Measurements of peroxides and related species during the 1995 summer intensive of the Southern Oxidants Study in Nashville, Tennessee
Hydroperoxide measurements are presented for 12 flights of the U.S. Department of Energy G‐1 aircraft during the summer 1995 intensive of the Southern Oxidants/Middle Tennessee study. A three‐channel analyzer, utilizing both peroxidase/p‐hydroxy phenylacetic acid (pOHPAA) and ferrous sulfate/benzoic...
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| Veröffentlicht in: | Journal of Geophysical Research: Atmospheres 1998-09, Vol.103 (D17), p.22361-22373 |
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| container_title | Journal of Geophysical Research: Atmospheres |
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| creator | Weinstein‐Lloyd, J. B. Lee, J. H. Daum, P. H. Kleinman, L. I. Nunnermacker, L. J. Springston, S. R. Newman, L. |
| description | Hydroperoxide measurements are presented for 12 flights of the U.S. Department of Energy G‐1 aircraft during the summer 1995 intensive of the Southern Oxidants/Middle Tennessee study. A three‐channel analyzer, utilizing both peroxidase/p‐hydroxy phenylacetic acid (pOHPAA) and ferrous sulfate/benzoic acid (FeBA) reagents permitted continuous measurements of hydrogen peroxide (H2O2), methyl hydroperoxide (CH3OOH or MHP), and hydroxymethyl hydroperoxide (HOCH2OOH or HMHP). The median concentration of total hydroperoxide was 5.2 ppbv, with median concentrations of 2.4, 1.7, and 0.97 ppbv for H2O2, MHP, and HMHP respectively. In the free troposphere, H2O2 concentration correlated with the concentration of its precursors, ozone, and water vapor. H2O2 profiles do not show elevated concentrations in the boundary layer, in contrast to vertical profiles of primary pollutants. The combination of high NOx concentrations that inhibited peroxide formation, and peroxide loss through deposition and reaction with OH, led to markedly lower peroxide concentrations within urban and power plant plumes. Photochemical calculations performed to estimate the magnitude of in‐plume peroxide depression showed reasonable agreement with observations. |
| doi_str_mv | 10.1029/98JD01636 |
| format | Article |
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B. ; Lee, J. H. ; Daum, P. H. ; Kleinman, L. I. ; Nunnermacker, L. J. ; Springston, S. R. ; Newman, L.</creator><creatorcontrib>Weinstein‐Lloyd, J. B. ; Lee, J. H. ; Daum, P. H. ; Kleinman, L. I. ; Nunnermacker, L. J. ; Springston, S. R. ; Newman, L.</creatorcontrib><description>Hydroperoxide measurements are presented for 12 flights of the U.S. Department of Energy G‐1 aircraft during the summer 1995 intensive of the Southern Oxidants/Middle Tennessee study. A three‐channel analyzer, utilizing both peroxidase/p‐hydroxy phenylacetic acid (pOHPAA) and ferrous sulfate/benzoic acid (FeBA) reagents permitted continuous measurements of hydrogen peroxide (H2O2), methyl hydroperoxide (CH3OOH or MHP), and hydroxymethyl hydroperoxide (HOCH2OOH or HMHP). The median concentration of total hydroperoxide was 5.2 ppbv, with median concentrations of 2.4, 1.7, and 0.97 ppbv for H2O2, MHP, and HMHP respectively. In the free troposphere, H2O2 concentration correlated with the concentration of its precursors, ozone, and water vapor. H2O2 profiles do not show elevated concentrations in the boundary layer, in contrast to vertical profiles of primary pollutants. The combination of high NOx concentrations that inhibited peroxide formation, and peroxide loss through deposition and reaction with OH, led to markedly lower peroxide concentrations within urban and power plant plumes. Photochemical calculations performed to estimate the magnitude of in‐plume peroxide depression showed reasonable agreement with observations.</description><identifier>ISSN: 0148-0227</identifier><identifier>EISSN: 2156-2202</identifier><identifier>DOI: 10.1029/98JD01636</identifier><language>eng</language><publisher>Washington, DC: Blackwell Publishing Ltd</publisher><subject>Chemical composition and interactions. 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B.</creatorcontrib><creatorcontrib>Lee, J. H.</creatorcontrib><creatorcontrib>Daum, P. H.</creatorcontrib><creatorcontrib>Kleinman, L. I.</creatorcontrib><creatorcontrib>Nunnermacker, L. J.</creatorcontrib><creatorcontrib>Springston, S. R.</creatorcontrib><creatorcontrib>Newman, L.</creatorcontrib><title>Measurements of peroxides and related species during the 1995 summer intensive of the Southern Oxidants Study in Nashville, Tennessee</title><title>Journal of Geophysical Research: Atmospheres</title><addtitle>J. Geophys. Res</addtitle><description>Hydroperoxide measurements are presented for 12 flights of the U.S. Department of Energy G‐1 aircraft during the summer 1995 intensive of the Southern Oxidants/Middle Tennessee study. A three‐channel analyzer, utilizing both peroxidase/p‐hydroxy phenylacetic acid (pOHPAA) and ferrous sulfate/benzoic acid (FeBA) reagents permitted continuous measurements of hydrogen peroxide (H2O2), methyl hydroperoxide (CH3OOH or MHP), and hydroxymethyl hydroperoxide (HOCH2OOH or HMHP). The median concentration of total hydroperoxide was 5.2 ppbv, with median concentrations of 2.4, 1.7, and 0.97 ppbv for H2O2, MHP, and HMHP respectively. In the free troposphere, H2O2 concentration correlated with the concentration of its precursors, ozone, and water vapor. H2O2 profiles do not show elevated concentrations in the boundary layer, in contrast to vertical profiles of primary pollutants. The combination of high NOx concentrations that inhibited peroxide formation, and peroxide loss through deposition and reaction with OH, led to markedly lower peroxide concentrations within urban and power plant plumes. Photochemical calculations performed to estimate the magnitude of in‐plume peroxide depression showed reasonable agreement with observations.</description><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>Meteorology</subject><issn>0148-0227</issn><issn>2156-2202</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><recordid>eNp1kE1vEzEQhi1EJaLSA__Ah16QWOqv9cbHKoVAlX6oLQL1Ys3uzlKXjRN5dkvzA_jfOEqVW-cyI_t5H2mGsQ9SfJZCuRM3PT8T0mr7hk2ULG2hlFBv2URIMy2EUtU7dkT0KHKZ0hohJ-zfBQKNCZcYB-Krjq8xrZ5Di8QhtjxhDwO2nNbYhPzWjinE33x4QC6dKzmNyyUmHuKAkcITbg3bz9vVmFuK_Cq7YKu-HcZ2k0F-CfTwFPoeP_E7jBGJEN-zgw56wqOXfsh-fP1yN_tWLK7m32eni6LR1qnC5RUaMDgFXVambusOOqVrlQfVNaKVtnGQ13eAVlSiMs7AtEanyrpSbaf1Ifu48zZpRZSw8-sUlpA2Xgq_PaHfnzCzxzt2DdRA3yWITaB9QGnnrDQZO9lhf0OPm9d9_nx-c2aFVDlR7BKBBnzeJyD98bbSVel_Xs794uaXub9ezPy1_g_7149Q</recordid><startdate>19980920</startdate><enddate>19980920</enddate><creator>Weinstein‐Lloyd, J. B.</creator><creator>Lee, J. 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R. ; Newman, L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3692-9227ca4e8a3574bdbfaf23b2dbf2fc0d16c9a6369ae60707494a8be925b72df33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><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>Meteorology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Weinstein‐Lloyd, J. B.</creatorcontrib><creatorcontrib>Lee, J. H.</creatorcontrib><creatorcontrib>Daum, P. H.</creatorcontrib><creatorcontrib>Kleinman, L. I.</creatorcontrib><creatorcontrib>Nunnermacker, L. J.</creatorcontrib><creatorcontrib>Springston, S. R.</creatorcontrib><creatorcontrib>Newman, L.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Journal of Geophysical Research: Atmospheres</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Weinstein‐Lloyd, J. B.</au><au>Lee, J. H.</au><au>Daum, P. H.</au><au>Kleinman, L. I.</au><au>Nunnermacker, L. J.</au><au>Springston, S. R.</au><au>Newman, L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Measurements of peroxides and related species during the 1995 summer intensive of the Southern Oxidants Study in Nashville, Tennessee</atitle><jtitle>Journal of Geophysical Research: Atmospheres</jtitle><addtitle>J. Geophys. Res</addtitle><date>1998-09-20</date><risdate>1998</risdate><volume>103</volume><issue>D17</issue><spage>22361</spage><epage>22373</epage><pages>22361-22373</pages><issn>0148-0227</issn><eissn>2156-2202</eissn><abstract>Hydroperoxide measurements are presented for 12 flights of the U.S. Department of Energy G‐1 aircraft during the summer 1995 intensive of the Southern Oxidants/Middle Tennessee study. A three‐channel analyzer, utilizing both peroxidase/p‐hydroxy phenylacetic acid (pOHPAA) and ferrous sulfate/benzoic acid (FeBA) reagents permitted continuous measurements of hydrogen peroxide (H2O2), methyl hydroperoxide (CH3OOH or MHP), and hydroxymethyl hydroperoxide (HOCH2OOH or HMHP). The median concentration of total hydroperoxide was 5.2 ppbv, with median concentrations of 2.4, 1.7, and 0.97 ppbv for H2O2, MHP, and HMHP respectively. In the free troposphere, H2O2 concentration correlated with the concentration of its precursors, ozone, and water vapor. H2O2 profiles do not show elevated concentrations in the boundary layer, in contrast to vertical profiles of primary pollutants. The combination of high NOx concentrations that inhibited peroxide formation, and peroxide loss through deposition and reaction with OH, led to markedly lower peroxide concentrations within urban and power plant plumes. Photochemical calculations performed to estimate the magnitude of in‐plume peroxide depression showed reasonable agreement with observations.</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/98JD01636</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete; Wiley Free Content; Wiley-Blackwell AGU Digital Library; Alma/SFX Local Collection |
| subjects | Chemical composition and interactions. Ionic interactions and processes Earth, ocean, space Exact sciences and technology External geophysics Meteorology |
| title | Measurements of peroxides and related species during the 1995 summer intensive of the Southern Oxidants Study in Nashville, Tennessee |
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