Powder Intrinsic Properties as Dustiness Predictor for an Efficient Exposure Assessment?
Dustiness is not an intrinsic physically defined property of a powder, but the tendency of particles to become airborne in response to mechanical and/or aerodynamic stimuli. The present study considers a set of 10 physical properties to which the powder dustiness can be attributed. Through a prelimi...
| Publicado en: | Annals of Work Exposures & Health Vol. 63; no. 9; pp. 1029 - 1046 |
|---|---|
| Autores principales: | , , , |
| Formato: | algorithm equations & formulas research tables/charts Journal Article |
| Publicado: |
Oxford University Press / USA
Nov2019
|
| 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=139643787&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 139643787 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 23987308 KJ1E jtl: Annals of Work Exposures & Health issn: 23987308 maglogo: N pubinfo: dt: Nov2019 vid: 63 iid: 9 pid: 622 pub: Oxford University Press / USA artinfo: ui: 139643787 139643787 139643787 10.1093/annweh/wxz065 139643787 ppf: 1029 ppct: 17 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Powder Intrinsic Properties as Dustiness Predictor for an Efficient Exposure Assessment? aug: au: Shandilya, Neeraj Kuijpers, Eelco Tuinman, Ilse Fransman, Wouter affil: TNO, Utrechtseweg, HE Zeist, The Netherlands sug: subj: Dust Analysis Powders Air Pollutants, Occupational Aerosols Particle Size Kinetics ab: Dustiness is not an intrinsic physically defined property of a powder, but the tendency of particles to become airborne in response to mechanical and/or aerodynamic stimuli. The present study considers a set of 10 physical properties to which the powder dustiness can be attributed. Through a preliminary investigation of a standardized continuous drop test scenario, we present first set of results on the varying degrees or weights of influence of these properties on the aerosolization tendency of powder particles. The inter-particle distance is found to be the most dominant property controlling the particle aerosolization, followed by the ability of powder particles to get electrostatically charged. We observe the kinetics involved during powder aerosolization to be governed by two ratios: drag force/cohesive force and drag force/gravitational force. The converging tendencies in these initial results indicate that these physical properties can be used to model dustiness of falling powder, which can eventually be used in risk assessment tools for an efficient exposure estimation of the powders. pubtype: Academic Journal doctype: algorithm equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|