{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,7]],"date-time":"2026-11-07T15:27:56Z","timestamp":1794065276274,"version":"4.8.0"},"reference-count":45,"publisher":"American Chemical Society (ACS)","issue":"12","license":[{"start":{"date-parts":[[2026,11,7]],"date-time":"2026-11-07T00:00:00Z","timestamp":1794009600000},"content-version":"vor","delay-in-days":365,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000879","name":"Alfred P. Sloan Foundation","doi-asserted-by":"publisher","award":["G-2018-11096"],"award-info":[{"award-number":["G-2018-11096"]}],"id":[{"id":"10.13039\/100000879","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["1852977"],"award-info":[{"award-number":["1852977"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["AGS-1638672"],"award-info":[{"award-number":["AGS-1638672"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,12,12]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Air cleaning devices, or \u201cair cleaners\u201d, have the potential to improve indoor air by decreasing levels of air pollutants, including volatile organic compounds (VOCs), in indoor environments. Many commercial air cleaners aimed at removing VOCs adopt chemically active technologies, such as oxidation-based chemistry, in addition to (or instead of) physical removal. However, these technologies risk forming unwanted oxidation byproducts that may cause adverse health effects, which can offset (or even outweigh) the benefits of decreasing the number of VOCs. Studies characterizing byproduct formation are generally limited; most such studies were restricted to a single or a few model VOC species as challenge compounds. The composition of indoor air, however, can be highly complex, containing a variety of VOC classes that may not be well represented by a few model species. Here, we present a case study in which we challenge an oxidation-based air cleaner (which uses photoelectrochemical oxidation) with a real-world VOC mixture emitted from spraying a commercial air freshener. This mixture contains a complex suite of organic compounds commonly found in indoor environments, including organic solvents (most importantly ethanol), fragrance agents, and other hydrocarbons and oxygenates of various molecular sizes. Experiments were conducted in a controlled environmental chamber with a suite of real-time analytical instruments to measure the identity and concentration of a wide range of VOCs. We find that the VOC composition changes drastically within a few hours due to running the air cleaner, characterized by the decrease in ethanol and large species (those with 4 or more carbon atoms) and the formation of C1\u2013C3 oxygenated byproducts; no large oxidation products are observed. A substantial fraction of ethanol (and possibly other VOCs) is converted to acetaldehyde and formaldehyde, whose levels were observed to increase over the course of several hours during the operation of the air cleaner. Our results suggest the importance of ethanol, a ubiquitous VOC in indoor air, in evaluating the benefits and risks of indoor air cleaners, as ethanol can be efficiently oxidized to byproducts known to negatively impact human health.<\/jats:p>","DOI":"10.1021\/acsestair.5c00294","type":"journal-article","created":{"date-parts":[[2025,11,7]],"date-time":"2025-11-07T14:06:32Z","timestamp":1762524392000},"page":"2991-2999","source":"Crossref","is-referenced-by-count":0,"title":["Changes in Volatile\nOrganic Compound Composition from\nan Oxidation-Based Air Cleaner"],"prefix":"10.1021","volume":"2","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3797-8988","authenticated-orcid":true,"given":"Qing","family":"Ye","sequence":"first","affiliation":[{"name":"Massachusetts Institute of Technology , , , ,","place":["Cambridge, Massachusetts, United States, 02139"]},{"name":"NSF National Center for Atmospheric Research , , , ,","place":["Boulder, Colorado, United States, 80301"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Isabel S.","family":"Albores","sequence":"additional","affiliation":[{"name":"Massachusetts Institute of Technology , , , ,","place":["Cambridge, Massachusetts, United States, 02139"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seamus C.","family":"Frey","sequence":"additional","affiliation":[{"name":"Massachusetts Institute of Technology , , , ,","place":["Cambridge, Massachusetts, United States, 02139"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Erik","family":"Helstrom","sequence":"additional","affiliation":[{"name":"Massachusetts Institute of Technology , , , ,","place":["Cambridge, Massachusetts, United States, 02139"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3642-0659","authenticated-orcid":true,"given":"Jordan E.","family":"Krechmer","sequence":"additional","affiliation":[{"name":"Aerodyne Research Incorporated , , , ,","place":["Billerica, Massachusetts, United States, 01821"]},{"name":"Now at Osmo Laboratories PBC , , ,","place":["Somerville, Massachusetts, United States, 02144"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0725-6108","authenticated-orcid":true,"given":"Yaowei","family":"Li","sequence":"additional","affiliation":[{"name":"Harvard University , , , ,","place":["Cambridge, Massachusetts, United States, 02138"]},{"name":"Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology , , , ,","place":["Cambridge, Massachusetts, United States, 02139"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8291-8242","authenticated-orcid":true,"given":"Joshua D.","family":"Shutter","sequence":"additional","affiliation":[{"name":"Harvard University , , , ,","place":["Cambridge, Massachusetts, United States, 02138"]},{"name":"University of Minnesota , , , ,","place":["St. Paul, Minnesota, United States, 55108"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joshua L.","family":"Cox","sequence":"additional","affiliation":[{"name":"Harvard University , , , ,","place":["Cambridge, Massachusetts, United States, 02138"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manjula R.","family":"Canagaratna","sequence":"additional","affiliation":[{"name":"Aerodyne Research Incorporated , , , ,","place":["Billerica, Massachusetts, United States, 01821"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1442-6200","authenticated-orcid":true,"given":"Frank N.","family":"Keutsch","sequence":"additional","affiliation":[{"name":"Harvard University , , , ,","place":["Cambridge, Massachusetts, United States, 02138"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6275-521X","authenticated-orcid":true,"given":"Jesse H.","family":"Kroll","sequence":"additional","affiliation":[{"name":"Massachusetts Institute of Technology , , , ,","place":["Cambridge, Massachusetts, United States, 02139"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2025,11,7]]},"reference":[{"issue":"3","key":"2026110710064083900_cit1","doi-asserted-by":"publisher","first-page":"231","DOI":"10.1038\/sj.jea.7500165","article-title":"The National\nHuman Activity Pattern Survey (NHAPS): A Resource for Assessing Exposure\nto Environmental Pollutants","volume":"11","author":"Klepeis","year":"2001","journal-title":"J. Expo. Sci. Environ.\nEpidemiol."},{"issue":"22","key":"2026110710064083900_cit2","doi-asserted-by":"publisher","first-page":"13053","DOI":"10.1021\/acs.est.9b04689","article-title":"Budgets\nof Organic Carbon Composition and Oxidation in Indoor Air","volume":"53","author":"Price","year":"2019","journal-title":"Environ. Sci. Technol."},{"issue":"6","key":"2026110710064083900_cit3","doi-asserted-by":"publisher","first-page":"2099","DOI":"10.1111\/ina.12906","article-title":"Volatile\nOrganic Compound Emissions\nduring HOMEChem","volume":"31","author":"Arata","year":"2021","journal-title":"Indoor Air"},{"issue":"8","key":"2026110710064083900_cit4","doi-asserted-by":"publisher","first-page":"1280","DOI":"10.1039\/C9EM00228F","article-title":"Overview of HOMEChem: House Observations\nof Microbial and Environmental Chemistry","volume":"21","author":"Farmer","year":"2019","journal-title":"Environ.\nSci. Process. Impacts"},{"issue":"15","key":"2026110710064083900_cit5","doi-asserted-by":"publisher","first-page":"10255","DOI":"10.1021\/acs.est.1c01337","article-title":"Evaluating Indoor\nAir Chemical Diversity, Indoor-to-Outdoor Emissions, and Surface Reservoirs\nUsing High-Resolution Mass Spectrometry","volume":"55","author":"Sheu","year":"2021","journal-title":"Environ.\nSci. Technol."},{"issue":"12","key":"2026110710064083900_cit6","doi-asserted-by":"publisher","first-page":"1020","DOI":"10.1021\/acs.estlett.1c00773","article-title":"Real-Time Laboratory Measurements\nof VOC Emissions, Removal Rates, and Byproduct Formation from Consumer-Grade\nOxidation-Based Air Cleaners","volume":"8","author":"Ye","year":"2021","journal-title":"Environ. Sci.\nTechnol. Lett."},{"key":"2026110710064083900_cit7","doi-asserted-by":"publisher","DOI":"10.1016\/j.buildenv.2021.107750","article-title":"Evaluating a Commercially Available\nIn-Duct Bipolar\nIonization Device for Pollutant Removal and Potential Byproduct Formation","volume":"195","author":"Zeng","year":"2021","journal-title":"Build. Environ."},{"issue":"18","key":"2026110710064083900_cit8","doi-asserted-by":"publisher","first-page":"7916","DOI":"10.1021\/acs.est.3c09331","article-title":"Quantification\nof Byproduct Formation from Portable Air Cleaners Using a Proposed\nStandard Test Method","volume":"58","author":"Link","year":"2024","journal-title":"Environ. Sci. Technol."},{"issue":"8","key":"2026110710064083900_cit9","doi-asserted-by":"publisher","first-page":"668","DOI":"10.1021\/acs.estlett.3c00314","article-title":"Significant Production\nof Ozone from Germicidal UV Lights at 222 nm","volume":"10","author":"Peng","year":"2023","journal-title":"Environ. Sci. Technol. Lett."},{"issue":"42","key":"2026110710064083900_cit10","doi-asserted-by":"publisher","first-page":"15990","DOI":"10.1021\/acs.est.3c05680","article-title":"Indoor\nAir Quality Implications of Germicidal 222 nm Light","volume":"57","author":"Barber","year":"2023","journal-title":"Environ. Sci. Technol."},{"issue":"7","key":"2026110710064083900_cit11","doi-asserted-by":"publisher","first-page":"725","DOI":"10.1021\/acsestair.4c00065","article-title":"Effects\nof 222 nm Germicidal Ultraviolet Light on Aerosol and VOC Formation\nfrom Limonene","volume":"1","author":"Jenks","year":"2024","journal-title":"ACS EST Air"},{"issue":"8","key":"2026110710064083900_cit12","doi-asserted-by":"publisher","first-page":"691","DOI":"10.1021\/acs.estlett.1c00416","article-title":"Formation\nof Oxidized Gases and Secondary Organic Aerosol from a Commercial\nOxidant-Generating Electronic Air Cleaner","volume":"8","author":"Joo","year":"2021","journal-title":"Environ.\nSci. Technol. Lett."},{"key":"2026110710064083900_cit13","doi-asserted-by":"publisher","DOI":"10.1039\/D4EM00384E","article-title":"Organic Aerosol Formation from 222\nnm Germicidal Light:\nOzone-Initiated vs. Non-Ozone Pathways","volume":"27","author":"Goss","year":"2025","journal-title":"Environ.\nSci. Process. Impacts"},{"issue":"18","key":"2026110710064083900_cit14","doi-asserted-by":"publisher","first-page":"12172","DOI":"10.1021\/acs.est.1c02582","article-title":"Unintended Consequences of Air Cleaning Chemistry","volume":"55","author":"Collins","year":"2021","journal-title":"Environ. Sci. 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Environ."},{"issue":"2","key":"2026110710064083900_cit17","doi-asserted-by":"publisher","first-page":"160","DOI":"10.1080\/10789669.2014.975057","article-title":"Evaluation of Ultraviolet\u2013Photocatalytic\nOxidation of Light Alcohols at Sub-Parts per Million Concentrations","volume":"21","author":"Aghighi","year":"2015","journal-title":"Sci. Technol. Built Environ."},{"issue":"17","key":"2026110710064083900_cit18","doi-asserted-by":"publisher","first-page":"10227","DOI":"10.1021\/es502674s","article-title":"Secondary Organic\nAerosol Formation from Acyclic, Monocyclic, and Polycyclic Alkanes","volume":"48","author":"Hunter","year":"2014","journal-title":"Environ. Sci. Technol."},{"issue":"3","key":"2026110710064083900_cit19","doi-asserted-by":"publisher","first-page":"683","DOI":"10.5194\/amt-3-683-2010","article-title":"Development\nand Validation of a Portable\nGas Phase Standard Generation and Calibration System for Volatile\nOrganic Compounds","volume":"3","author":"Veres","year":"2010","journal-title":"Atmospheric Meas. Technol."},{"issue":"20","key":"2026110710064083900_cit20","doi-asserted-by":"publisher","first-page":"12011","DOI":"10.1021\/acs.analchem.8b02641","article-title":"Evaluation of a New Reagent-Ion Source and Focusing\nIon\u2013Molecule Reactor for Use in Proton-Transfer-Reaction Mass\nSpectrometry","volume":"90","author":"Krechmer","year":"2018","journal-title":"Anal. Chem."},{"issue":"3","key":"2026110710064083900_cit21","doi-asserted-by":"publisher","first-page":"1861","DOI":"10.5194\/amt-12-1861-2019","article-title":"Using Collision-Induced Dissociation\nto Constrain Sensitivity of Ammonia Chemical Ionization Mass Spectrometry\n(NH4+ CIMS) to Oxygenated Volatile Organic Compounds","volume":"12","author":"Zaytsev","year":"2019","journal-title":"Atmospheric Meas. Technol."},{"issue":"4","key":"2026110710064083900_cit22","doi-asserted-by":"publisher","first-page":"2283","DOI":"10.1021\/es203985t","article-title":"On Quantitative\nDetermination of\nVolatile Organic Compound Concentrations Using Proton Transfer Reaction\nTime-of-Flight Mass Spectrometry","volume":"46","author":"Cappellin","year":"2012","journal-title":"Environ. Sci.\nTechnol."},{"issue":"9","key":"2026110710064083900_cit23","doi-asserted-by":"publisher","first-page":"3903","DOI":"10.5194\/amt-8-3903-2015","article-title":"PTRwid: A\nNew Widget Tool for Processing PTR-TOF-MS Data","volume":"8","author":"Holzinger","year":"2015","journal-title":"Atmospheric Meas. Technol."},{"issue":"6","key":"2026110710064083900_cit24","doi-asserted-by":"publisher","first-page":"3322","DOI":"10.1021\/acs.est.5b00557","article-title":"Ethylene Glycol Emissions from On-Road\nVehicles","volume":"49","author":"Wood","year":"2015","journal-title":"Environ. Sci. Technol."},{"issue":"1","key":"2026110710064083900_cit25","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1016\/S1387-3806(02)00896-5","article-title":"Analysis of Volatile Flavour Compounds\nby Proton Transfer Reaction-Mass Spectrometry: Fragmentation Patterns\nand Discrimination between Isobaric and Isomeric Compounds","volume":"221","author":"Buhr","year":"2002","journal-title":"Int. J. Mass Spectrom."},{"issue":"3","key":"2026110710064083900_cit26","doi-asserted-by":"publisher","first-page":"191","DOI":"10.1016\/S0168-1176(97)00281-4","article-title":"On-Line Monitoring\nof Volatile Organic\nCompounds at Pptv Levels by Means of Proton-Transfer-Reaction Mass\nSpectrometry (PTR-MS) Medical Applications, Food Control and Environmental\nResearch","volume":"173","author":"Lindinger","year":"1998","journal-title":"Int. J. Mass Spectrom. Ion Process."},{"issue":"2","key":"2026110710064083900_cit27","doi-asserted-by":"publisher","first-page":"801","DOI":"10.5194\/amt-17-801-2024","article-title":"Identifying\nand Correcting Interferences to PTR-ToF-MS Measurements of Isoprene\nand Other Urban Volatile Organic Compounds","volume":"17","author":"Coggon","year":"2024","journal-title":"Atmospheric Meas. Technol."},{"issue":"3","key":"2026110710064083900_cit28","doi-asserted-by":"publisher","first-page":"790","DOI":"10.1021\/es801621f","article-title":"A Laser\nInduced Fluorescence-Based\nInstrument for In-Situ Measurements of Atmospheric Formaldehyde","volume":"43","author":"Hottle","year":"2009","journal-title":"Environ. Sci. Technol."},{"issue":"20","key":"2026110710064083900_cit29","doi-asserted-by":"publisher","first-page":"10565","DOI":"10.5194\/acp-11-10565-2011","article-title":"First Direct\nMeasurements of Formaldehyde\nFlux via Eddy Covariance: Implications for Missing in-Canopy Formaldehyde\nSources","volume":"11","author":"DiGangi","year":"2011","journal-title":"Atmospheric Chem. Phys."},{"issue":"11","key":"2026110710064083900_cit30","doi-asserted-by":"publisher","first-page":"6079","DOI":"10.5194\/amt-12-6079-2019","article-title":"A New Laser-Based\nand Ultra-Portable Gas Sensor for Indoor and Outdoor Formaldehyde\n(HCHO) Monitoring","volume":"12","author":"Shutter","year":"2019","journal-title":"Atmospheric Meas. Technol."},{"issue":"24","key":"2026110710064083900_cit31","doi-asserted-by":"publisher","first-page":"8281","DOI":"10.1021\/ac061249n","article-title":"Field-Deployable,\nHigh-Resolution, Time-of-Flight Aerosol Mass Spectrometer","volume":"78","author":"DeCarlo","year":"2006","journal-title":"Anal. Chem."},{"issue":"3","key":"2026110710064083900_cit32","doi-asserted-by":"publisher","first-page":"179","DOI":"10.1111\/j.1600-0668.2005.00414.x","article-title":"Cleaning Products\nand Air Fresheners: Emissions and Resulting Concentrations of Glycol\nEthers and Terpenoids","volume":"16","author":"Singer","year":"2006","journal-title":"Indoor Air"},{"key":"2026110710064083900_cit33","doi-asserted-by":"crossref","unstructured":"Pino-Delgado, A.; Vado, D.; McLeese, D.; Hsieh, S.\n          Volatile Organic Compounds\nEmitted from Air Fresheners: Plug-Ins at Home and Little Trees in\nCars\n          J. Stud. Res.\n          2021; Vol. 10(2), 10.47611\/jsr.v10i2.1236.","DOI":"10.47611\/jsr.v10i2.1236"},{"issue":"5","key":"2026110710064083900_cit34","doi-asserted-by":"publisher","first-page":"535","DOI":"10.2131\/jts.40.535","article-title":"Characterization\nof Air Freshener Emission: The Potential Health Effects","volume":"40","author":"Kim","year":"2015","journal-title":"J. Toxicol. Sci."},{"key":"2026110710064083900_cit35","doi-asserted-by":"publisher","first-page":"279","DOI":"10.1016\/j.buildenv.2016.11.009","article-title":"Ten Questions\nConcerning Air Fresheners and Indoor Built Environments","volume":"111","author":"Steinemann","year":"2017","journal-title":"Build. Environ."},{"issue":"24","key":"2026110710064083900_cit36","doi-asserted-by":"publisher","first-page":"7353","DOI":"10.5194\/amt-15-7353-2022","article-title":"Chemical Ionization\nMass Spectrometry Utilizing Ammonium\nIons (NH 4+ CIMS) for Measurements of Organic\nCompounds in the Atmosphere","volume":"15","author":"Xu","year":"2022","journal-title":"Atmospheric Meas.\nTechnol."},{"issue":"2","key":"2026110710064083900_cit37","doi-asserted-by":"publisher","first-page":"133","DOI":"10.1038\/nchem.948","article-title":"Carbon Oxidation State as a Metric\nfor Describing the Chemistry of Atmospheric Organic Aerosol","volume":"3","author":"Kroll","year":"2011","journal-title":"Nat. Chem."},{"key":"2026110710064083900_cit38","doi-asserted-by":"publisher","DOI":"10.1016\/j.buildenv.2023.110541","article-title":"Removal of Volatile\nOrganic Compounds by Mobile Air Cleaners: Dynamics, Limitations, and\nPossible Side Effects","volume":"242","author":"S\u00f8rensen","year":"2023","journal-title":"Build. Environ."},{"key":"2026110710064083900_cit39","doi-asserted-by":"publisher","first-page":"212","DOI":"10.1016\/j.apcatb.2012.12.001","article-title":"Effect of\nWater Vapor on the By-Products\nand Decomposition Rate of ppb-Level Toluene by Photocatalytic Oxidation","volume":"132\u2013133","author":"Mo","year":"2013","journal-title":"Appl. Catal., B"},{"issue":"3\u20134","key":"2026110710064083900_cit40","doi-asserted-by":"publisher","first-page":"570","DOI":"10.1016\/j.apcatb.2009.01.015","article-title":"Determination and Risk Assessment of By-Products Resulting from Photocatalytic\nOxidation of Toluene","volume":"89","author":"Mo","year":"2009","journal-title":"Appl. Catal., B"},{"issue":"4","key":"2026110710064083900_cit41","doi-asserted-by":"publisher","DOI":"10.1016\/j.indenv.2024.100049","article-title":"Methanol and Ethanol in Indoor Environments","volume":"1","author":"Nazaroff","year":"2024","journal-title":"Indoor Environ."},{"key":"2026110710064083900_cit42","doi-asserted-by":"publisher","first-page":"344","DOI":"10.1016\/j.buildenv.2018.02.035","article-title":"Indoor Volatile\nOrganic Compounds at an Australian\nUniversity","volume":"135","author":"Goodman","year":"2018","journal-title":"Build. Environ."},{"issue":"2","key":"2026110710064083900_cit43","doi-asserted-by":"publisher","first-page":"123","DOI":"10.1111\/j.1600-0668.1994.t01-2-00007.x","article-title":"Concentrations of\nVolatile Organic Compounds in Indoor Air - A Review","volume":"4","author":"Brown","year":"1994","journal-title":"Indoor Air"},{"key":"2026110710064083900_cit44","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhazmat.2021.126766","article-title":"Ultraviolet Photocatalytic\nOxidation Technology for Indoor Volatile Organic Compound Removal:\nA Critical Review with Particular Focus on Byproduct Formation and\nModeling","volume":"421","author":"Wu","year":"2022","journal-title":"J. Hazard. Mater."},{"key":"2026110710064083900_cit45","doi-asserted-by":"publisher","first-page":"427","DOI":"10.1016\/j.buildenv.2018.08.048","article-title":"Modeling of\nBy-Products from Photocatalytic Oxidation\n(PCO) Indoor Air Purifiers: A Case Study of Ethanol","volume":"144","author":"Zhong","year":"2018","journal-title":"Build. Environ."}],"container-title":["ACS ES&amp;T Air"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.acs.org\/doi\/pdf\/10.1021\/acsestair.5c00294","content-type":"application\/pdf","content-version":"vor","intended-application":"unspecified"},{"URL":"https:\/\/pubs.acs.org\/aeacd5\/article-pdf\/2\/12\/2991\/69113813\/acsestair.5c00294.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.acs.org\/aeacd5\/article-pdf\/2\/12\/2991\/69113813\/acsestair.5c00294.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,11,7]],"date-time":"2026-11-07T15:23:08Z","timestamp":1794064988000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.acs.org\/aeacd5\/article\/2\/12\/2991\/3694029\/Changes-in-Volatile-Organic-Compound-Composition"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,11,7]]},"references-count":45,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2025,11,7]]},"published-print":{"date-parts":[[2025,12,12]]}},"URL":"https:\/\/doi.org\/10.1021\/acsestair.5c00294","relation":{},"ISSN":["2837-1402"],"issn-type":[{"value":"2837-1402","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,11,7]]}}}