomiya, Satoshi |
description | Highly radioactive cesium-rich microparticles (CsMPs) were released from the Fukushima Daiichi nuclear power plant (FDNPP) to the surrounding environment at an early stage of the nuclear disaster in March of 2011; however, the quantity of released CsMPs remains undetermined. Here, we report a novel method to quantify the number of CsMPs in surface soils at or around Fukushima and the fraction of radioactivity they contribute, which we call “quantification of CsMPs” (QCP) and is based on autoradiography. Here, photostimulated luminescence (PSL) is linearly correlated to the radioactivity of various microparticles, with a regression coefficient of 0.0523 becquerel/PSL/h (Bq/PSL/h). In soil collected from Nagadoro, Fukushima, Japan, CsMPs were detected in soil sieved with a 114 μm mesh. There was no overlap between the radioactivities of CsMPs and clay particles adsorbing Cs. Based on the distribution of radioactivity of CsMPs, the threshold radioactivity of CsMPs in the size fraction of |
doi_str_mv | 10.1021/acs.est.7b06693 |
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W ; Ohnuki, Toshihiko ; Grambow, Bernd ; Ewing, Rodney C ; Utsunomiya, Satoshi</creator><creatorcontrib>Ikehara, Ryohei ; Suetake, Mizuki ; Komiya, Tatsuki ; Furuki, Genki ; Ochiai, Asumi ; Yamasaki, Shinya ; Bower, William R ; Law, Gareth T. W ; Ohnuki, Toshihiko ; Grambow, Bernd ; Ewing, Rodney C ; Utsunomiya, Satoshi</creatorcontrib><description>Highly radioactive cesium-rich microparticles (CsMPs) were released from the Fukushima Daiichi nuclear power plant (FDNPP) to the surrounding environment at an early stage of the nuclear disaster in March of 2011; however, the quantity of released CsMPs remains undetermined. Here, we report a novel method to quantify the number of CsMPs in surface soils at or around Fukushima and the fraction of radioactivity they contribute, which we call “quantification of CsMPs” (QCP) and is based on autoradiography. Here, photostimulated luminescence (PSL) is linearly correlated to the radioactivity of various microparticles, with a regression coefficient of 0.0523 becquerel/PSL/h (Bq/PSL/h). In soil collected from Nagadoro, Fukushima, Japan, CsMPs were detected in soil sieved with a 114 μm mesh. There was no overlap between the radioactivities of CsMPs and clay particles adsorbing Cs. Based on the distribution of radioactivity of CsMPs, the threshold radioactivity of CsMPs in the size fraction of <114 μm was determined to be 0.06 Bq. Based on this method, the number and radioactivity fraction of CsMPs in four surface soils collected from the vicinity of the FDNPP were determined to be 48–318 particles per gram and 8.53–31.8%, respectively. The QCP method is applicable to soils with a total radioactivity as high as ∼106 Bq/kg. This novel method is critically important and can be used to quantitatively understand the distribution and migration of the highly radioactive CsMPs in near-surface environments surrounding Fukushima.</description><identifier>ISSN: 0013-936X</identifier><identifier>EISSN: 1520-5851</identifier><identifier>DOI: 10.1021/acs.est.7b06693</identifier><identifier>PMID: 29782160</identifier><language>eng</language><publisher>United States: American Chemical Society</publisher><subject>Airborne particulates ; Autoradiography ; Cesium ; Chemical Sciences ; Computational chemistry ; Environmental impact ; Mathematical models ; Microparticles ; Migration ; Nuclear accidents ; Nuclear energy ; Nuclear power plants ; Radioactive materials ; Radioactivity ; Radiochemistry ; Regression coefficients ; Soil surfaces ; Soils</subject><ispartof>Environmental science & technology, 2018-06, Vol.52 (11), p.6390-6398</ispartof><rights>Copyright American Chemical Society Jun 5, 2018</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a482t-212f2f3b8f811f22a10ba1070f33a067e303ccfe7fea2ce593abdd00f7db10a13</citedby><cites>FETCH-LOGICAL-a482t-212f2f3b8f811f22a10ba1070f33a067e303ccfe7fea2ce593abdd00f7db10a13</cites><orcidid>0000-0002-6197-9705 ; 0000-0002-2320-6330 ; 0000-0001-8494-5711</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,777,781,882,27905,27906</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29782160$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://in2p3.hal.science/in2p3-01901749$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Ikehara, Ryohei</creatorcontrib><creatorcontrib>Suetake, Mizuki</creatorcontrib><creatorcontrib>Komiya, Tatsuki</creatorcontrib><creatorcontrib>Furuki, Genki</creatorcontrib><creatorcontrib>Ochiai, Asumi</creatorcontrib><creatorcontrib>Yamasaki, Shinya</creatorcontrib><creatorcontrib>Bower, William R</creatorcontrib><creatorcontrib>Law, Gareth T. 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Here, photostimulated luminescence (PSL) is linearly correlated to the radioactivity of various microparticles, with a regression coefficient of 0.0523 becquerel/PSL/h (Bq/PSL/h). In soil collected from Nagadoro, Fukushima, Japan, CsMPs were detected in soil sieved with a 114 μm mesh. There was no overlap between the radioactivities of CsMPs and clay particles adsorbing Cs. Based on the distribution of radioactivity of CsMPs, the threshold radioactivity of CsMPs in the size fraction of <114 μm was determined to be 0.06 Bq. Based on this method, the number and radioactivity fraction of CsMPs in four surface soils collected from the vicinity of the FDNPP were determined to be 48–318 particles per gram and 8.53–31.8%, respectively. The QCP method is applicable to soils with a total radioactivity as high as ∼106 Bq/kg. This novel method is critically important and can be used to quantitatively understand the distribution and migration of the highly radioactive CsMPs in near-surface environments surrounding Fukushima.</description><subject>Airborne particulates</subject><subject>Autoradiography</subject><subject>Cesium</subject><subject>Chemical Sciences</subject><subject>Computational chemistry</subject><subject>Environmental impact</subject><subject>Mathematical models</subject><subject>Microparticles</subject><subject>Migration</subject><subject>Nuclear accidents</subject><subject>Nuclear energy</subject><subject>Nuclear power plants</subject><subject>Radioactive materials</subject><subject>Radioactivity</subject><subject>Radiochemistry</subject><subject>Regression coefficients</subject><subject>Soil surfaces</subject><subject>Soils</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kV9v0zAUxS3ExLrBM2_IEi9DKN29dhMnj1PZ2KR2jAkk3iwnsYlHEnd20mnfgQ-Nu3ZFQuLBtmT9zrl_DiFvEaYIDE9VFaY6DFNRQpYV_AWZYMogSfMUX5IJAPKk4NmPQ3IUwh0AMA75K3LICpEzzGBCfl-7tW7pUg-Nq6kz9Ouo-sGaR9v_pLeqtk5Vg11rOtfBjl1ya6uGLm3l3Ur5wVatDvRkHpY34QO1PR0aTc_7tfWu73Q_UONd9_R5Mf4aQ2M7RT8pGz0svR6jWHl64x50vNtY9jU5MKoN-s3uPSbfL86_zS-TxZfPV_OzRaJmORsShswww8vc5IiGMYVQxiPAcK4gE5oDryqjhdGKVTotuCrrGsCIukRQyI_Jx61vo1q58rEr_yidsvLybCFtz1ZcAhaAYlasN_TJll55dz_GbcvOhkq3sWPtxiAZzJhIscjziL7_B71zo-_jLJESPEUsOIvU6ZaKWwzBa7PvAUFuYpUxVrlR72KNinc737HsdL3nn3P8O9FGua_5P7s_NvKtog</recordid><startdate>20180605</startdate><enddate>20180605</enddate><creator>Ikehara, Ryohei</creator><creator>Suetake, Mizuki</creator><creator>Komiya, Tatsuki</creator><creator>Furuki, Genki</creator><creator>Ochiai, Asumi</creator><creator>Yamasaki, Shinya</creator><creator>Bower, William R</creator><creator>Law, Gareth T. 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W</au><au>Ohnuki, Toshihiko</au><au>Grambow, Bernd</au><au>Ewing, Rodney C</au><au>Utsunomiya, Satoshi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Novel Method of Quantifying Radioactive Cesium-Rich Microparticles (CsMPs) in the Environment from the Fukushima Daiichi Nuclear Power Plant</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2018-06-05</date><risdate>2018</risdate><volume>52</volume><issue>11</issue><spage>6390</spage><epage>6398</epage><pages>6390-6398</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><abstract>Highly radioactive cesium-rich microparticles (CsMPs) were released from the Fukushima Daiichi nuclear power plant (FDNPP) to the surrounding environment at an early stage of the nuclear disaster in March of 2011; however, the quantity of released CsMPs remains undetermined. Here, we report a novel method to quantify the number of CsMPs in surface soils at or around Fukushima and the fraction of radioactivity they contribute, which we call “quantification of CsMPs” (QCP) and is based on autoradiography. Here, photostimulated luminescence (PSL) is linearly correlated to the radioactivity of various microparticles, with a regression coefficient of 0.0523 becquerel/PSL/h (Bq/PSL/h). In soil collected from Nagadoro, Fukushima, Japan, CsMPs were detected in soil sieved with a 114 μm mesh. There was no overlap between the radioactivities of CsMPs and clay particles adsorbing Cs. Based on the distribution of radioactivity of CsMPs, the threshold radioactivity of CsMPs in the size fraction of <114 μm was determined to be 0.06 Bq. Based on this method, the number and radioactivity fraction of CsMPs in four surface soils collected from the vicinity of the FDNPP were determined to be 48–318 particles per gram and 8.53–31.8%, respectively. The QCP method is applicable to soils with a total radioactivity as high as ∼106 Bq/kg. This novel method is critically important and can be used to quantitatively understand the distribution and migration of the highly radioactive CsMPs in near-surface environments surrounding Fukushima.</abstract><cop>United States</cop><pub>American Chemical Society</pub><pmid>29782160</pmid><doi>10.1021/acs.est.7b06693</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-6197-9705</orcidid><orcidid>https://orcid.org/0000-0002-2320-6330</orcidid><orcidid>https://orcid.org/0000-0001-8494-5711</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Airborne particulates Autoradiography Cesium Chemical Sciences Computational chemistry Environmental impact Mathematical models Microparticles Migration Nuclear accidents Nuclear energy Nuclear power plants Radioactive materials Radioactivity Radiochemistry Regression coefficients Soil surfaces Soils |
title | Novel Method of Quantifying Radioactive Cesium-Rich Microparticles (CsMPs) in the Environment from the Fukushima Daiichi Nuclear Power Plant |
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