Multiple Sulfur and Oxygen Isotope Measurements on Sulfates from High to Low-Temperature Formation Whitin Volcanic and Anthropogenic Plumes
International audience Variability in volcanic and anthropogenic emissions of sulfur dioxyde is the main source of sulfate aerosols burden in our past and present atmosphere. Most of SO 2 is tough to be oxidized into sulfate within aqueous phase oxydation. Despite a good understanding of the sulfate...
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ftccsdartic:oai:HAL:hal-01686726v1 2023-05-15T16:39:19+02:00 Multiple Sulfur and Oxygen Isotope Measurements on Sulfates from High to Low-Temperature Formation Whitin Volcanic and Anthropogenic Plumes E., Legendre Martin, E. Bekki, Slimane Cartigny, Pierre Institut des Sciences de la Terre de Paris (iSTeP) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) STRATO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS) European Association of Geochemistry and the Geochemical Society Paris, France 2017-08 https://hal.archives-ouvertes.fr/hal-01686726 en eng HAL CCSD hal-01686726 https://hal.archives-ouvertes.fr/hal-01686726 GOLDSCHMIDT 2017 https://hal.archives-ouvertes.fr/hal-01686726 GOLDSCHMIDT 2017, Aug 2017, Paris, France [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDE]Environmental Sciences info:eu-repo/semantics/conferenceObject Poster communications 2017 ftccsdartic 2021-11-21T02:12:40Z International audience Variability in volcanic and anthropogenic emissions of sulfur dioxyde is the main source of sulfate aerosols burden in our past and present atmosphere. Most of SO 2 is tough to be oxidized into sulfate within aqueous phase oxydation. Despite a good understanding of the sulfate aerosols formation according to the commun oxydation pathways (i.e. O 3 , H 2 O 2 , O 2 -TMI) some observations remain mysterious.S-MIF (sulfur anomaly, Δ33S≠0‰) in Archean rocks or in ice core data is thought to result from sulfur photochemistry in low pO 2 atmosphere and so under high levels of solar UV radiation which never occurs at tropospheric level in today's atmosphere. So far, it is the only known S-MIF mechanisms. However, this mechanism cannot explain the small but very significant S-MIF (Δ33S≈0.3‰) measured on sulfate aerosols worldwide urban areas.Here, we present a new data set of oxygen and sulfur isotope composition of sulfate aerosols monitored over the past 25 years in Mexico City and also sulfate extracted from fresh ash from Popocatépetl volcano tropospheric emissions. Multiple S- and O- isotope composition were analysed using SF6 fluorination line and Ag 2 SO 4 pyrolysis method.Sulfate aerosols collected on urban area (low-temperature formation) and sulfate collected on volcanic ash (high and/or low temperature formation) present distinct Δ33S and Δ17O values meaning different origins, intermediates and chemical transformations. Concentrations of chemical compounds, isotopic fractionation values and Raleigh distilation processes allow us to propose, in each case, differents hypothesis on the formation pathways. Conference Object ice core Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Raleigh ENVELOPE(-55.731,-55.731,51.567,51.567) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDE]Environmental Sciences |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDE]Environmental Sciences E., Legendre Martin, E. Bekki, Slimane Cartigny, Pierre Multiple Sulfur and Oxygen Isotope Measurements on Sulfates from High to Low-Temperature Formation Whitin Volcanic and Anthropogenic Plumes |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDE]Environmental Sciences |
description |
International audience Variability in volcanic and anthropogenic emissions of sulfur dioxyde is the main source of sulfate aerosols burden in our past and present atmosphere. Most of SO 2 is tough to be oxidized into sulfate within aqueous phase oxydation. Despite a good understanding of the sulfate aerosols formation according to the commun oxydation pathways (i.e. O 3 , H 2 O 2 , O 2 -TMI) some observations remain mysterious.S-MIF (sulfur anomaly, Δ33S≠0‰) in Archean rocks or in ice core data is thought to result from sulfur photochemistry in low pO 2 atmosphere and so under high levels of solar UV radiation which never occurs at tropospheric level in today's atmosphere. So far, it is the only known S-MIF mechanisms. However, this mechanism cannot explain the small but very significant S-MIF (Δ33S≈0.3‰) measured on sulfate aerosols worldwide urban areas.Here, we present a new data set of oxygen and sulfur isotope composition of sulfate aerosols monitored over the past 25 years in Mexico City and also sulfate extracted from fresh ash from Popocatépetl volcano tropospheric emissions. Multiple S- and O- isotope composition were analysed using SF6 fluorination line and Ag 2 SO 4 pyrolysis method.Sulfate aerosols collected on urban area (low-temperature formation) and sulfate collected on volcanic ash (high and/or low temperature formation) present distinct Δ33S and Δ17O values meaning different origins, intermediates and chemical transformations. Concentrations of chemical compounds, isotopic fractionation values and Raleigh distilation processes allow us to propose, in each case, differents hypothesis on the formation pathways. |
author2 |
Institut des Sciences de la Terre de Paris (iSTeP) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) STRATO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS) European Association of Geochemistry and the Geochemical Society |
format |
Conference Object |
author |
E., Legendre Martin, E. Bekki, Slimane Cartigny, Pierre |
author_facet |
E., Legendre Martin, E. Bekki, Slimane Cartigny, Pierre |
author_sort |
E., Legendre |
title |
Multiple Sulfur and Oxygen Isotope Measurements on Sulfates from High to Low-Temperature Formation Whitin Volcanic and Anthropogenic Plumes |
title_short |
Multiple Sulfur and Oxygen Isotope Measurements on Sulfates from High to Low-Temperature Formation Whitin Volcanic and Anthropogenic Plumes |
title_full |
Multiple Sulfur and Oxygen Isotope Measurements on Sulfates from High to Low-Temperature Formation Whitin Volcanic and Anthropogenic Plumes |
title_fullStr |
Multiple Sulfur and Oxygen Isotope Measurements on Sulfates from High to Low-Temperature Formation Whitin Volcanic and Anthropogenic Plumes |
title_full_unstemmed |
Multiple Sulfur and Oxygen Isotope Measurements on Sulfates from High to Low-Temperature Formation Whitin Volcanic and Anthropogenic Plumes |
title_sort |
multiple sulfur and oxygen isotope measurements on sulfates from high to low-temperature formation whitin volcanic and anthropogenic plumes |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.archives-ouvertes.fr/hal-01686726 |
op_coverage |
Paris, France |
long_lat |
ENVELOPE(-55.731,-55.731,51.567,51.567) |
geographic |
Raleigh |
geographic_facet |
Raleigh |
genre |
ice core |
genre_facet |
ice core |
op_source |
GOLDSCHMIDT 2017 https://hal.archives-ouvertes.fr/hal-01686726 GOLDSCHMIDT 2017, Aug 2017, Paris, France |
op_relation |
hal-01686726 https://hal.archives-ouvertes.fr/hal-01686726 |
_version_ |
1766029650656493568 |