The production of sulfate particles through the radiolytic oxidation of sulfur dioxide

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Description

The production of hydroxyl radicals by the radiolytic decomposition of water vapor following alpha decay of {sup 222}Rn can be used to produce an ultrafine sulfuric acid aerosol in the presence of SO{sub 2}. In the past, the production of this aerosol appeared to have a limiting threshold in as much as sufficient conversion of SO{sub 2} to SO{sub 4} must be attained to achieve the concentration required for nucleation. This appeared to occur when the bulk average acidity reached an adequately high value. The threshold curve for the onset of the sulfuric acid aerosol formation is a function of ... continued below

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Pages: (79 p)

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Karpen-Hayes, K. September 13, 1991.

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Description

The production of hydroxyl radicals by the radiolytic decomposition of water vapor following alpha decay of {sup 222}Rn can be used to produce an ultrafine sulfuric acid aerosol in the presence of SO{sub 2}. In the past, the production of this aerosol appeared to have a limiting threshold in as much as sufficient conversion of SO{sub 2} to SO{sub 4} must be attained to achieve the concentration required for nucleation. This appeared to occur when the bulk average acidity reached an adequately high value. The threshold curve for the onset of the sulfuric acid aerosol formation is a function of the H{sub 2}O, SO{sub 2} and Rn concentrations. The hydroxyl radical formation is dependent on the H{sub 2}O and Rn concentrations. The mass conversion rate of SO{sub 2} to H{sub 2}SO{sub 4} has been studied by measuring the airborne H{sub 2}SO{sub 4} concentration by ion chromatography after it has been collected on a filter and leached into solution. 39 refs., 9 figs.

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Pages: (79 p)

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OSTI; NTIS; GPO Dep.

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  • Other Information: Thesis (M.S.)

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  • Other: DE92000970
  • Report No.: DOE/ER/61029-8
  • Grant Number: FG02-90ER61029
  • DOI: 10.2172/5052635 | External Link
  • Office of Scientific & Technical Information Report Number: 5052635
  • Archival Resource Key: ark:/67531/metadc1059194

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  • September 13, 1991

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Jan. 29, 2018, 12:10 p.m.

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Karpen-Hayes, K. The production of sulfate particles through the radiolytic oxidation of sulfur dioxide, report, September 13, 1991; United States. (digital.library.unt.edu/ark:/67531/metadc1059194/: accessed November 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.