Nitrogen and sulfur compounds in coastal Antarctic fine aerosol particles—an insight using non-destructive X-ray microanalytical methods
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| Title: | Nitrogen and sulfur compounds in coastal Antarctic fine aerosol particles—an insight using non-destructive X-ray microanalytical methods |
|---|---|
| Authors: | Osán, J.1 osan@sunserv.kfki.hu, Török, S.1, Beckhoff, B.2, Ulm, G.2, Hwang, H.3, Ro, C.-U.3, Abete, C.4, Fuoco, R.5 |
| Source: | Atmospheric Environment. Aug2006, Vol. 40 Issue 25, p4691-4702. 12p. |
| Subject Terms: | *Nitrogen, *Air pollution, X-ray absorption near edge structure, Atomization |
| Abstract: | Abstract: The capabilities of X-ray microanalytical methods, such as a near edge X-ray absorption fine structure (NEXAFS) investigation in conjunction with total reflection X-ray fluorescence (TXRF) analysis, as well as low-Z particle electron probe X-ray microanalysis (EPMA) to characterize fine Antarctic aerosol samples are demonstrated. Both techniques provided information on low-Z elements such as C, N and O. Size-segregated fine aerosol samples were collected at the Italian base at Terra Nova Bay (Antarctica) in February 2004. For comparative purposes, aerosol samples were also collected near the sea-shore in Alghero (Sardinia, Italy), in June 2004. The TXRF-NEXAFS measurements were carried out at the PGM monochromator beamline for undulator radiation in the PTB laboratory at the electron storage ring BESSY II. It was possible to quantify the molar ratio of ammonium and nitrate based on linear combinations of standard reference spectra of (NH4)2SO4 and NaNO3. Using TXRF-NEXAFS, the ammonium-to-nitrate ratio was determined in Antarctic fine aerosols collected from less than 2m3 of air, i.e. considerably lower than the sampling volumes usually used for ion chromatography analyses (30m3). This reduced sampling volume can enable the characterization of Antarctic aerosols to be done in higher temporal resolution. For Antarctic fine aerosols in the size range of 0.25–0.5μm, nitrogen was observed to be present as almost entirely ammonium species. When the size of aerosol particles increases in the range of 0.25–2μm, the content of ammonium decreases and yet the content of nitrate increases. An aerosol sample collected at Terra Nova Bay was investigated by the use of low-Z particle EPMA at a liquid nitrogen temperature in order to minimize beam damage of nitrogen-rich particles. Single-particle analytical results of 160 individual particles supported the TXRF-NEXAFS''s observation that both ammonium-rich and nitrate-rich particles exist in the size range of 1–2μm. Some particles were observed to contain both ammonium and nitrate species and yet pure ammonium nitrate particles were not encountered. The stoichiometry of the main chemical component of particles containing nitrogen and sulfur as major elements was found to be NH4HSO4. [Copyright &y& Elsevier] |
| Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | GreenFILE |
| FullText | Text: Availability: 0 |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 21514988 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Nitrogen and sulfur compounds in coastal Antarctic fine aerosol particles—an insight using non-destructive X-ray microanalytical methods – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Osán%2C+J%2E%22">Osán, J.</searchLink><relatesTo>1</relatesTo><i> osan@sunserv.kfki.hu</i><br /><searchLink fieldCode="AR" term="%22Török%2C+S%2E%22">Török, S.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Beckhoff%2C+B%2E%22">Beckhoff, B.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Ulm%2C+G%2E%22">Ulm, G.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Hwang%2C+H%2E%22">Hwang, H.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Ro%2C+C%2E-U%2E%22">Ro, C.-U.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Abete%2C+C%2E%22">Abete, C.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Fuoco%2C+R%2E%22">Fuoco, R.</searchLink><relatesTo>5</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Atmospheric+Environment%22">Atmospheric Environment</searchLink>. Aug2006, Vol. 40 Issue 25, p4691-4702. 12p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Nitrogen%22">Nitrogen</searchLink><br />*<searchLink fieldCode="DE" term="%22Air+pollution%22">Air pollution</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+absorption+near+edge+structure%22">X-ray absorption near edge structure</searchLink><br /><searchLink fieldCode="DE" term="%22Atomization%22">Atomization</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: The capabilities of X-ray microanalytical methods, such as a near edge X-ray absorption fine structure (NEXAFS) investigation in conjunction with total reflection X-ray fluorescence (TXRF) analysis, as well as low-Z particle electron probe X-ray microanalysis (EPMA) to characterize fine Antarctic aerosol samples are demonstrated. Both techniques provided information on low-Z elements such as C, N and O. Size-segregated fine aerosol samples were collected at the Italian base at Terra Nova Bay (Antarctica) in February 2004. For comparative purposes, aerosol samples were also collected near the sea-shore in Alghero (Sardinia, Italy), in June 2004. The TXRF-NEXAFS measurements were carried out at the PGM monochromator beamline for undulator radiation in the PTB laboratory at the electron storage ring BESSY II. It was possible to quantify the molar ratio of ammonium and nitrate based on linear combinations of standard reference spectra of (NH4)2SO4 and NaNO3. Using TXRF-NEXAFS, the ammonium-to-nitrate ratio was determined in Antarctic fine aerosols collected from less than 2m3 of air, i.e. considerably lower than the sampling volumes usually used for ion chromatography analyses (30m3). This reduced sampling volume can enable the characterization of Antarctic aerosols to be done in higher temporal resolution. For Antarctic fine aerosols in the size range of 0.25–0.5μm, nitrogen was observed to be present as almost entirely ammonium species. When the size of aerosol particles increases in the range of 0.25–2μm, the content of ammonium decreases and yet the content of nitrate increases. An aerosol sample collected at Terra Nova Bay was investigated by the use of low-Z particle EPMA at a liquid nitrogen temperature in order to minimize beam damage of nitrogen-rich particles. Single-particle analytical results of 160 individual particles supported the TXRF-NEXAFS''s observation that both ammonium-rich and nitrate-rich particles exist in the size range of 1–2μm. Some particles were observed to contain both ammonium and nitrate species and yet pure ammonium nitrate particles were not encountered. The stoichiometry of the main chemical component of particles containing nitrogen and sulfur as major elements was found to be NH4HSO4. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.atmosenv.2006.04.033 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 4691 Subjects: – SubjectFull: Nitrogen Type: general – SubjectFull: Air pollution Type: general – SubjectFull: X-ray absorption near edge structure Type: general – SubjectFull: Atomization Type: general Titles: – TitleFull: Nitrogen and sulfur compounds in coastal Antarctic fine aerosol particles—an insight using non-destructive X-ray microanalytical methods Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Osán, J. – PersonEntity: Name: NameFull: Török, S. – PersonEntity: Name: NameFull: Beckhoff, B. – PersonEntity: Name: NameFull: Ulm, G. – PersonEntity: Name: NameFull: Hwang, H. – PersonEntity: Name: NameFull: Ro, C.-U. – PersonEntity: Name: NameFull: Abete, C. – PersonEntity: Name: NameFull: Fuoco, R. IsPartOfRelationships: – BibEntity: Dates: – D: 11 M: 08 Text: Aug2006 Type: published Y: 2006 Identifiers: – Type: issn-print Value: 13522310 Numbering: – Type: volume Value: 40 – Type: issue Value: 25 Titles: – TitleFull: Atmospheric Environment Type: main |
| ResultId | 1 |
