{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,11]],"date-time":"2026-08-11T16:25:24Z","timestamp":1786465524833,"version":"build-2736575974"},"reference-count":32,"publisher":"American Chemical Society (ACS)","issue":"31","license":[{"start":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T00:00:00Z","timestamp":1785369600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001862","name":"Svenska Forskningsr\u00e5det Formas","doi-asserted-by":"publisher","award":["2020-01544"],"award-info":[{"award-number":["2020-01544"]}],"id":[{"id":"10.13039\/501100001862","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100006190","name":"Politechnika Gdanska","doi-asserted-by":"publisher","award":["DEC-4\/1\/2024\/IDUB\/II.1b\/Am"],"award-info":[{"award-number":["DEC-4\/1\/2024\/IDUB\/II.1b\/Am"]}],"id":[{"id":"10.13039\/501100006190","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,8,11]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Human skin oil transferred to indoor surfaces is an important ozone sink and source of oxidation products, yet the effects of soiling mode and environmental conditions on this chemistry remain poorly understood. We examined ozone-initiated reactions on glass plates soiled by long-term natural accumulation, fresh squame deposition, or direct dermal contact at 20% or 70% relative humidity, air change rates of 6 or 12 h\u20131, and 42 \u00b1 5 ppb ozone. Gas-phase products were quantified by PTR-ToF-MS, and surface residues by GC-MS. Ozone exposure consumed 22\u201398% of the squalene, depending on the soiling mode. Major gas-phase products included acetone, 4-oxopentanal (4OPA), and 6-methyl-5-hepten-2-one (6MHO); condensed-phase products included geranyl acetone (GA) and C22-aldehyde (4,9,13,17-tetramethyl-4,8,12,16-octadecatetraenal). Elevated relative humidity and lower air change rates enhanced ozone uptake and gas-phase product formation. Gas-phase product yields depended on relative humidity but not systematically on ventilation rate, whereas surface-bound product yields showed no systematic dependence on either parameter. Plates soiled by direct contact produced more than an order of magnitude higher volatile product mixing ratios than plates soiled with freshly deposited squames. These results show that soiling mode and environmental conditions strongly influence ozone-driven chemistry on skin-oil-contaminated indoor surfaces.<\/jats:p>","DOI":"10.1021\/acs.est.6c09797","type":"journal-article","created":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T13:20:20Z","timestamp":1785849620000},"page":"21837-21848","source":"Crossref","is-referenced-by-count":0,"title":["Ozone Reactions\nwith Indoor Surfaces Soiled by Human\nSkin Oil are Impacted by Manner of Soiling, Relative Humidity, and\nAir Change Rate"],"prefix":"10.1021","volume":"60","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8433-917X","authenticated-orcid":true,"given":"Wojciech","family":"Wojnowski","sequence":"first","affiliation":[{"name":"Gdan\u0301sk University of Technology , , ,","place":["Gdan\u0301sk, Poland, 80-233"]},{"name":"University of Oslo , , ,","place":["Oslo, Norway, N-0315"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5050-3018","authenticated-orcid":true,"given":"Armin","family":"Wisthaler","sequence":"additional","affiliation":[{"name":"University of Oslo , , ,","place":["Oslo, Norway, N-0315"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomas","family":"Mikoviny","sequence":"additional","affiliation":[{"name":"University of Oslo , , ,","place":["Oslo, Norway, N-0315"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6107-8336","authenticated-orcid":true,"given":"Gabriel","family":"Beko\u0308","sequence":"additional","affiliation":[{"name":"Technical University of Denmark , , ,","place":["Lyngby, Denmark, DK-2800"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9097-5850","authenticated-orcid":true,"given":"Charles J.","family":"Weschler","sequence":"additional","affiliation":[{"name":"Technical University of Denmark , , ,","place":["Lyngby, Denmark, DK-2800"]},{"name":"Rutgers University , , , ,","place":["Piscataway, New Jersey, United States, 08854"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ann","family":"Sjo\u0308blom","sequence":"additional","affiliation":[{"name":"IVL Swedish Environmental Research Institute , , ,","place":["Go\u0308teborg, Sweden, SE-400 14"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6580-8911","authenticated-orcid":true,"given":"Sarka","family":"Langer","sequence":"additional","affiliation":[{"name":"IVL Swedish Environmental Research Institute , , ,","place":["Go\u0308teborg, Sweden, SE-400 14"]},{"name":"Chalmers University of Technology , , ,","place":["Go\u0308teborg, Sweden, 412 96"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,7,30]]},"reference":[{"issue":"4","key":"2026081110093312100_cit1","doi-asserted-by":"publisher","first-page":"640","DOI":"10.1039\/D3EA00008G","article-title":"Human Skin Oil: A Major Ozone Reactant Indoors","volume":"3","author":"Weschler","year":"2023","journal-title":"Environ. 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Technol."},{"issue":"15","key":"2026081110093312100_cit5","doi-asserted-by":"publisher","first-page":"6568","DOI":"10.1073\/pnas.0904498106","article-title":"Reactions of Ozone\nwith Human Skin Lipids: Sources\nof Carbonyls, Dicarbonyls, and Hydroxycarbonyls in Indoor Air","volume":"107","author":"Wisthaler","year":"2010","journal-title":"Proc. Natl. Acad. Sci. U. S. A."},{"key":"2026081110093312100_cit6","doi-asserted-by":"publisher","first-page":"139","DOI":"10.1007\/978-3-319-09943-9_10","article-title":"Sapienic Acid:\nSpecies-Specific Fatty Acid Metabolism of the Human Sebaceous Gland","volume-title":"Lipids and Skin Health","author":"Prouty","year":"2015"},{"issue":"24","key":"2026081110093312100_cit7","doi-asserted-by":"publisher","first-page":"14441","DOI":"10.1021\/acs.est.9b05957","article-title":"Heterogeneous Ozonolysis of Squalene:\nGas-Phase Products\nDepend on Water Vapor Concentration","volume":"53","author":"Arata","year":"2019","journal-title":"Environ.\nSci. 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Technol."},{"issue":"8","key":"2026081110093312100_cit31","doi-asserted-by":"publisher","first-page":"4838","DOI":"10.1021\/acs.est.1c08764","article-title":"Emission Rates\nof Volatile Organic Compounds from Humans","volume":"56","author":"Wang","year":"2022","journal-title":"Environ.\nSci. Technol."},{"issue":"1","key":"2026081110093312100_cit32","doi-asserted-by":"publisher","first-page":"3","DOI":"10.1021\/acsenvironau.3c00043","article-title":"Emissions of Volatile Organic Compounds from Human\nOccupants in a Student Office: Dependence on Ozone Concentration","volume":"4","author":"Qu","year":"2024","journal-title":"ACS Environ. Au"}],"container-title":["Environmental Science &amp;\nTechnology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.acs.org\/doi\/pdf\/10.1021\/acs.est.6c09797","content-type":"application\/pdf","content-version":"vor","intended-application":"unspecified"},{"URL":"https:\/\/pubs.acs.org\/esthag\/article-pdf\/60\/31\/21837\/66334895\/acs.est.6c09797.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.acs.org\/esthag\/article-pdf\/60\/31\/21837\/66334895\/acs.est.6c09797.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,11]],"date-time":"2026-08-11T15:01:53Z","timestamp":1786460513000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.acs.org\/esthag\/article\/60\/31\/21837\/5237034\/Ozone-Reactions-with-Indoor-Surfaces-Soiled-by"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,7,30]]},"references-count":32,"journal-issue":{"issue":"31","published-online":{"date-parts":[[2026,7,30]]},"published-print":{"date-parts":[[2026,8,11]]}},"URL":"https:\/\/doi.org\/10.1021\/acs.est.6c09797","relation":{},"ISSN":["0013-936X","1520-5851"],"issn-type":[{"value":"0013-936X","type":"print"},{"value":"1520-5851","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,7,30]]}}}