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Atmospheric particulate mercury in the megacity Beijing: Spatio-temporal variations and source apportionment

dc.rights.licenseopenen_US
dc.contributor.authorSCHLEICHER, N. J.
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSCHAFER, Jorg
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBLANC, Gerard
dc.contributor.authorCHEN, Y.
dc.contributor.authorCHAI, F.
dc.contributor.authorCEN, K.
dc.contributor.authorNORRA, S.
dc.date.accessioned2024-06-07T12:14:43Z
dc.date.available2024-06-07T12:14:43Z
dc.date.issued2015-05-01
dc.identifier.issn1352-2310en_US
dc.identifier.urioai:crossref.org:10.1016/j.atmosenv.2015.03.018
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/200338
dc.description.abstractEnParticulate mercury (HgP) concentrations in weekly aerosol samples (PM2.5 and TSP) from Beijing, China, were measured for a complete year. In addition, spatial differences were measured for a shorter time period at four different sites and potential source materials were analyzed. Average HgP concentrations in PM2.5 samples were 0.26 ng/m3 for day-time PM2.5, 0.28 ng/m3 for night-time PM2.5, and 0.57 ng/m3 for TSP samples, respectively. Coal combustion was identified as the major source of HgP in Beijing. Other sources included industrial activities as well as red color on historical buildings as a minor contribution. Spatial differences were pronounced with highest concentrations in the inner city (inside the 3rd ring road). The results further showed a strong seasonality with highest concentrations in winter and lowest in summer due to local meteorological conditions (precipitation in summer and stagnant conditions and low mixing layer height in winter) as well as seasonal sources, such as coal combustion for heating purposes. Day–night differences also showed a seasonal pattern with higher night-time concentrations during summer and higher day-time concentrations during winter. Compared to other cities worldwide, the HgP concentrations in Beijing were alarmingly high, suggesting that airborne particulate Hg should be the focus of future monitoring activities and mitigation measures.
dc.language.isoENen_US
dc.sourcecrossref
dc.title.enAtmospheric particulate mercury in the megacity Beijing: Spatio-temporal variations and source apportionment
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.atmosenv.2015.03.018en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalAtmospheric Environmenten_US
bordeaux.page251-261en_US
bordeaux.volume109en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamTGMen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-04604843
hal.version1
hal.date.transferred2024-06-07T12:14:45Z
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exporttrue
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
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