Simultaneous and Synergic Production of Bioavailable Iron and Reactive Iodine Species in Ice
The bioavailable iron is essential for all living organisms, and the dissolution of iron oxide contained in dust and soil is one of the major sources of bioavailable iron in nature. Iodine in the polar atmosphere is related to ozone depletion, mercury oxidation, and cloud condensation nuclei formati...
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AMER CHEMICAL SOC
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Online Access: | https://oasis.postech.ac.kr/handle/2014.oak/100156 https://doi.org/10.1021/acs.est.8b06659 |
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ftponangunivst:oai:oasis.postech.ac.kr:2014.oak/100156 2023-05-15T13:40:33+02:00 Simultaneous and Synergic Production of Bioavailable Iron and Reactive Iodine Species in Ice Kim, K. Menacherry, S.P.M. Kim, J. Chung, H.Y. Jeong, D. Saiz-Lopez, A. Choi, W. Choi, W. 2019-07 https://oasis.postech.ac.kr/handle/2014.oak/100156 https://doi.org/10.1021/acs.est.8b06659 English eng AMER CHEMICAL SOC ENVIRONMENTAL SCIENCE & TECHNOLOGY Engineering, Environmental Environmental Sciences Engineering Environmental Sciences & Ecology 0013-936X https://oasis.postech.ac.kr/handle/2014.oak/100156 doi:10.1021/acs.est.8b06659 38235 ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.53, no.13, pp.7355 - 7362 000474478300018 2-s2.0-85069267090 BOUNDARY-LAYER HALOGENS ENHANCED DISSOLUTION SEA-ICE COASTAL ACID OXIDE ANTARCTICA REDUCTION OXIDATION Article ART 2019 ftponangunivst https://doi.org/10.1021/acs.est.8b06659 2022-10-20T20:59:29Z The bioavailable iron is essential for all living organisms, and the dissolution of iron oxide contained in dust and soil is one of the major sources of bioavailable iron in nature. Iodine in the polar atmosphere is related to ozone depletion, mercury oxidation, and cloud condensation nuclei formation. Here we show that the chemical reaction between iron oxides and iodide (I-) is markedly accelerated to produce bioavailable iron (Fe(II)(aq)) and tri-iodide (I-3(-): evaporable in the form of I-2) in frozen solution (both with and without light irradiation), while it is negligible in aqueous phase. The freeze-enhanced production of Fe(II)(aq) and triiodide is ascribed to the freeze concentration of iron oxides, iodides, and protons in the ice grain boundaries. The outdoor experiments carried out in midlatitude during a winter day (Pohang, Korea: 36 degrees 0' N, 129 degrees 19' E) and in an Antarctic environment (King George Island: 62 degrees 13' S 58 degrees 47' w) also showed the enhanced generation of Fe(II)(aq) and tri-iodide in ice. This study proposes a previously unknown abiotic mechanism and source of bioavailable iron and active iodine species in the polar environment. The pulse input of bioavailable iron and reactive iodine when ice melts may influence the oceanic primary production and CCN formation. 1 1 N scie scopus Article in Journal/Newspaper Antarc* Antarctic Antarctica King George Island Sea ice Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) Antarctic King George Island Environmental Science & Technology 53 13 7355 7362 |
institution |
Open Polar |
collection |
Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) |
op_collection_id |
ftponangunivst |
language |
English |
topic |
BOUNDARY-LAYER HALOGENS ENHANCED DISSOLUTION SEA-ICE COASTAL ACID OXIDE ANTARCTICA REDUCTION OXIDATION |
spellingShingle |
BOUNDARY-LAYER HALOGENS ENHANCED DISSOLUTION SEA-ICE COASTAL ACID OXIDE ANTARCTICA REDUCTION OXIDATION Kim, K. Menacherry, S.P.M. Kim, J. Chung, H.Y. Jeong, D. Saiz-Lopez, A. Choi, W. Simultaneous and Synergic Production of Bioavailable Iron and Reactive Iodine Species in Ice |
topic_facet |
BOUNDARY-LAYER HALOGENS ENHANCED DISSOLUTION SEA-ICE COASTAL ACID OXIDE ANTARCTICA REDUCTION OXIDATION |
description |
The bioavailable iron is essential for all living organisms, and the dissolution of iron oxide contained in dust and soil is one of the major sources of bioavailable iron in nature. Iodine in the polar atmosphere is related to ozone depletion, mercury oxidation, and cloud condensation nuclei formation. Here we show that the chemical reaction between iron oxides and iodide (I-) is markedly accelerated to produce bioavailable iron (Fe(II)(aq)) and tri-iodide (I-3(-): evaporable in the form of I-2) in frozen solution (both with and without light irradiation), while it is negligible in aqueous phase. The freeze-enhanced production of Fe(II)(aq) and triiodide is ascribed to the freeze concentration of iron oxides, iodides, and protons in the ice grain boundaries. The outdoor experiments carried out in midlatitude during a winter day (Pohang, Korea: 36 degrees 0' N, 129 degrees 19' E) and in an Antarctic environment (King George Island: 62 degrees 13' S 58 degrees 47' w) also showed the enhanced generation of Fe(II)(aq) and tri-iodide in ice. This study proposes a previously unknown abiotic mechanism and source of bioavailable iron and active iodine species in the polar environment. The pulse input of bioavailable iron and reactive iodine when ice melts may influence the oceanic primary production and CCN formation. 1 1 N scie scopus |
author2 |
Choi, W. |
format |
Article in Journal/Newspaper |
author |
Kim, K. Menacherry, S.P.M. Kim, J. Chung, H.Y. Jeong, D. Saiz-Lopez, A. Choi, W. |
author_facet |
Kim, K. Menacherry, S.P.M. Kim, J. Chung, H.Y. Jeong, D. Saiz-Lopez, A. Choi, W. |
author_sort |
Kim, K. |
title |
Simultaneous and Synergic Production of Bioavailable Iron and Reactive Iodine Species in Ice |
title_short |
Simultaneous and Synergic Production of Bioavailable Iron and Reactive Iodine Species in Ice |
title_full |
Simultaneous and Synergic Production of Bioavailable Iron and Reactive Iodine Species in Ice |
title_fullStr |
Simultaneous and Synergic Production of Bioavailable Iron and Reactive Iodine Species in Ice |
title_full_unstemmed |
Simultaneous and Synergic Production of Bioavailable Iron and Reactive Iodine Species in Ice |
title_sort |
simultaneous and synergic production of bioavailable iron and reactive iodine species in ice |
publisher |
AMER CHEMICAL SOC |
publishDate |
2019 |
url |
https://oasis.postech.ac.kr/handle/2014.oak/100156 https://doi.org/10.1021/acs.est.8b06659 |
geographic |
Antarctic King George Island |
geographic_facet |
Antarctic King George Island |
genre |
Antarc* Antarctic Antarctica King George Island Sea ice |
genre_facet |
Antarc* Antarctic Antarctica King George Island Sea ice |
op_relation |
ENVIRONMENTAL SCIENCE & TECHNOLOGY Engineering, Environmental Environmental Sciences Engineering Environmental Sciences & Ecology 0013-936X https://oasis.postech.ac.kr/handle/2014.oak/100156 doi:10.1021/acs.est.8b06659 38235 ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.53, no.13, pp.7355 - 7362 000474478300018 2-s2.0-85069267090 |
op_doi |
https://doi.org/10.1021/acs.est.8b06659 |
container_title |
Environmental Science & Technology |
container_volume |
53 |
container_issue |
13 |
container_start_page |
7355 |
op_container_end_page |
7362 |
_version_ |
1766136949588885504 |