Vertical distribution and migration of global fallout Pu in forest soils in southwestern China
Soil samples collected in southwestern China were analyzed for Pu isotopes. The 240Pu/239Pu atom ratios were around 0.18, which indicated the dominant source of global fallout. Consistent sub-surface maximums followed by exponential decline of 239+240Pu activities in the soil cores were observed. Mo...
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| Veröffentlicht in: | Journal of environmental radioactivity 2014-10, Vol.136, p.174-180 |
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| creator | Bu, Wenting Zheng, Jian Guo, Qiuju Uchida, Shigeo |
| description | Soil samples collected in southwestern China were analyzed for Pu isotopes. The 240Pu/239Pu atom ratios were around 0.18, which indicated the dominant source of global fallout. Consistent sub-surface maximums followed by exponential decline of 239+240Pu activities in the soil cores were observed. Most of the Pu has still remained in the 0–10 cm layers since its deposition. Convection velocities and dispersion coefficients for Pu migration in the soils were estimated by the convection–dispersion equation (CDE) model. The effective convection velocities and effective dispersion coefficients ranged from 0.05 to 0.11 cm/y and from 0.06 to 0.29 cm2/y, respectively. Other factors that control the vertical migration of Pu in soil besides precipitation, soil particle size distribution and organic matter were suggested. Long-term migration behaviors of Pu in the soils were simulated. The results provide the Pu background baseline for further environmental monitoring and source identification of non-global fallout Pu inputs in the future.
•Pu isotopes in the soil cores collected in southwestern China were analyzed.•Background baseline data of Pu isotopes in the soils were given.•Parameters of convection–dispersion equation model for Pu migration were estimated.•Long-term migration behavior of Pu in soil was simulated. |
| doi_str_mv | 10.1016/j.jenvrad.2014.06.010 |
| format | Article |
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•Pu isotopes in the soil cores collected in southwestern China were analyzed.•Background baseline data of Pu isotopes in the soils were given.•Parameters of convection–dispersion equation model for Pu migration were estimated.•Long-term migration behavior of Pu in soil was simulated.</description><identifier>ISSN: 0265-931X</identifier><identifier>EISSN: 1879-1700</identifier><identifier>DOI: 10.1016/j.jenvrad.2014.06.010</identifier><identifier>PMID: 24963802</identifier><identifier>CODEN: JERAEE</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; Biological and physicochemical properties of pollutants. Interaction in the soil ; CDE model ; China ; Deposition ; Dispersions ; Downward migration ; Earth sciences ; Earth, ocean, space ; Engineering and environment geology. Geothermics ; Exact sciences and technology ; Fallout ; Forests ; Mass Spectrometry ; Mathematical models ; Migration ; Plutonium - analysis ; Pollution ; Pollution, environment geology ; Pu isotopes ; Radiation Monitoring ; Radioactive Fallout - analysis ; Radioactivity ; Soil and sediments pollution ; Soil Pollutants, Radioactive - analysis ; Soils ; Southwestern China</subject><ispartof>Journal of environmental radioactivity, 2014-10, Vol.136, p.174-180</ispartof><rights>2014 Elsevier Ltd</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2014 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a550t-12814fef9295930ae4e1202a6417bf88b708b723cce4aac51daac95854d0a4403</citedby><cites>FETCH-LOGICAL-a550t-12814fef9295930ae4e1202a6417bf88b708b723cce4aac51daac95854d0a4403</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jenvrad.2014.06.010$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,777,781,3537,27905,27906,45976</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28641753$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24963802$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Bu, Wenting</creatorcontrib><creatorcontrib>Zheng, Jian</creatorcontrib><creatorcontrib>Guo, Qiuju</creatorcontrib><creatorcontrib>Uchida, Shigeo</creatorcontrib><title>Vertical distribution and migration of global fallout Pu in forest soils in southwestern China</title><title>Journal of environmental radioactivity</title><addtitle>J Environ Radioact</addtitle><description>Soil samples collected in southwestern China were analyzed for Pu isotopes. The 240Pu/239Pu atom ratios were around 0.18, which indicated the dominant source of global fallout. Consistent sub-surface maximums followed by exponential decline of 239+240Pu activities in the soil cores were observed. Most of the Pu has still remained in the 0–10 cm layers since its deposition. Convection velocities and dispersion coefficients for Pu migration in the soils were estimated by the convection–dispersion equation (CDE) model. The effective convection velocities and effective dispersion coefficients ranged from 0.05 to 0.11 cm/y and from 0.06 to 0.29 cm2/y, respectively. Other factors that control the vertical migration of Pu in soil besides precipitation, soil particle size distribution and organic matter were suggested. Long-term migration behaviors of Pu in the soils were simulated. The results provide the Pu background baseline for further environmental monitoring and source identification of non-global fallout Pu inputs in the future.
•Pu isotopes in the soil cores collected in southwestern China were analyzed.•Background baseline data of Pu isotopes in the soils were given.•Parameters of convection–dispersion equation model for Pu migration were estimated.•Long-term migration behavior of Pu in soil was simulated.</description><subject>Applied sciences</subject><subject>Biological and physicochemical properties of pollutants. Interaction in the soil</subject><subject>CDE model</subject><subject>China</subject><subject>Deposition</subject><subject>Dispersions</subject><subject>Downward migration</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Engineering and environment geology. Geothermics</subject><subject>Exact sciences and technology</subject><subject>Fallout</subject><subject>Forests</subject><subject>Mass Spectrometry</subject><subject>Mathematical models</subject><subject>Migration</subject><subject>Plutonium - analysis</subject><subject>Pollution</subject><subject>Pollution, environment geology</subject><subject>Pu isotopes</subject><subject>Radiation Monitoring</subject><subject>Radioactive Fallout - analysis</subject><subject>Radioactivity</subject><subject>Soil and sediments pollution</subject><subject>Soil Pollutants, Radioactive - analysis</subject><subject>Soils</subject><subject>Southwestern China</subject><issn>0265-931X</issn><issn>1879-1700</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkU-PFCEQxYnRuOPqR9BwMfHSbUFDAydjJuufZBM9qPEkoenqXSY9sEL3Gr-9jDPqcb1Aqvi94qUeIU8ZtAxY_3LX7jDeZje2HJhooW-BwT2yYVqZhimA-2QDvJeN6djXM_KolB1A7Wv-kJxxYfpOA9-Qb18wL8G7mY6hLDkM6xJSpC6OdB-usvtdpYlezWmo0OTmOa0L_bjSEOmUMpaFlhTmcqhLfbr-UVuYI91eh-gekwdVUvDJ6T4nn99cfNq-ay4_vH2_fX3ZOClhaRjXTEw4GW6k6cChQMaBu14wNUxaD9X3oHjnPQrnvGRjPY3UUozghIDunLw4zr3J6ftaHdh9KB7n2UVMa7FMacklU5zdjcoeGFfSmP9AhZKdFlpVVB5Rn1MpGSd7k8Pe5Z-WgT0EZnf2FJg9BGahtzWwqnt2-mId9jj-Vf1JqALPT4ArNaYpu-hD-cfpw45kV7lXRw7rmm8DZlt8wOhxDBn9YscU7rDyC0OathU</recordid><startdate>20141001</startdate><enddate>20141001</enddate><creator>Bu, Wenting</creator><creator>Zheng, Jian</creator><creator>Guo, Qiuju</creator><creator>Uchida, Shigeo</creator><general>Elsevier Ltd</general><general>Elsevier</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>7X8</scope><scope>7ST</scope><scope>7TV</scope><scope>C1K</scope><scope>SOI</scope><scope>7SU</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20141001</creationdate><title>Vertical distribution and migration of global fallout Pu in forest soils in southwestern China</title><author>Bu, Wenting ; Zheng, Jian ; Guo, Qiuju ; Uchida, Shigeo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a550t-12814fef9295930ae4e1202a6417bf88b708b723cce4aac51daac95854d0a4403</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Applied sciences</topic><topic>Biological and physicochemical properties of pollutants. Interaction in the soil</topic><topic>CDE model</topic><topic>China</topic><topic>Deposition</topic><topic>Dispersions</topic><topic>Downward migration</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Engineering and environment geology. Geothermics</topic><topic>Exact sciences and technology</topic><topic>Fallout</topic><topic>Forests</topic><topic>Mass Spectrometry</topic><topic>Mathematical models</topic><topic>Migration</topic><topic>Plutonium - analysis</topic><topic>Pollution</topic><topic>Pollution, environment geology</topic><topic>Pu isotopes</topic><topic>Radiation Monitoring</topic><topic>Radioactive Fallout - analysis</topic><topic>Radioactivity</topic><topic>Soil and sediments pollution</topic><topic>Soil Pollutants, Radioactive - analysis</topic><topic>Soils</topic><topic>Southwestern China</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bu, Wenting</creatorcontrib><creatorcontrib>Zheng, Jian</creatorcontrib><creatorcontrib>Guo, Qiuju</creatorcontrib><creatorcontrib>Uchida, Shigeo</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>MEDLINE - Academic</collection><collection>Environment Abstracts</collection><collection>Pollution Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Environmental Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of environmental radioactivity</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bu, Wenting</au><au>Zheng, Jian</au><au>Guo, Qiuju</au><au>Uchida, Shigeo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Vertical distribution and migration of global fallout Pu in forest soils in southwestern China</atitle><jtitle>Journal of environmental radioactivity</jtitle><addtitle>J Environ Radioact</addtitle><date>2014-10-01</date><risdate>2014</risdate><volume>136</volume><spage>174</spage><epage>180</epage><pages>174-180</pages><issn>0265-931X</issn><eissn>1879-1700</eissn><coden>JERAEE</coden><abstract>Soil samples collected in southwestern China were analyzed for Pu isotopes. The 240Pu/239Pu atom ratios were around 0.18, which indicated the dominant source of global fallout. Consistent sub-surface maximums followed by exponential decline of 239+240Pu activities in the soil cores were observed. Most of the Pu has still remained in the 0–10 cm layers since its deposition. Convection velocities and dispersion coefficients for Pu migration in the soils were estimated by the convection–dispersion equation (CDE) model. The effective convection velocities and effective dispersion coefficients ranged from 0.05 to 0.11 cm/y and from 0.06 to 0.29 cm2/y, respectively. Other factors that control the vertical migration of Pu in soil besides precipitation, soil particle size distribution and organic matter were suggested. Long-term migration behaviors of Pu in the soils were simulated. The results provide the Pu background baseline for further environmental monitoring and source identification of non-global fallout Pu inputs in the future.
•Pu isotopes in the soil cores collected in southwestern China were analyzed.•Background baseline data of Pu isotopes in the soils were given.•Parameters of convection–dispersion equation model for Pu migration were estimated.•Long-term migration behavior of Pu in soil was simulated.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><pmid>24963802</pmid><doi>10.1016/j.jenvrad.2014.06.010</doi><tpages>7</tpages></addata></record> |
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| subjects | Applied sciences Biological and physicochemical properties of pollutants. Interaction in the soil CDE model China Deposition Dispersions Downward migration Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Exact sciences and technology Fallout Forests Mass Spectrometry Mathematical models Migration Plutonium - analysis Pollution Pollution, environment geology Pu isotopes Radiation Monitoring Radioactive Fallout - analysis Radioactivity Soil and sediments pollution Soil Pollutants, Radioactive - analysis Soils Southwestern China |
| title | Vertical distribution and migration of global fallout Pu in forest soils in southwestern China |
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