Redox transformations of mercury in an Arctic snowpack at springtime
We investigated the springtime temporal dynamics of both total mercury (Hg) and gaseous Hg in snowpacks from the High Arctic. In situ incubation experiments of snow samples indicated that the production of volatile mercury in snow (VMS) was photo-mediated and occurred in the first 3 cm of snow. The...
Gespeichert in:
| Veröffentlicht in: | Atmospheric environment (1994) 2004-12, Vol.38 (39), p.6763-6774 |
|---|---|
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 6774 |
|---|---|
| container_issue | 39 |
| container_start_page | 6763 |
| container_title | Atmospheric environment (1994) |
| container_volume | 38 |
| creator | Poulain, Alexandre J. Lalonde, Janick D. Amyot, Marc Shead, Justin A. Raofie, Farhad Ariya, Parisa A. |
| description | We investigated the springtime temporal dynamics of both total mercury (Hg) and gaseous Hg in snowpacks from the High Arctic. In situ incubation experiments of snow samples indicated that the production of volatile mercury in snow (VMS) was photo-mediated and occurred in the first 3
cm of snow. The newly produced VMS (consisting mainly of elemental Hg) was partly oxidized back to Hg(II) when light intensity declined or in the absence of UV radiation, probably through a chain of reactions involving photo-induced radicals and organic compounds in the surface snow. During a 2 week monitoring of total Hg in surface snow, we observed a sharp increase in total Hg concentrations, reaching levels 11 times higher than background concentrations, likely as a result of an atmospheric mercury depletion event. Stratigraphic depth profiles indicated that this increase was restricted to the first 2
cm of the snowpack. Total Hg levels subsequently decreased by 92%, reaching background concentrations within 2 days after this event. The photoproduction rate of VMS calculated on the basis of this episode could account for subsequent daily loss of total Hg from the surface of the snowpack. |
| doi_str_mv | 10.1016/j.atmosenv.2004.09.013 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_16193223</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S1352231004008544</els_id><sourcerecordid>16193223</sourcerecordid><originalsourceid>FETCH-LOGICAL-c450t-584153cc719a2cbb0b5937da81b64894a80c6265ce67f6ff3186f2a8b2e55c9a3</originalsourceid><addsrcrecordid>eNqFkMtOwzAQRSMEEqXwC8gb2CX4ETvJjqo8pUpICNaWM7GRS2MX2y3070nVIpZdzSzOncfJskuCC4KJuJkXKvU-arcuKMZlgZsCE3aUjUhdsZzWZXk89IzTnDKCT7OzGOcYY1Y11Si7e9Wd_0EpKBeND71K1ruIvEG9DrAKG2QdUg5NAiQLKDr_vVTwiVRCcRms-0i21-fZiVGLqC_2dZy9P9y_TZ_y2cvj83Qyy6HkOOW8LglnABVpFIW2xS1vWNWpmrSirJtS1RgEFRy0qIwwhpFaGKrqlmrOoVFsnF3v5i6D_1rpmGRvI-jFQjntV1ESQRpGKTsMlhUVFacDKHYgBB9j0EYOT_UqbCTBcmtXzuWfXbm1K3EjB7tD8Gq_QUVQCzP4Axv_02I4nrEtd7vj9OBlbXWQEax2oDsbNCTZeXto1S-GM5PD</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>14726752</pqid></control><display><type>article</type><title>Redox transformations of mercury in an Arctic snowpack at springtime</title><source>Elsevier ScienceDirect Journals</source><creator>Poulain, Alexandre J. ; Lalonde, Janick D. ; Amyot, Marc ; Shead, Justin A. ; Raofie, Farhad ; Ariya, Parisa A.</creator><creatorcontrib>Poulain, Alexandre J. ; Lalonde, Janick D. ; Amyot, Marc ; Shead, Justin A. ; Raofie, Farhad ; Ariya, Parisa A.</creatorcontrib><description>We investigated the springtime temporal dynamics of both total mercury (Hg) and gaseous Hg in snowpacks from the High Arctic. In situ incubation experiments of snow samples indicated that the production of volatile mercury in snow (VMS) was photo-mediated and occurred in the first 3
cm of snow. The newly produced VMS (consisting mainly of elemental Hg) was partly oxidized back to Hg(II) when light intensity declined or in the absence of UV radiation, probably through a chain of reactions involving photo-induced radicals and organic compounds in the surface snow. During a 2 week monitoring of total Hg in surface snow, we observed a sharp increase in total Hg concentrations, reaching levels 11 times higher than background concentrations, likely as a result of an atmospheric mercury depletion event. Stratigraphic depth profiles indicated that this increase was restricted to the first 2
cm of the snowpack. Total Hg levels subsequently decreased by 92%, reaching background concentrations within 2 days after this event. The photoproduction rate of VMS calculated on the basis of this episode could account for subsequent daily loss of total Hg from the surface of the snowpack.</description><identifier>ISSN: 1352-2310</identifier><identifier>EISSN: 1873-2844</identifier><identifier>DOI: 10.1016/j.atmosenv.2004.09.013</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Applied sciences ; Arctic ; Atmospheric pollution ; Convection, turbulence, diffusion. Boundary layer structure and dynamics ; Earth, ocean, space ; Exact sciences and technology ; External geophysics ; Mercury ; Meteorology ; Natural water pollution ; Oxidation ; Pollutants physicochemistry study: properties, effects, reactions, transport and distribution ; Pollution ; Rainwaters, run off water and others ; Reduction ; Snow ; Water treatment and pollution</subject><ispartof>Atmospheric environment (1994), 2004-12, Vol.38 (39), p.6763-6774</ispartof><rights>2004 Elsevier Ltd</rights><rights>2005 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c450t-584153cc719a2cbb0b5937da81b64894a80c6265ce67f6ff3186f2a8b2e55c9a3</citedby><cites>FETCH-LOGICAL-c450t-584153cc719a2cbb0b5937da81b64894a80c6265ce67f6ff3186f2a8b2e55c9a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S1352231004008544$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16318333$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Poulain, Alexandre J.</creatorcontrib><creatorcontrib>Lalonde, Janick D.</creatorcontrib><creatorcontrib>Amyot, Marc</creatorcontrib><creatorcontrib>Shead, Justin A.</creatorcontrib><creatorcontrib>Raofie, Farhad</creatorcontrib><creatorcontrib>Ariya, Parisa A.</creatorcontrib><title>Redox transformations of mercury in an Arctic snowpack at springtime</title><title>Atmospheric environment (1994)</title><description>We investigated the springtime temporal dynamics of both total mercury (Hg) and gaseous Hg in snowpacks from the High Arctic. In situ incubation experiments of snow samples indicated that the production of volatile mercury in snow (VMS) was photo-mediated and occurred in the first 3
cm of snow. The newly produced VMS (consisting mainly of elemental Hg) was partly oxidized back to Hg(II) when light intensity declined or in the absence of UV radiation, probably through a chain of reactions involving photo-induced radicals and organic compounds in the surface snow. During a 2 week monitoring of total Hg in surface snow, we observed a sharp increase in total Hg concentrations, reaching levels 11 times higher than background concentrations, likely as a result of an atmospheric mercury depletion event. Stratigraphic depth profiles indicated that this increase was restricted to the first 2
cm of the snowpack. Total Hg levels subsequently decreased by 92%, reaching background concentrations within 2 days after this event. The photoproduction rate of VMS calculated on the basis of this episode could account for subsequent daily loss of total Hg from the surface of the snowpack.</description><subject>Applied sciences</subject><subject>Arctic</subject><subject>Atmospheric pollution</subject><subject>Convection, turbulence, diffusion. Boundary layer structure and dynamics</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>Mercury</subject><subject>Meteorology</subject><subject>Natural water pollution</subject><subject>Oxidation</subject><subject>Pollutants physicochemistry study: properties, effects, reactions, transport and distribution</subject><subject>Pollution</subject><subject>Rainwaters, run off water and others</subject><subject>Reduction</subject><subject>Snow</subject><subject>Water treatment and pollution</subject><issn>1352-2310</issn><issn>1873-2844</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNqFkMtOwzAQRSMEEqXwC8gb2CX4ETvJjqo8pUpICNaWM7GRS2MX2y3070nVIpZdzSzOncfJskuCC4KJuJkXKvU-arcuKMZlgZsCE3aUjUhdsZzWZXk89IzTnDKCT7OzGOcYY1Y11Si7e9Wd_0EpKBeND71K1ruIvEG9DrAKG2QdUg5NAiQLKDr_vVTwiVRCcRms-0i21-fZiVGLqC_2dZy9P9y_TZ_y2cvj83Qyy6HkOOW8LglnABVpFIW2xS1vWNWpmrSirJtS1RgEFRy0qIwwhpFaGKrqlmrOoVFsnF3v5i6D_1rpmGRvI-jFQjntV1ESQRpGKTsMlhUVFacDKHYgBB9j0EYOT_UqbCTBcmtXzuWfXbm1K3EjB7tD8Gq_QUVQCzP4Axv_02I4nrEtd7vj9OBlbXWQEax2oDsbNCTZeXto1S-GM5PD</recordid><startdate>20041201</startdate><enddate>20041201</enddate><creator>Poulain, Alexandre J.</creator><creator>Lalonde, Janick D.</creator><creator>Amyot, Marc</creator><creator>Shead, Justin A.</creator><creator>Raofie, Farhad</creator><creator>Ariya, Parisa A.</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7TG</scope><scope>7TV</scope><scope>KL.</scope></search><sort><creationdate>20041201</creationdate><title>Redox transformations of mercury in an Arctic snowpack at springtime</title><author>Poulain, Alexandre J. ; Lalonde, Janick D. ; Amyot, Marc ; Shead, Justin A. ; Raofie, Farhad ; Ariya, Parisa A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c450t-584153cc719a2cbb0b5937da81b64894a80c6265ce67f6ff3186f2a8b2e55c9a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Applied sciences</topic><topic>Arctic</topic><topic>Atmospheric pollution</topic><topic>Convection, turbulence, diffusion. Boundary layer structure and dynamics</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>External geophysics</topic><topic>Mercury</topic><topic>Meteorology</topic><topic>Natural water pollution</topic><topic>Oxidation</topic><topic>Pollutants physicochemistry study: properties, effects, reactions, transport and distribution</topic><topic>Pollution</topic><topic>Rainwaters, run off water and others</topic><topic>Reduction</topic><topic>Snow</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Poulain, Alexandre J.</creatorcontrib><creatorcontrib>Lalonde, Janick D.</creatorcontrib><creatorcontrib>Amyot, Marc</creatorcontrib><creatorcontrib>Shead, Justin A.</creatorcontrib><creatorcontrib>Raofie, Farhad</creatorcontrib><creatorcontrib>Ariya, Parisa A.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Pollution Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><jtitle>Atmospheric environment (1994)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Poulain, Alexandre J.</au><au>Lalonde, Janick D.</au><au>Amyot, Marc</au><au>Shead, Justin A.</au><au>Raofie, Farhad</au><au>Ariya, Parisa A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Redox transformations of mercury in an Arctic snowpack at springtime</atitle><jtitle>Atmospheric environment (1994)</jtitle><date>2004-12-01</date><risdate>2004</risdate><volume>38</volume><issue>39</issue><spage>6763</spage><epage>6774</epage><pages>6763-6774</pages><issn>1352-2310</issn><eissn>1873-2844</eissn><abstract>We investigated the springtime temporal dynamics of both total mercury (Hg) and gaseous Hg in snowpacks from the High Arctic. In situ incubation experiments of snow samples indicated that the production of volatile mercury in snow (VMS) was photo-mediated and occurred in the first 3
cm of snow. The newly produced VMS (consisting mainly of elemental Hg) was partly oxidized back to Hg(II) when light intensity declined or in the absence of UV radiation, probably through a chain of reactions involving photo-induced radicals and organic compounds in the surface snow. During a 2 week monitoring of total Hg in surface snow, we observed a sharp increase in total Hg concentrations, reaching levels 11 times higher than background concentrations, likely as a result of an atmospheric mercury depletion event. Stratigraphic depth profiles indicated that this increase was restricted to the first 2
cm of the snowpack. Total Hg levels subsequently decreased by 92%, reaching background concentrations within 2 days after this event. The photoproduction rate of VMS calculated on the basis of this episode could account for subsequent daily loss of total Hg from the surface of the snowpack.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.atmosenv.2004.09.013</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1352-2310 |
| ispartof | Atmospheric environment (1994), 2004-12, Vol.38 (39), p.6763-6774 |
| issn | 1352-2310 1873-2844 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_16193223 |
| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Arctic Atmospheric pollution Convection, turbulence, diffusion. Boundary layer structure and dynamics Earth, ocean, space Exact sciences and technology External geophysics Mercury Meteorology Natural water pollution Oxidation Pollutants physicochemistry study: properties, effects, reactions, transport and distribution Pollution Rainwaters, run off water and others Reduction Snow Water treatment and pollution |
| title | Redox transformations of mercury in an Arctic snowpack at springtime |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-02T05%3A35%3A56IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Redox%20transformations%20of%20mercury%20in%20an%20Arctic%20snowpack%20at%20springtime&rft.jtitle=Atmospheric%20environment%20(1994)&rft.au=Poulain,%20Alexandre%20J.&rft.date=2004-12-01&rft.volume=38&rft.issue=39&rft.spage=6763&rft.epage=6774&rft.pages=6763-6774&rft.issn=1352-2310&rft.eissn=1873-2844&rft_id=info:doi/10.1016/j.atmosenv.2004.09.013&rft_dat=%3Cproquest_cross%3E16193223%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=14726752&rft_id=info:pmid/&rft_els_id=S1352231004008544&rfr_iscdi=true |