{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,31]],"date-time":"2026-08-31T01:30:56Z","timestamp":1788139856864,"version":"build-2803163510"},"reference-count":61,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2021,3,1]],"date-time":"2021-03-01T00:00:00Z","timestamp":1614556800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2021,3,1]],"date-time":"2021-03-01T00:00:00Z","timestamp":1614556800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program","doi-asserted-by":"publisher","award":["2016YFC0207505"],"award-info":[{"award-number":["2016YFC0207505"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Science Foundation of China","doi-asserted-by":"publisher","award":["41505112"],"award-info":[{"award-number":["41505112"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Science Foundation of China","doi-asserted-by":"publisher","award":["41702373"],"award-info":[{"award-number":["41702373"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100007129","name":"Natural Science Foundation of Shandong Province","doi-asserted-by":"publisher","award":["BS2015HZ002"],"award-info":[{"award-number":["BS2015HZ002"]}],"id":[{"id":"10.13039\/501100007129","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Science of The Total Environment"],"published-print":{"date-parts":[[2021,3]]},"DOI":"10.1016\/j.scitotenv.2020.143709","type":"journal-article","created":{"date-parts":[[2020,11,14]],"date-time":"2020-11-14T07:36:18Z","timestamp":1605339378000},"page":"143709","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":37,"special_numbering":"C","title":["Enhanced photochemical formation of secondary organic aerosols during the COVID-19 lockdown in Northern China"],"prefix":"10.1016","volume":"758","author":[{"given":"Jingjing","family":"Meng","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zheng","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ruiwen","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Min","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuanyuan","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanan","family":"Yi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhijian","family":"Ding","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hongji","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Li","family":"Yan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhanfang","family":"Hou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gehui","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.scitotenv.2020.143709_bb0005","doi-asserted-by":"crossref","DOI":"10.1016\/j.scitotenv.2020.139052","article-title":"Does lockdown reduce air pollution? Evidence from 44 cities in northern China","volume":"731","author":"Bao","year":"2020","journal-title":"Sci. Total Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0010","doi-asserted-by":"crossref","first-page":"3447","DOI":"10.1016\/j.atmosenv.2011.03.034","article-title":"Mixing state of biomass burning particles by single particle aerosol mass spectrometer in the urban area of PRD, China","volume":"45","author":"Bi","year":"2011","journal-title":"Atmos. Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0015","doi-asserted-by":"crossref","first-page":"4115","DOI":"10.1021\/cr5005502","article-title":"Saturation vapor pressures and transition enthalpies of low-volatility organic molecules of atmospheric relevance: from dicarboxylic acids to complex mixtures","volume":"115","author":"Bilde","year":"2015","journal-title":"Chem. Rev."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0020","doi-asserted-by":"crossref","DOI":"10.1029\/2005GL025374","article-title":"Link between isoprene and secondary organic aerosol (SOA): pyruvic acid oxidation yields low volatility organic acids in clouds","volume":"33","author":"Carlton","year":"2006","journal-title":"Geophys. Res. Lett."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0025","doi-asserted-by":"crossref","first-page":"7588","DOI":"10.1016\/j.atmosenv.2007.05.035","article-title":"Atmospheric oxalic acid and SOA production from glyoxal: results of aqueous photooxidation experiments","volume":"41","author":"Carlton","year":"2007","journal-title":"Atmos. Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0030","doi-asserted-by":"crossref","first-page":"1541","DOI":"10.4209\/aaqr.2020.05.0224","article-title":"Influence of COVID-19 event on air quality and their association in Mainland China","volume":"20","author":"Chen","year":"2020","journal-title":"Aerosol Air Qual. Res."},{"issue":"161\u2013162","key":"10.1016\/j.scitotenv.2020.143709_bb0035","doi-asserted-by":"crossref","first-page":"134","DOI":"10.1016\/j.atmosres.2015.04.010","article-title":"Size-resolved airborne particulate oxalic and related secondary organic aerosol species in the urban atmosphere of Chengdu, China","author":"Cheng","year":"2015","journal-title":"Atmos. Res."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0040","doi-asserted-by":"crossref","first-page":"9519","DOI":"10.5194\/acp-17-9519-2017","article-title":"Mixing state of oxalic acid containing particles in the rural area of Pearl River Delta, China: implications for the formation mechanism of oxalic acid","volume":"17","author":"Cheng","year":"2017","journal-title":"Atmos. Chem. Phys."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0045","doi-asserted-by":"crossref","first-page":"2137","DOI":"10.1021\/jp973042r","article-title":"Thermodynamic model of the system H+\u2212NH4+\u2212SO42-\u2212NO3-\u2212H2O at tropospheric temperatures","volume":"102","author":"Clegg","year":"1998","journal-title":"J. Phys. Chem. A"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0050","doi-asserted-by":"crossref","first-page":"5439","DOI":"10.1021\/es070329l","article-title":"Real-time, single-particle measurements of oligomers in aged ambient aerosol particles","volume":"41","author":"Denkenberger","year":"2007","journal-title":"Environmental Science & Technology"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0055","doi-asserted-by":"crossref","first-page":"128","DOI":"10.1016\/j.atmosres.2017.11.003","article-title":"Dicarboxylic acids, oxocarboxylic acids and \u03b1-dicarbonyls in fine aerosols over central Alaska: implications for sources and atmospheric processes","volume":"202","author":"Deshmukh","year":"2018","journal-title":"Atmos. Res."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0060","article-title":"A modeling study of aqueous production of dicarboxylic acids: 1. Chemical pathways and speciated organic mass production","volume":"109","author":"Ervens","year":"2004","journal-title":"Journal of Geophysical Research: Atmospheres"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0065","first-page":"D15205","article-title":"A modeling study of aqueous production of dicarboxylic acids: 1. Chemical pathways and speciated organic mass production","volume":"109","author":"Ervens","year":"2004","journal-title":"J. Geophys. Res."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0070","doi-asserted-by":"crossref","first-page":"1405","DOI":"10.1021\/acs.est.6b04700","article-title":"Role of aerosol liquid water in secondary organic aerosol formation from volatile organic compounds","volume":"51","author":"Faust","year":"2017","journal-title":"Environmental Science & Technology"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0075","doi-asserted-by":"crossref","first-page":"D15303","DOI":"10.1029\/2007JD009505","article-title":"Global budgets of atmospheric glyoxal and methylglyoxal, and implications for formation of secondary organic aerosols","volume":"113","author":"Fu","year":"2008","journal-title":"J. Geophys. Res."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0080","doi-asserted-by":"crossref","first-page":"3881","DOI":"10.1021\/acs.est.9b07248","article-title":"Persistent heavy winter nitrate pollution driven by increased photochemical oxidants in Northern China","volume":"54","author":"Fu","year":"2020","journal-title":"Environmental Science & Technology"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0085","doi-asserted-by":"crossref","first-page":"133","DOI":"10.1016\/j.atmosenv.2018.10.050","article-title":"Characterization of oxalic acid-containing particles in summer and winter seasons in Chengdu, China","volume":"198","author":"Huang","year":"2019","journal-title":"Atmos. Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0090","series-title":"Enhanced Secondary Pollution Offset Reduction of Primary Emissions During COVID-19 Lockdown in China","author":"Huang","year":"2020"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0095","doi-asserted-by":"crossref","first-page":"814","DOI":"10.1126\/science.1075798","article-title":"Heterogeneous atmospheric aerosol production by acid-catalyzed particle-phase reactions","volume":"298","author":"Jang","year":"2002","journal-title":"Science"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0100","doi-asserted-by":"crossref","DOI":"10.1021\/es00047a033","article-title":"Seasonal changes in the distribution of dicarboxylic acids in the urban atmosphere","volume":"27","author":"Kawamura","year":"1993","journal-title":"Environ Sci Technol"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0105","doi-asserted-by":"crossref","first-page":"1945","DOI":"10.1016\/j.atmosenv.2004.12.014","article-title":"Diurnal changes in the distribution of dicarboxylic acids, ketocarboxylic acids and dicarbonyls in the urban Tokyo atmosphere","volume":"39","author":"Kawamura","year":"2005","journal-title":"Atmos. Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0110","doi-asserted-by":"crossref","first-page":"3695","DOI":"10.5194\/acp-13-8285-2013","article-title":"High abundances of water-soluble dicarboxylic acids, ketocarboxylic acids and \u03b1-dicarbonyls in the mountain aerosols over the North China Plain during wheat burning season","volume":"13","author":"Kawamura","year":"2013","journal-title":"Atmos. Chem. Phys."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0115","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1016\/j.atmosres.2019.01.021","article-title":"Dicarboxylic acids, oxocarboxylic acids and \u03b1-dicarbonyls in atmospheric aerosols from Mt. Fuji, Japan: implication for primary emission versus secondary formation","volume":"221","author":"Kunwar","year":"2019","journal-title":"Atmos. Res."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0120","first-page":"eabb7431","article-title":"Unexpected air pollution with marked emission reductions during the COVID-19 outbreak in China","author":"Le","year":"2020","journal-title":"Science"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0125","doi-asserted-by":"crossref","first-page":"422","DOI":"10.1073\/pnas.1812168116","article-title":"Anthropogenic drivers of 2013\u20132017 trends in summer surface ozone in China","volume":"116","author":"Li","year":"2019","journal-title":"Proc. Natl. Acad. Sci."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0130","doi-asserted-by":"crossref","DOI":"10.1016\/j.scitotenv.2020.139282","article-title":"Air quality changes during the COVID-19 lockdown over the Yangtze River Delta Region: an insight into the impact of human activity pattern changes on air pollution variation","volume":"732","author":"Li","year":"2020","journal-title":"Sci. Total Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0135","doi-asserted-by":"crossref","first-page":"1716","DOI":"10.4209\/aaqr.2020.06.0321","article-title":"Impact of the COVID-19 event on the characteristics of atmospheric single particle in the Northern China","volume":"20","author":"Li","year":"2020","journal-title":"Aerosol Air Qual. Res."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0140","doi-asserted-by":"crossref","first-page":"4441","DOI":"10.1021\/es048039h","article-title":"Isoprene forms secondary organic aerosol through cloud processing:model simulations","volume":"39","author":"Lim","year":"2005","journal-title":"Environmental Science & Technology"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0145","doi-asserted-by":"crossref","first-page":"10521","DOI":"10.5194\/acp-10-10521-2010","article-title":"Aqueous chemistry and its role in secondary organic aerosol (SOA) formation","volume":"10","author":"Lim","year":"2010","journal-title":"Atmos. Chem. Phys."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0150","first-page":"1","article-title":"In-cloud formation of secondary species in iron-containing particles","author":"Lin","year":"2018","journal-title":"Atmospheric Chemistry and Physics Discussions"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0155","doi-asserted-by":"crossref","DOI":"10.1016\/j.atmosenv.2020.117632","article-title":"The reductions of oxalate and its precursors in cloud droplets relative to wet particles","volume":"235","author":"Lin","year":"2020","journal-title":"Atmos. Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0160","doi-asserted-by":"crossref","first-page":"582","DOI":"10.1016\/j.atmosenv.2013.07.024","article-title":"Atmospheric oxalic acid and related secondary organic aerosols in Qinghai Lake, a continental background site in Tibet Plateau","volume":"79","author":"Meng","year":"2013","journal-title":"Atmos. Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0165","doi-asserted-by":"crossref","first-page":"15069","DOI":"10.5194\/acp-18-15069-2018","article-title":"Molecular distribution and stable carbon isotopic compositions of dicarboxylic acids and related SOA from biogenic sources in the summertime atmosphere of Mt. Tai in the North China Plain","volume":"18","author":"Meng","year":"2018","journal-title":"Atmos. Chem. Phys."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0170","doi-asserted-by":"crossref","DOI":"10.1016\/j.scitotenv.2019.135256","article-title":"Molecular characteristics and stable carbon isotope compositions of dicarboxylic acids and related compounds in the urban atmosphere of the North China Plain: implications for aqueous phase formation of SOA during the haze periods","volume":"705","author":"Meng","year":"2020","journal-title":"Sci. Total Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0175","doi-asserted-by":"crossref","first-page":"D19206","DOI":"10.1029\/2009JD011790","article-title":"Dicarboxylic acids and water-soluble organic carbon in aerosols in New Delhi, India, in winter: characteristics and formation processes","volume":"114","author":"Miyazaki","year":"2009","journal-title":"Journal of Geophysical Research: Atmospheres"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0180","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1016\/j.atmosenv.2017.07.028","article-title":"Secondary formation of oxalic acid and related organic species from biogenic sources in a larch forest at the northern slope of Mt. Fuji","volume":"166","author":"Mochizuki","year":"2017","journal-title":"Atmos. Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0185","doi-asserted-by":"crossref","first-page":"4499","DOI":"10.5194\/acp-8-4499-2008","article-title":"Measurement of ambient aerosols in northern Mexico City by single particle mass spectrometry","volume":"8","author":"Moffet","year":"2008","journal-title":"Atmos. Chem. Phys."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0190","doi-asserted-by":"crossref","first-page":"5761","DOI":"10.5194\/acp-11-5761-2011","article-title":"In-cloud oxalate formation in the global troposphere: a 3-D modeling study","volume":"11","author":"Myriokefalitakis","year":"2011","journal-title":"Atmos. Chem. Phys."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0195","doi-asserted-by":"crossref","DOI":"10.1021\/acs.est.6b02338","article-title":"Siderophores in cloud waters and potential impact on atmospheric chemistry: photoreactivity of iron complexes under sun-simulated conditions","volume":"50","author":"Passananti","year":"2016","journal-title":"Environmental science & technology"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0200","series-title":"Atmospheric Chemistry and Physics: From Air Pollution to Climate Change","volume":"vol. 51","author":"Seinfeld","year":"1998"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0205","doi-asserted-by":"crossref","DOI":"10.1016\/j.scitotenv.2020.139115","article-title":"Asymmetric nexus between temperature and COVID-19 in the top ten affected provinces of China: a current application of quantile-on-quantile approach","volume":"736","author":"Shahzad","year":"2020","journal-title":"Sci. Total Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0210","doi-asserted-by":"crossref","first-page":"4647","DOI":"10.1021\/es0630442","article-title":"On the source of organic acid aerosol layers above clouds","volume":"41","author":"Sorooshian","year":"2007","journal-title":"Environmental Science & Technology"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0215","doi-asserted-by":"crossref","first-page":"D13201","DOI":"10.1029\/2007JD008537","article-title":"Particulate organic acids and overall water-soluble aerosol composition measurements from the 2006 Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS)","volume":"112","author":"Sorooshian","year":"2007","journal-title":"J. Geophys. Res."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0220","doi-asserted-by":"crossref","first-page":"4783","DOI":"10.1021\/es204322c","article-title":"Molecular distribution and stable carbon isotopic composition of dicarboxylic acids, ketocarboxylic acids, and \u03b1-dicarbonyls in size-resolved atmospheric particles from Xi\u2019an City, China","volume":"46","author":"Wang","year":"2012","journal-title":"Environmental Science & Technology"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0225","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1016\/j.atmosenv.2015.05.013","article-title":"Field observation on secondary organic aerosols during Asian dust storm periods: formation mechanism of oxalic acid and related compounds on dust surface","volume":"113","author":"Wang","year":"2015","journal-title":"Atmos. Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0230","doi-asserted-by":"crossref","first-page":"470","DOI":"10.1016\/S0140-6736(20)30185-9","article-title":"A novel coronavirus outbreak of global health concern","volume":"395","author":"Wang","year":"2020","journal-title":"Lancet"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0235","doi-asserted-by":"crossref","DOI":"10.1016\/j.envpol.2019.113401","article-title":"Enhanced aqueous-phase formation of secondary organic aerosols due to the regional biomass burning over North China Plain","volume":"256","author":"Wang","year":"2020","journal-title":"Environ. Pollut."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0240","doi-asserted-by":"crossref","first-page":"5652","DOI":"10.1021\/es4056643","article-title":"Modeling the impact of Iron\u2013carboxylate photochemistry on radical budget and carboxylate degradation in cloud droplets and particles","volume":"48","author":"Weller","year":"2014","journal-title":"Environmental Science & Technology"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0245","doi-asserted-by":"crossref","first-page":"160","DOI":"10.1021\/acs.estlett.8b00021","article-title":"Aerosol liquid water driven by anthropogenic inorganic salts: implying its key role in haze formation over the North China plain","volume":"5","author":"Wu","year":"2018","journal-title":"Environmental Science & Technology Letters"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0250","doi-asserted-by":"crossref","first-page":"9755","DOI":"10.1073\/pnas.1916775117","article-title":"Aerosol\u2013photolysis interaction reduces particulate matter during wintertime haze events","volume":"117","author":"Wu","year":"2020","journal-title":"Proc. Natl. Acad. Sci."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0255","doi-asserted-by":"crossref","DOI":"10.1016\/j.atmosres.2020.104843","article-title":"Characteristics and source apportionment of ambient single particles in Tianjin, China: the close association between oxalic acid and biomass burning","volume":"237","author":"Xu","year":"2020","journal-title":"Atmos. Res."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0260","doi-asserted-by":"crossref","first-page":"1204","DOI":"10.4209\/aaqr.2020.04.0139","article-title":"Air quality index, indicatory air pollutants and impact of COVID-19 event on the air quality near Central China","volume":"20","author":"Xu","year":"2020","journal-title":"Aerosol Air Qual. Res."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0265","doi-asserted-by":"crossref","first-page":"3876","DOI":"10.1016\/j.atmosenv.2009.05.002","article-title":"Single particle mass spectrometry of oxalic acid in ambient aerosols in Shanghai: mixing state and formation mechanism","volume":"43","author":"Yang","year":"2009","journal-title":"Atmos. Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0270","doi-asserted-by":"crossref","first-page":"128","DOI":"10.1021\/es049559f","article-title":"When aerosol sulfate goes up, so does oxalate:implication for the formation mechanisms of oxalate","volume":"39","author":"Yu","year":"2005","journal-title":"Environmental Science & Technology"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0275","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1016\/j.scitotenv.2019.03.131","article-title":"Characteristics and secondary formation of water-soluble organic acids in PM1, PM2.5 and PM10 in Beijing during haze episodes","volume":"669","author":"Yu","year":"2019","journal-title":"Sci. Total Environ."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0280","doi-asserted-by":"crossref","first-page":"13891","DOI":"10.5194\/acp-17-13891-2017","article-title":"Insight into the in-cloud formation of oxalate based on in situ measurement by single particle mass spectrometry","volume":"17","author":"Zhang","year":"2017","journal-title":"Atmos. Chem. Phys."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0285","doi-asserted-by":"crossref","first-page":"1269","DOI":"10.1021\/acs.est.8b05280","article-title":"Oxalate formation enhanced by Fe-containing particles and environmental implications","volume":"53","author":"Zhang","year":"2019","journal-title":"Environmental Science & Technology"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0290","first-page":"10331","article-title":"Vertical distribution of particle-phase dicarboxylic acids, oxoacids and \u03b1-dicarbonyls in the urban boundary layer based on the 325 m tower in Beijing. Atmos","volume":"20","author":"Zhao","year":"2020","journal-title":"Chem. Phys."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0295","doi-asserted-by":"crossref","first-page":"9772","DOI":"10.1002\/2015JD023531","article-title":"Sources and atmospheric processes impacting oxalate at a suburban coastal site in Hong Kong: insights inferred from 1year hourly measurements","volume":"120","author":"Zhou","year":"2015","journal-title":"Journal of Geophysical Research: Atmospheres"},{"key":"10.1016\/j.scitotenv.2020.143709_bb0300","doi-asserted-by":"crossref","first-page":"10741","DOI":"10.5194\/acp-18-10741-2018","article-title":"Molecular distributions of dicarboxylic acids, oxocarboxylic acids and \u03b1-dicarbonyls in PM2.5 collected at the top of Mt. Tai, North China, during the wheat burning season of 2014","volume":"18","author":"Zhu","year":"2018","journal-title":"Atmos. Chem. Phys."},{"key":"10.1016\/j.scitotenv.2020.143709_bb0305","doi-asserted-by":"crossref","first-page":"114","DOI":"10.1016\/j.atmosenv.2018.11.019","article-title":"The weekday\/weekend ozone differences induced by the emissions change during summer and autumn in Guangzhou, China","volume":"199","author":"Zou","year":"2019","journal-title":"Atmos. Environ."}],"container-title":["Science of The Total Environment"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0048969720372405?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0048969720372405?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,24]],"date-time":"2025-09-24T11:29:27Z","timestamp":1758713367000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0048969720372405"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,3]]},"references-count":61,"alternative-id":["S0048969720372405"],"URL":"https:\/\/doi.org\/10.1016\/j.scitotenv.2020.143709","relation":{},"ISSN":["0048-9697"],"issn-type":[{"value":"0048-9697","type":"print"}],"subject":[],"published":{"date-parts":[[2021,3]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Enhanced photochemical formation of secondary organic aerosols during the COVID-19 lockdown in Northern China","name":"articletitle","label":"Article Title"},{"value":"Science of The Total Environment","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.scitotenv.2020.143709","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2020 Elsevier B.V. All rights reserved.","name":"copyright","label":"Copyright"}],"article-number":"143709"}}