Number Size Distribution of Fine and Ultrafine Fume Particles From Various Welding Processes.
Studies in the field of environmental epidemiology indicate that for the adverse effect of inhaled particles not only particle mass is crucial but also particle size is. Ultrafine particles with diameters below 100nm are of special interest since these particles have high surface area to mass ratio...
| Publicado en: | Annals of Occupational Hygiene Vol. 57; no. 3; pp. 305 - 314 |
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| Autores principales: | , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Oxford University Press / USA
Apr2013
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=86226315&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 86226315 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00034878 JQ4 jtl: Annals of Occupational Hygiene issn: 00034878 maglogo: N pubinfo: dt: Apr2013 vid: 57 iid: 3 pid: 622 pub: Oxford University Press / USA artinfo: ui: 86226315 104254849 104254849 10.1093/annhyg/mes070 86226315 ppf: 305 ppct: 9 formats: fmt: @attributes: type: P tig: atl: Number Size Distribution of Fine and Ultrafine Fume Particles From Various Welding Processes. aug: au: Brand, Peter Lenz, Klaus Reisgen, Uwe Kraus, Thomas affil: Institute for Occupational and Social Medicine, RWTH Aachen University, Pauwelsstr. 30, D-52074 Aachen/Germany sug: subj: Industry Particle Size Nanoparticles Adverse Effects Occupational Exposure Descriptive Statistics Measurement Issues and Assessments ab: Studies in the field of environmental epidemiology indicate that for the adverse effect of inhaled particles not only particle mass is crucial but also particle size is. Ultrafine particles with diameters below 100nm are of special interest since these particles have high surface area to mass ratio and have properties which differ from those of larger particles. In this paper, particle size distributions of various welding and joining techniques were measured close to the welding process using a fast mobility particle sizer (FMPS). It turned out that welding processes with high mass emission rates (manual metal arc welding, metal active gas welding, metal inert gas welding, metal inert gas soldering, and laser welding) show mainly agglomerated particles with diameters above 100nm and only few particles in the size range below 50nm (10 to 15%). Welding processes with low mass emission rates (tungsten inert gas welding and resistance spot welding) emit predominantly ultrafine particles with diameters well below 100nm. This finding can be explained by considerably faster agglomeration processes in welding processes with high mass emission rates. Although mass emission is low for tungsten inert gas welding and resistance spot welding, due to the low particle size of the fume, these processes cannot be labeled as toxicologically irrelevant and should be further investigated. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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