Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 안강호 | - |
dc.date.accessioned | 2019-05-03T05:51:48Z | - |
dc.date.available | 2019-05-03T05:51:48Z | - |
dc.date.issued | 2017-06 | - |
dc.identifier.citation | ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS, v. 19, No. 1, Page. 59-64 | en_US |
dc.identifier.issn | 2050-7887 | - |
dc.identifier.issn | 2050-7895 | - |
dc.identifier.uri | http://pubs.rsc.org/-/content/articlehtml/2017/em/c6em00576d | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/103377 | - |
dc.description.abstract | Most particles in the rail subway environment are sub-micron sized ferruginous flakes and splinters generated mechanically by frictional wear of brake pads, wheels and rails. To better understand the mechanisms of formation and the alteration processes affecting inhalable particles in subways, PM samples (1-2.5 mu m and 2.5-10 mu m) were collected in the Barcelona Metro and then studied under a scanning electron microscope. Most particles in these samples are hematitic (up to 88%), with relatively minor amounts of mineral matter (up to 9%) and sulphates (up to 5%). Detailed microscopy (using back scattered and TEM-DRX imaging) reveals how many of the metallic particles comprise the metallic Fe nucleus surrounded by hematite (Fe2O3) and a coating of sulphate and chloride salts mixed with mineral matter (including Ca-carbonates, clay minerals and quartz). These observations record the emission of fine to ultrafine FePM by frictional wear at elevated temperatures that promote rapid partial (or complete) oxidation of the native metal. Water condensing on the PM surface during cooling leads to the adsorption of inorganic mineral particles that coat the iron oxide. The distinctively layered polymineralic structure that results from these processes is peculiar to particles generated in the subway environment and very different from PM typically inhaled outdoors. | en_US |
dc.description.sponsorship | This study was supported by the Spanish Ministry of Economy and Competitiveness and FEDER funds (METRO CGL2012-33066), the IMPROVE LIFE Project (LIFE13 ENV/ES/000263), the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 315760 HEXACOMM and the Korean Ministry of Environment through "The Eco-Innovation project". Support from Generalitat de Catalunya 2014 SGR33 is also acknowledged. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | ROYAL SOC CHEMISTRY | en_US |
dc.subject | PARTICULATE MATTER | en_US |
dc.subject | SYSTEM | en_US |
dc.subject | PM2.5 | en_US |
dc.subject | PM10 | en_US |
dc.subject | BARCELONA | en_US |
dc.subject | STATION | en_US |
dc.subject | TUNNEL | en_US |
dc.subject | KOREA | en_US |
dc.subject | SEOUL | en_US |
dc.title | Formation and alteration of airborne particles in the subway environment | en_US |
dc.type | Article | en_US |
dc.relation.no | 1 | - |
dc.relation.volume | 19 | - |
dc.identifier.doi | 10.1039/c6em00576d | - |
dc.relation.page | 59-64 | - |
dc.relation.journal | ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS | - |
dc.contributor.googleauthor | Moreno, T. | - |
dc.contributor.googleauthor | Querol, X. | - |
dc.contributor.googleauthor | Martins, V | - |
dc.contributor.googleauthor | Minguillon, M. C. | - |
dc.contributor.googleauthor | Reche, C. | - |
dc.contributor.googleauthor | Ku, L. H | - |
dc.contributor.googleauthor | Eun, H. R | - |
dc.contributor.googleauthor | Ahn, K. H | - |
dc.contributor.googleauthor | Capdevila, M. | - |
dc.contributor.googleauthor | de Miguel, E. | - |
dc.relation.code | 2017002549 | - |
dc.sector.campus | E | - |
dc.sector.daehak | COLLEGE OF ENGINEERING SCIENCES[E] | - |
dc.sector.department | DEPARTMENT OF MECHANICAL ENGINEERING | - |
dc.identifier.pid | khahn | - |
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