Aerosol chemistry of emissions from three contrasting volcanoes in Italy
Volcanoes constitute an important source of aerosol. Here we report the size-resolved compositions of major water-soluble ions in particles collected in near-source emissions from three contrasting volcanoes (Solfatara, Vulcano and Stromboli, in Italy). Concentrations of soluble SO 42-, Cl -, F -, N...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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2004
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| _version_ | 1826272868153950208 |
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| author | Mather, T Oppenheimer, C Allen, A McGonigle, A |
| author_facet | Mather, T Oppenheimer, C Allen, A McGonigle, A |
| author_sort | Mather, T |
| collection | OXFORD |
| description | Volcanoes constitute an important source of aerosol. Here we report the size-resolved compositions of major water-soluble ions in particles collected in near-source emissions from three contrasting volcanoes (Solfatara, Vulcano and Stromboli, in Italy). Concentrations of soluble SO 42-, Cl -, F -, NO 3-, H +, K +, Na +, NH 4+, Ca 2+ and Mg 2+ were determined in 11 particle size bins from 0.069 to >25.5 μm in diameter. Soluble ions were most concentrated in the emissions from Solfatara and Stromboli. At Solfatara the major ions were NH 4+ and Cl -, tightly correlated in ∼0.8-1.5 μm diameter particles, strongly suggesting speciation as NH 4Cl. At Stromboli enhanced levels of SO 42-, H +, Na +, K + and NH 4+ were present in ∼0.5-1.5 μm diameter particles. Near-source soluble sulphate was observed in the plumes from Stromboli and Vulcano, with that from Stromboli in much higher concentration (0.94-2.14 compared with 0.07-0.13 μmol m -3). Comparing SO 42- measurements from Vulcano to those from other volcanic systems suggests that near-source sulphate aerosol emissions scale with SO 2 and contribute ∼0.03-0.05 Tg yr -1 of sulphur to the atmosphere. Simple calculations suggest that all the particles containing these soluble ions will act as cloud condensation nuclei at typical atmospheric supersaturations. © 2004 Elsevier Ltd. All rights reserved. |
| first_indexed | 2024-03-06T22:19:22Z |
| format | Journal article |
| id | oxford-uuid:5481573b-0b10-47cf-8769-910a8f4c2bd4 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:19:22Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | oxford-uuid:5481573b-0b10-47cf-8769-910a8f4c2bd42022-03-26T16:38:15ZAerosol chemistry of emissions from three contrasting volcanoes in ItalyJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:5481573b-0b10-47cf-8769-910a8f4c2bd4EnglishSymplectic Elements at Oxford2004Mather, TOppenheimer, CAllen, AMcGonigle, AVolcanoes constitute an important source of aerosol. Here we report the size-resolved compositions of major water-soluble ions in particles collected in near-source emissions from three contrasting volcanoes (Solfatara, Vulcano and Stromboli, in Italy). Concentrations of soluble SO 42-, Cl -, F -, NO 3-, H +, K +, Na +, NH 4+, Ca 2+ and Mg 2+ were determined in 11 particle size bins from 0.069 to >25.5 μm in diameter. Soluble ions were most concentrated in the emissions from Solfatara and Stromboli. At Solfatara the major ions were NH 4+ and Cl -, tightly correlated in ∼0.8-1.5 μm diameter particles, strongly suggesting speciation as NH 4Cl. At Stromboli enhanced levels of SO 42-, H +, Na +, K + and NH 4+ were present in ∼0.5-1.5 μm diameter particles. Near-source soluble sulphate was observed in the plumes from Stromboli and Vulcano, with that from Stromboli in much higher concentration (0.94-2.14 compared with 0.07-0.13 μmol m -3). Comparing SO 42- measurements from Vulcano to those from other volcanic systems suggests that near-source sulphate aerosol emissions scale with SO 2 and contribute ∼0.03-0.05 Tg yr -1 of sulphur to the atmosphere. Simple calculations suggest that all the particles containing these soluble ions will act as cloud condensation nuclei at typical atmospheric supersaturations. © 2004 Elsevier Ltd. All rights reserved. |
| spellingShingle | Mather, T Oppenheimer, C Allen, A McGonigle, A Aerosol chemistry of emissions from three contrasting volcanoes in Italy |
| title | Aerosol chemistry of emissions from three contrasting volcanoes in Italy |
| title_full | Aerosol chemistry of emissions from three contrasting volcanoes in Italy |
| title_fullStr | Aerosol chemistry of emissions from three contrasting volcanoes in Italy |
| title_full_unstemmed | Aerosol chemistry of emissions from three contrasting volcanoes in Italy |
| title_short | Aerosol chemistry of emissions from three contrasting volcanoes in Italy |
| title_sort | aerosol chemistry of emissions from three contrasting volcanoes in italy |
| work_keys_str_mv | AT mathert aerosolchemistryofemissionsfromthreecontrastingvolcanoesinitaly AT oppenheimerc aerosolchemistryofemissionsfromthreecontrastingvolcanoesinitaly AT allena aerosolchemistryofemissionsfromthreecontrastingvolcanoesinitaly AT mcgoniglea aerosolchemistryofemissionsfromthreecontrastingvolcanoesinitaly |