Sunlight Induces the Production of Atmospheric Volatile Organic Compounds (VOCs) from Thermokarst Ponds
Ground subsidence caused by permafrost thawingcauses the formation of thermokarst ponds, where organiccompounds from eroding permafrost accumulate. We photolyzedwater samples from two such ponds in Northern Quebec anddiscovered the emission of volatile organic compounds (VOCs)using mass spectrometry...
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Online Access: | https://hal.science/hal-04308300 https://hal.science/hal-04308300/document https://hal.science/hal-04308300/file/Manuscript.pdf https://doi.org/10.1021/acs.est.3c03303 |
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ftinsu:oai:HAL:hal-04308300v1 2023-12-31T10:21:54+01:00 Sunlight Induces the Production of Atmospheric Volatile Organic Compounds (VOCs) from Thermokarst Ponds Wang, Tao Kalalian, Carmen Fillion, Daniel Perrier, Sébastien Chen, Jianmin Domine, Florent Zhang, Liwu George, Christian Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2023-10-30 https://hal.science/hal-04308300 https://hal.science/hal-04308300/document https://hal.science/hal-04308300/file/Manuscript.pdf https://doi.org/10.1021/acs.est.3c03303 en eng HAL CCSD American Chemical Society info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.est.3c03303 hal-04308300 https://hal.science/hal-04308300 https://hal.science/hal-04308300/document https://hal.science/hal-04308300/file/Manuscript.pdf doi:10.1021/acs.est.3c03303 info:eu-repo/semantics/OpenAccess ISSN: 0013-936X EISSN: 1520-5851 Environmental Science and Technology https://hal.science/hal-04308300 Environmental Science and Technology, 2023, 57 (45), pp.17363-17373. ⟨10.1021/acs.est.3c03303⟩ photochemistry [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2023 ftinsu https://doi.org/10.1021/acs.est.3c03303 2023-12-06T17:23:08Z Ground subsidence caused by permafrost thawingcauses the formation of thermokarst ponds, where organiccompounds from eroding permafrost accumulate. We photolyzedwater samples from two such ponds in Northern Quebec anddiscovered the emission of volatile organic compounds (VOCs)using mass spectrometry. One pond near peat-covered permafrostmounds was organic-rich, while the other near sandy mounds wasorganic-poor. Compounds up to C10 were detected, comprisingthe atoms of O, N, and S. The main compounds were methanol,acetaldehyde, and acetone. Hourly VOC fluxes under actinic fluxessimilar to local solar fluxes might reach up to 1.7 nmol C m−2 s−1.Unexpectedly, the fluxes of VOCs from the organic-poor pondwere greater than those from the organic-rich pond. We suggestthat different segregations of organics at the air/water interface may partly explain this observation. This study indicates that sunlitthermokarst ponds are a significant source of atmospheric VOCs, which may affect the environment and climate via ozone andaerosol formation. Further work is required for understanding the relationship between the pond’s organic composition and VOCemission fluxes. Article in Journal/Newspaper permafrost Thermokarst Institut national des sciences de l'Univers: HAL-INSU Environmental Science & Technology 57 45 17363 17373 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
photochemistry [SDE]Environmental Sciences |
spellingShingle |
photochemistry [SDE]Environmental Sciences Wang, Tao Kalalian, Carmen Fillion, Daniel Perrier, Sébastien Chen, Jianmin Domine, Florent Zhang, Liwu George, Christian Sunlight Induces the Production of Atmospheric Volatile Organic Compounds (VOCs) from Thermokarst Ponds |
topic_facet |
photochemistry [SDE]Environmental Sciences |
description |
Ground subsidence caused by permafrost thawingcauses the formation of thermokarst ponds, where organiccompounds from eroding permafrost accumulate. We photolyzedwater samples from two such ponds in Northern Quebec anddiscovered the emission of volatile organic compounds (VOCs)using mass spectrometry. One pond near peat-covered permafrostmounds was organic-rich, while the other near sandy mounds wasorganic-poor. Compounds up to C10 were detected, comprisingthe atoms of O, N, and S. The main compounds were methanol,acetaldehyde, and acetone. Hourly VOC fluxes under actinic fluxessimilar to local solar fluxes might reach up to 1.7 nmol C m−2 s−1.Unexpectedly, the fluxes of VOCs from the organic-poor pondwere greater than those from the organic-rich pond. We suggestthat different segregations of organics at the air/water interface may partly explain this observation. This study indicates that sunlitthermokarst ponds are a significant source of atmospheric VOCs, which may affect the environment and climate via ozone andaerosol formation. Further work is required for understanding the relationship between the pond’s organic composition and VOCemission fluxes. |
author2 |
Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Wang, Tao Kalalian, Carmen Fillion, Daniel Perrier, Sébastien Chen, Jianmin Domine, Florent Zhang, Liwu George, Christian |
author_facet |
Wang, Tao Kalalian, Carmen Fillion, Daniel Perrier, Sébastien Chen, Jianmin Domine, Florent Zhang, Liwu George, Christian |
author_sort |
Wang, Tao |
title |
Sunlight Induces the Production of Atmospheric Volatile Organic Compounds (VOCs) from Thermokarst Ponds |
title_short |
Sunlight Induces the Production of Atmospheric Volatile Organic Compounds (VOCs) from Thermokarst Ponds |
title_full |
Sunlight Induces the Production of Atmospheric Volatile Organic Compounds (VOCs) from Thermokarst Ponds |
title_fullStr |
Sunlight Induces the Production of Atmospheric Volatile Organic Compounds (VOCs) from Thermokarst Ponds |
title_full_unstemmed |
Sunlight Induces the Production of Atmospheric Volatile Organic Compounds (VOCs) from Thermokarst Ponds |
title_sort |
sunlight induces the production of atmospheric volatile organic compounds (vocs) from thermokarst ponds |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04308300 https://hal.science/hal-04308300/document https://hal.science/hal-04308300/file/Manuscript.pdf https://doi.org/10.1021/acs.est.3c03303 |
genre |
permafrost Thermokarst |
genre_facet |
permafrost Thermokarst |
op_source |
ISSN: 0013-936X EISSN: 1520-5851 Environmental Science and Technology https://hal.science/hal-04308300 Environmental Science and Technology, 2023, 57 (45), pp.17363-17373. ⟨10.1021/acs.est.3c03303⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.est.3c03303 hal-04308300 https://hal.science/hal-04308300 https://hal.science/hal-04308300/document https://hal.science/hal-04308300/file/Manuscript.pdf doi:10.1021/acs.est.3c03303 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1021/acs.est.3c03303 |
container_title |
Environmental Science & Technology |
container_volume |
57 |
container_issue |
45 |
container_start_page |
17363 |
op_container_end_page |
17373 |
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1786832863370412032 |