The gas-phase formation mechanism of iodic acid as an atmospheric aerosol source
Henning Finkenzeller
,
Siddharth Iyer
,
Xu-Cheng He
,
Mario Simon
,
Theodore Koenig
,
Christopher Lee
,
Rashid Valiev
,
Victoria Hofbauer
,
Antonio Amorim
,
Rima Baalbaki
,
Andrea Baccarini
,
Lisa Beck
,
David Bell
,
Lucía Caudillo
,
Dexian Chen
,
Randall Chiu
,
Biwu Chu
,
Lubna Dada
,
Jonathan Duplissy
,
Martin Heinritzi
,
Deniz Kemppainen
,
Changhyuk Kim
,
Jordan Krechmer
,
Andreas Kürten
,
Alexandr Kvashnin
,
Houssni Lamkaddam
,
Chuan Ping Lee
,
Katrianne Lehtipalo
,
Zijun Li
,
Vladimir Makhmutov
,
Hanna Manninen
,
Guillaume Marie
,
Ruby Marten
,
Roy Mauldin
,
Bernhard Mentler
,
Tatjana Müller
,
Tuukka Petäjä
,
Maxim Philippov
,
Ananth Ranjithkumar
,
Birte Rörup
,
Jiali Shen
,
Dominik Stolzenburg
,
Christian Tauber
,
Yee Jun Tham
,
António Tomé
,
Miguel Vazquez-Pufleau
,
Andrea Wagner
,
Dongyu Wang
,
Mingyi Wang
,
Yonghong Wang
,
Stefan Weber
,
Wei Nie
,
Yusheng Wu
,
Mao Xiao
,
Qing Ye
,
Marcel Zauner-Wieczorek
,
Armin Hansel
,
Urs Baltensperger
,
Jérome Brioude
(1)
,
Joachim Curtius
,
Neil Donahue
,
Imad El Haddad
,
Richard Flagan
,
Markku Kulmala
,
Jasper Kirkby
,
Mikko Sipilä
,
Douglas Worsnop
,
Theo Kurten
,
Matti Rissanen
,
Rainer Volkamer
Henning Finkenzeller
- Function : Author
- PersonId : 793722
- ORCID : 0000-0002-8349-3714
Siddharth Iyer
- Function : Author
- PersonId : 1189328
- ORCID : 0000-0001-5989-609X
Xu-Cheng He
- Function : Author
- PersonId : 1189329
- ORCID : 0000-0002-7416-306X
Mario Simon
- Function : Author
Theodore Koenig
- Function : Author
- PersonId : 1189330
- ORCID : 0000-0002-3756-4315
Christopher Lee
- Function : Author
Rashid Valiev
- Function : Author
- PersonId : 1189331
- ORCID : 0000-0002-2088-2608
Victoria Hofbauer
- Function : Author
Antonio Amorim
- Function : Author
Rima Baalbaki
- Function : Author
- PersonId : 1189332
- ORCID : 0000-0002-4480-2107
Andrea Baccarini
- Function : Author
- PersonId : 1189333
- ORCID : 0000-0003-4614-247X
Lisa Beck
- Function : Author
- PersonId : 1189334
- ORCID : 0000-0003-3700-5895
David Bell
- Function : Author
Lucía Caudillo
- Function : Author
Dexian Chen
- Function : Author
Randall Chiu
- Function : Author
Biwu Chu
- Function : Author
- PersonId : 1189335
- ORCID : 0000-0002-7548-5669
Lubna Dada
- Function : Author
- PersonId : 1165426
- ORCID : 0000-0003-1105-9043
Jonathan Duplissy
- Function : Author
- PersonId : 1189336
- ORCID : 0000-0001-8819-0264
- IdRef : 26705131X
Martin Heinritzi
- Function : Author
Deniz Kemppainen
- Function : Author
Changhyuk Kim
- Function : Author
- PersonId : 1189337
- ORCID : 0000-0002-8744-4880
Jordan Krechmer
- Function : Author
- PersonId : 1189338
- ORCID : 0000-0003-3642-0659
Andreas Kürten
- Function : Author
Alexandr Kvashnin
- Function : Author
- PersonId : 1189339
- ORCID : 0000-0001-7218-6738
Houssni Lamkaddam
- Function : Author
- PersonId : 1300227
- ORCID : 0000-0001-5166-6353
- IdRef : 204772095
Chuan Ping Lee
- Function : Author
- PersonId : 1189340
- ORCID : 0000-0003-0051-8179
Katrianne Lehtipalo
- Function : Author
- PersonId : 1189341
- ORCID : 0000-0002-1660-2706
Zijun Li
- Function : Author
Vladimir Makhmutov
- Function : Author
- PersonId : 1189342
- ORCID : 0000-0002-2242-1055
Hanna Manninen
- Function : Author
- PersonId : 1189343
- ORCID : 0000-0002-0419-4020
Guillaume Marie
- Function : Author
Ruby Marten
- Function : Author
- PersonId : 1189344
- ORCID : 0000-0003-0417-4350
Roy Mauldin
- Function : Author
Bernhard Mentler
- Function : Author
- PersonId : 1189345
- ORCID : 0000-0003-3852-0397
Tatjana Müller
- Function : Author
- PersonId : 1189346
- ORCID : 0000-0001-6453-9134
Tuukka Petäjä
- Function : Author
- PersonId : 779400
- ORCID : 0000-0002-1881-9044
Maxim Philippov
- Function : Author
- PersonId : 1189347
- ORCID : 0000-0003-4302-0020
Ananth Ranjithkumar
- Function : Author
Birte Rörup
- Function : Author
Jiali Shen
- Function : Author
Dominik Stolzenburg
- Function : Author
Christian Tauber
- Function : Author
- PersonId : 1189348
- ORCID : 0000-0003-1453-1067
Yee Jun Tham
- Function : Author
- PersonId : 1189349
- ORCID : 0000-0001-7924-5841
António Tomé
- Function : Author
Miguel Vazquez-Pufleau
- Function : Author
Andrea Wagner
- Function : Author
Dongyu Wang
- Function : Author
Mingyi Wang
- Function : Author
Yonghong Wang
- Function : Author
Stefan Weber
- Function : Author
Wei Nie
- Function : Author
- PersonId : 1189350
- ORCID : 0000-0002-6048-0515
Yusheng Wu
- Function : Author
Mao Xiao
- Function : Author
Qing Ye
- Function : Author
Marcel Zauner-Wieczorek
- Function : Author
- PersonId : 1189351
- ORCID : 0000-0002-0867-665X
Armin Hansel
- Function : Author
- PersonId : 1189352
- ORCID : 0000-0002-1062-2394
Urs Baltensperger
- Function : Author
Jérome Brioude
- Function : Author
- PersonId : 797759
- ORCID : 0000-0002-5603-7924
Joachim Curtius
- Function : Author
- PersonId : 775517
- ORCID : 0000-0003-3153-4630
Neil Donahue
- Function : Author
- PersonId : 1189353
- ORCID : 0000-0003-3054-2364
Imad El Haddad
- Function : Author
- PersonId : 1189354
- ORCID : 0000-0002-2461-7238
Richard Flagan
- Function : Author
Markku Kulmala
- Function : Author
- PersonId : 763836
- ORCID : 0000-0003-3464-7825
- IdRef : 15928953X
Jasper Kirkby
- Function : Author
- PersonId : 1189355
- ORCID : 0000-0003-2341-9069
Mikko Sipilä
- Function : Author
- PersonId : 852222
Douglas Worsnop
- Function : Author
Theo Kurten
- Function : Author
- PersonId : 1189356
- ORCID : 0000-0002-6416-4931
Matti Rissanen
- Function : Author
- PersonId : 1189357
- ORCID : 0000-0003-0463-8098
Rainer Volkamer
- Function : Author
- PersonId : 793723
- ORCID : 0000-0002-0899-1369
Abstract
Abstract Iodine is a reactive trace element in atmospheric chemistry that destroys ozone and nucleates particles. Iodine emissions have tripled since 1950 and are projected to keep increasing with rising O 3 surface concentrations. Although iodic acid (HIO 3 ) is widespread and forms particles more efficiently than sulfuric acid, its gas-phase formation mechanism remains unresolved. Here, in CLOUD atmospheric simulation chamber experiments that generate iodine radicals at atmospherically relevant rates, we show that iodooxy hypoiodite, IOIO, is efficiently converted into HIO 3 via reactions (R1) IOIO + O 3 → IOIO 4 and (R2) IOIO 4 + H 2 O → HIO 3 + HOI + (1) O 2 . The laboratory-derived reaction rate coefficients are corroborated by theory and shown to explain field observations of daytime HIO 3 in the remote lower free troposphere. The mechanism provides a missing link between iodine sources and particle formation. Because particulate iodate is readily reduced, recycling iodine back into the gas phase, our results suggest a catalytic role of iodine in aerosol formation.
Domains
Ocean, AtmosphereOrigin | Publisher files allowed on an open archive |
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