Loading…
Oxidation of atomic mercury by hydroxyl radicals and photoinduced decomposition of methylmercury in the aqueous phase
The rate constant for Hg 0+ . OH, k Hg 0+ . OH =(2.4±0.3)×10 9 M −1 s −1 , in the aqueous phase was determined using a relative rate technique with methyl mercury as reference compound. The .OH initiated mercury reaction proceeds via the molecular Hg(I) radical which is oxidised to Hg(II) by dissolv...
Saved in:
Published in: | Atmospheric environment (1994) 2001-06, Vol.35 (17), p.3039-3047 |
---|---|
Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
cited_by | cdi_FETCH-LOGICAL-c465t-cb2de8449248eb22681a93489f6c9c93238c2b1e5ba6c6d961a79fb09d8e637e3 |
---|---|
cites | cdi_FETCH-LOGICAL-c465t-cb2de8449248eb22681a93489f6c9c93238c2b1e5ba6c6d961a79fb09d8e637e3 |
container_end_page | 3047 |
container_issue | 17 |
container_start_page | 3039 |
container_title | Atmospheric environment (1994) |
container_volume | 35 |
creator | Gårdfeldt, Katarina Sommar, Jonas Strömberg, Dan Feng, Xinbin |
description | The rate constant for
Hg
0+
.
OH,
k
Hg
0+
.
OH
=(2.4±0.3)×10
9
M
−1
s
−1
, in the aqueous phase was determined using a relative rate technique with methyl mercury as reference compound. The
.OH initiated mercury reaction proceeds via the molecular Hg(I) radical which is oxidised to Hg(II) by dissolved O
2. The reaction can be of importance under certain atmospheric circumstances, such as when the aqueous phase capacity of forming OH radicals is significant and the gas phase concentration of ozone drops. The same end product, i.e. Hg(II) was observed from the photodegradation of methylmercury hydroxide. In this case, molecular Hg(I) radicals are again likely to be formed after photodegradation of the Hg–C bond with subsequent oxidation. A lifetime of
230
h
of methylmercury at outdoor conditions was estimated due to this reaction. The action of
.OH on methylmercury species also involves breaking of organometallic bonds and formation of Hg(II). Speciation of these reaction products from methylmercury is important for the estimation of biogeochemical cycling of mercury. |
doi_str_mv | 10.1016/S1352-2310(01)00107-8 |
format | article |
fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_18092521</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S1352231001001078</els_id><sourcerecordid>14572349</sourcerecordid><originalsourceid>FETCH-LOGICAL-c465t-cb2de8449248eb22681a93489f6c9c93238c2b1e5ba6c6d961a79fb09d8e637e3</originalsourceid><addsrcrecordid>eNqFkUtLxDAUhYsoOI7-BCEbRRfVPPpIViKDLxiYhboOaXLLRNpmTFqZ_nszL1y6ShbfOedyTpJcEnxHMCnu3wnLaUoZwTeY3GJMcJnyo2RCeMlSyrPsOP4PyGlyFsIXxpiVopwkw2Jtjeqt65CrkepdazVqwevBj6ga0XI03q3HBnllrFZNQKozaLV0vbOdGTQYZEC7duWCPbi00C_H5mBiO9QvAanvAdwQolQFOE9O6ugFF_t3mnw-P33MXtP54uVt9jhPdVbkfaoraiDeL2jGoaK04EQJlnFRF1powSjjmlYE8koVujCiIKoUdYWF4VCwEtg0ud75rryL-aGXrQ0amkZ1m2Mk4VjQnJL_wSwvKctEBPMdqL0LwUMtV962yo-SYLlZQ27XkJuqJSZyu4bkUXe1D1Ah1lh71Wkb_sQZFlFMI_ew4yDW8mPBy6AtdLFn60H30jj7T9Ivxb2ghQ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>14572349</pqid></control><display><type>article</type><title>Oxidation of atomic mercury by hydroxyl radicals and photoinduced decomposition of methylmercury in the aqueous phase</title><source>ScienceDirect Freedom Collection 2022-2024</source><creator>Gårdfeldt, Katarina ; Sommar, Jonas ; Strömberg, Dan ; Feng, Xinbin</creator><creatorcontrib>Gårdfeldt, Katarina ; Sommar, Jonas ; Strömberg, Dan ; Feng, Xinbin</creatorcontrib><description>The rate constant for
Hg
0+
.
OH,
k
Hg
0+
.
OH
=(2.4±0.3)×10
9
M
−1
s
−1
, in the aqueous phase was determined using a relative rate technique with methyl mercury as reference compound. The
.OH initiated mercury reaction proceeds via the molecular Hg(I) radical which is oxidised to Hg(II) by dissolved O
2. The reaction can be of importance under certain atmospheric circumstances, such as when the aqueous phase capacity of forming OH radicals is significant and the gas phase concentration of ozone drops. The same end product, i.e. Hg(II) was observed from the photodegradation of methylmercury hydroxide. In this case, molecular Hg(I) radicals are again likely to be formed after photodegradation of the Hg–C bond with subsequent oxidation. A lifetime of
230
h
of methylmercury at outdoor conditions was estimated due to this reaction. The action of
.OH on methylmercury species also involves breaking of organometallic bonds and formation of Hg(II). Speciation of these reaction products from methylmercury is important for the estimation of biogeochemical cycling of mercury.</description><identifier>ISSN: 1352-2310</identifier><identifier>EISSN: 1873-2844</identifier><identifier>DOI: 10.1016/S1352-2310(01)00107-8</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Applied sciences ; Atmospheric pollution ; Biogeochemical cycling ; Chemical composition and interactions. Ionic interactions and processes ; Earth, ocean, space ; Exact sciences and technology ; External geophysics ; Flux ; Meteorology ; Photolysis ; Pollutants physicochemistry study: properties, effects, reactions, transport and distribution ; Pollution ; Redox reactions</subject><ispartof>Atmospheric environment (1994), 2001-06, Vol.35 (17), p.3039-3047</ispartof><rights>2001 Elsevier Science Ltd</rights><rights>2002 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c465t-cb2de8449248eb22681a93489f6c9c93238c2b1e5ba6c6d961a79fb09d8e637e3</citedby><cites>FETCH-LOGICAL-c465t-cb2de8449248eb22681a93489f6c9c93238c2b1e5ba6c6d961a79fb09d8e637e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>309,310,314,780,784,789,790,23930,23931,25140,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14090162$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Gårdfeldt, Katarina</creatorcontrib><creatorcontrib>Sommar, Jonas</creatorcontrib><creatorcontrib>Strömberg, Dan</creatorcontrib><creatorcontrib>Feng, Xinbin</creatorcontrib><title>Oxidation of atomic mercury by hydroxyl radicals and photoinduced decomposition of methylmercury in the aqueous phase</title><title>Atmospheric environment (1994)</title><description>The rate constant for
Hg
0+
.
OH,
k
Hg
0+
.
OH
=(2.4±0.3)×10
9
M
−1
s
−1
, in the aqueous phase was determined using a relative rate technique with methyl mercury as reference compound. The
.OH initiated mercury reaction proceeds via the molecular Hg(I) radical which is oxidised to Hg(II) by dissolved O
2. The reaction can be of importance under certain atmospheric circumstances, such as when the aqueous phase capacity of forming OH radicals is significant and the gas phase concentration of ozone drops. The same end product, i.e. Hg(II) was observed from the photodegradation of methylmercury hydroxide. In this case, molecular Hg(I) radicals are again likely to be formed after photodegradation of the Hg–C bond with subsequent oxidation. A lifetime of
230
h
of methylmercury at outdoor conditions was estimated due to this reaction. The action of
.OH on methylmercury species also involves breaking of organometallic bonds and formation of Hg(II). Speciation of these reaction products from methylmercury is important for the estimation of biogeochemical cycling of mercury.</description><subject>Applied sciences</subject><subject>Atmospheric pollution</subject><subject>Biogeochemical cycling</subject><subject>Chemical composition and interactions. Ionic interactions and processes</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>Flux</subject><subject>Meteorology</subject><subject>Photolysis</subject><subject>Pollutants physicochemistry study: properties, effects, reactions, transport and distribution</subject><subject>Pollution</subject><subject>Redox reactions</subject><issn>1352-2310</issn><issn>1873-2844</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNqFkUtLxDAUhYsoOI7-BCEbRRfVPPpIViKDLxiYhboOaXLLRNpmTFqZ_nszL1y6ShbfOedyTpJcEnxHMCnu3wnLaUoZwTeY3GJMcJnyo2RCeMlSyrPsOP4PyGlyFsIXxpiVopwkw2Jtjeqt65CrkepdazVqwevBj6ga0XI03q3HBnllrFZNQKozaLV0vbOdGTQYZEC7duWCPbi00C_H5mBiO9QvAanvAdwQolQFOE9O6ugFF_t3mnw-P33MXtP54uVt9jhPdVbkfaoraiDeL2jGoaK04EQJlnFRF1powSjjmlYE8koVujCiIKoUdYWF4VCwEtg0ud75rryL-aGXrQ0amkZ1m2Mk4VjQnJL_wSwvKctEBPMdqL0LwUMtV962yo-SYLlZQ27XkJuqJSZyu4bkUXe1D1Ah1lh71Wkb_sQZFlFMI_ew4yDW8mPBy6AtdLFn60H30jj7T9Ivxb2ghQ</recordid><startdate>20010601</startdate><enddate>20010601</enddate><creator>Gårdfeldt, Katarina</creator><creator>Sommar, Jonas</creator><creator>Strömberg, Dan</creator><creator>Feng, Xinbin</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>7TV</scope></search><sort><creationdate>20010601</creationdate><title>Oxidation of atomic mercury by hydroxyl radicals and photoinduced decomposition of methylmercury in the aqueous phase</title><author>Gårdfeldt, Katarina ; Sommar, Jonas ; Strömberg, Dan ; Feng, Xinbin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c465t-cb2de8449248eb22681a93489f6c9c93238c2b1e5ba6c6d961a79fb09d8e637e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><topic>Applied sciences</topic><topic>Atmospheric pollution</topic><topic>Biogeochemical cycling</topic><topic>Chemical composition and interactions. Ionic interactions and processes</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>External geophysics</topic><topic>Flux</topic><topic>Meteorology</topic><topic>Photolysis</topic><topic>Pollutants physicochemistry study: properties, effects, reactions, transport and distribution</topic><topic>Pollution</topic><topic>Redox reactions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gårdfeldt, Katarina</creatorcontrib><creatorcontrib>Sommar, Jonas</creatorcontrib><creatorcontrib>Strömberg, Dan</creatorcontrib><creatorcontrib>Feng, Xinbin</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Pollution Abstracts</collection><jtitle>Atmospheric environment (1994)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gårdfeldt, Katarina</au><au>Sommar, Jonas</au><au>Strömberg, Dan</au><au>Feng, Xinbin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Oxidation of atomic mercury by hydroxyl radicals and photoinduced decomposition of methylmercury in the aqueous phase</atitle><jtitle>Atmospheric environment (1994)</jtitle><date>2001-06-01</date><risdate>2001</risdate><volume>35</volume><issue>17</issue><spage>3039</spage><epage>3047</epage><pages>3039-3047</pages><issn>1352-2310</issn><eissn>1873-2844</eissn><abstract>The rate constant for
Hg
0+
.
OH,
k
Hg
0+
.
OH
=(2.4±0.3)×10
9
M
−1
s
−1
, in the aqueous phase was determined using a relative rate technique with methyl mercury as reference compound. The
.OH initiated mercury reaction proceeds via the molecular Hg(I) radical which is oxidised to Hg(II) by dissolved O
2. The reaction can be of importance under certain atmospheric circumstances, such as when the aqueous phase capacity of forming OH radicals is significant and the gas phase concentration of ozone drops. The same end product, i.e. Hg(II) was observed from the photodegradation of methylmercury hydroxide. In this case, molecular Hg(I) radicals are again likely to be formed after photodegradation of the Hg–C bond with subsequent oxidation. A lifetime of
230
h
of methylmercury at outdoor conditions was estimated due to this reaction. The action of
.OH on methylmercury species also involves breaking of organometallic bonds and formation of Hg(II). Speciation of these reaction products from methylmercury is important for the estimation of biogeochemical cycling of mercury.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/S1352-2310(01)00107-8</doi><tpages>9</tpages></addata></record> |
fulltext | fulltext |
identifier | ISSN: 1352-2310 |
ispartof | Atmospheric environment (1994), 2001-06, Vol.35 (17), p.3039-3047 |
issn | 1352-2310 1873-2844 |
language | eng |
recordid | cdi_proquest_miscellaneous_18092521 |
source | ScienceDirect Freedom Collection 2022-2024 |
subjects | Applied sciences Atmospheric pollution Biogeochemical cycling Chemical composition and interactions. Ionic interactions and processes Earth, ocean, space Exact sciences and technology External geophysics Flux Meteorology Photolysis Pollutants physicochemistry study: properties, effects, reactions, transport and distribution Pollution Redox reactions |
title | Oxidation of atomic mercury by hydroxyl radicals and photoinduced decomposition of methylmercury in the aqueous phase |
url | http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-24T16%3A24%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=Oxidation%20of%20atomic%20mercury%20by%20hydroxyl%20radicals%20and%20photoinduced%20decomposition%20of%20methylmercury%20in%20the%20aqueous%20phase&rft.jtitle=Atmospheric%20environment%20(1994)&rft.au=G%C3%A5rdfeldt,%20Katarina&rft.date=2001-06-01&rft.volume=35&rft.issue=17&rft.spage=3039&rft.epage=3047&rft.pages=3039-3047&rft.issn=1352-2310&rft.eissn=1873-2844&rft_id=info:doi/10.1016/S1352-2310(01)00107-8&rft_dat=%3Cproquest_cross%3E14572349%3C/proquest_cross%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c465t-cb2de8449248eb22681a93489f6c9c93238c2b1e5ba6c6d961a79fb09d8e637e3%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=14572349&rft_id=info:pmid/&rfr_iscdi=true |