Multielemental analysis and characterization of fine aerosols at several key ACE‐Asia sites

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dc.contributor.authorCohen, DDen_AU
dc.contributor.authorGarton, DBen_AU
dc.contributor.authorStelcer, Een_AU
dc.contributor.authorHawas, Oen_AU
dc.contributor.authorWang, Ten_AU
dc.contributor.authorPoon, Sen_AU
dc.contributor.authorKim, JYen_AU
dc.contributor.authorChoi, BCen_AU
dc.contributor.authorOh, SNen_AU
dc.contributor.authorShin, HJen_AU
dc.contributor.authorKo, MYen_AU
dc.contributor.authorUematsu, Men_AU
dc.date.accessioned2025-11-13T04:34:14Zen_AU
dc.date.available2025-11-13T04:34:14Zen_AU
dc.date.issued2004-08-05en_AU
dc.date.statistics2025-05-07en_AU
dc.description.abstractPM2.5 and PM10 particle size fractions were measured every Wednesday and Sunday for an 18‐month period from 1 January 2001 at three key ACE‐Asia sites: Hong Kong, Cheju Island in southern Korea, and Sado Island in Japan. Median 24 hour PM2.5 mass loadings of 29, 16, and 9.1 μg/m3 and coarse mass loadings of 33, 14, and 11 μg/m3 were measured at Hong Kong, Cheju, and Sado Island sites, respectively, during the study period. The corresponding maximum PM2.5 and coarse mass values for the three sites were 109, 81, and 78 μg/m3 and 101, 162, and 253 μg/m3, respectively. Accelerator‐based ion beam analysis (IBA) techniques were used to quantify major components as well as significant trace elements. These included total hydrogen, black carbon, F, Na, Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Br, and Pb, with detection limits close to or below 1 ng/m3. The average PM2.5 percentage composition by weight across the three sites was estimated to be around (8.4 ± 4)% black carbon, (7.7 ± 7)% soil, (43 ± 14)% ammonium sulfate, (11 ± 16)% organic matter, (10 ± 12)% salinity, and (0.6 ± 0.3)% trace elements. Soil fingerprints for the east Asian region were generated using oxides of measured Al, Si, K, Ca, Ti, Mn, and Fe concentrations. The coarse fraction was dominated by wind blown soil (23%) and sea salts (48%). [PM10/PM2.5] mass ratios were typically (2.1 ± 0.4) averaged across all sites for the whole year. [PM10/PM2.5] mass ratios for the 21 IBA elements analyzed were also provided. This quantitative data providing both masses and dates over an 18‐month period provide useful input for aerosol transport modeling for the east Asia region. © 2025 American Geophysical Union.en_AU
dc.description.sponsorshipWe would like to acknowledge the help of local staff at each of the sampling site locations for regular filter changes throughout this 18-month study. We are also indebted to all the 3 MV Van de Graaff accelerator staff at ANSTO for assistance with all the IBA measurements. This research was supported by the ANSTO, Hong Kong Polytechnic University, the Research Grants Council of the Hong Kong Special Administrative Region (project 5063/01E) and the NRL project of Korea Ministry of Science and Technology (project M1-0001-00-0018).en_AU
dc.identifier.articlenumberD19S12en_AU
dc.identifier.citationCohen, D. D., Garton, D., Stelcer, E., Hawas, O., Wang, T., Poon, S., Kim, J., Choi, B. C., Oh, S. N., Shin, H.-J., Ko, M. Y., & Uematsu, M. (2004). Multielemental analysis and characterization of fine aerosols at several key ACE-Asia sites. Journal of Geophysical Research: Atmospheres, 109(D19). doi:10.1029/2003JD003569en_AU
dc.identifier.issn0148-0227en_AU
dc.identifier.issueD19en_AU
dc.identifier.journaltitleJournal of Geophysical Researchen_AU
dc.identifier.urihttps://doi.org/10.1029/2003jd003569en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16687en_AU
dc.identifier.volume109en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherAmerican Geophysical Unionen_AU
dc.subjectAsiaen_AU
dc.subjectAerosolsen_AU
dc.subjectHong Kongen_AU
dc.subjectJapanen_AU
dc.subjectRepublic of Koreaen_AU
dc.subjectPotassiumen_AU
dc.subjectSodiumen_AU
dc.subjectCobalten_AU
dc.subjectNickelen_AU
dc.subjectOrganic matteren_AU
dc.subjectSalinityen_AU
dc.subjectHydrogenen_AU
dc.subjectFluorineen_AU
dc.subjectSoilsen_AU
dc.subjectOxidesen_AU
dc.subjectScatteringen_AU
dc.subjectParticlesen_AU
dc.titleMultielemental analysis and characterization of fine aerosols at several key ACE‐Asia sitesen_AU
dc.typeJournal Articleen_AU
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