Metrological Assessment of a Portable Analyzer for Monitoring the Particle Size Distribution of Ultrafine Particles.
Adverse health effects caused by worker exposure to ultrafine particles have been detected in recent years. The scientific community focuses on the assessment of ultrafine aerosols in different microenvironments in order to determine the related worker exposure/dose levels. To this end, particle siz...
| Publicado en: | Annals of Occupational Hygiene Vol. 58; no. 7; pp. 860 - 877 |
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| Autores principales: | , , , |
| Formato: | equations & formulas research tables/charts Journal Article |
| Publicado: |
Oxford University Press / USA
Aug2014
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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=97422013&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 97422013 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00034878 JQ4 jtl: Annals of Occupational Hygiene issn: 00034878 maglogo: N pubinfo: dt: Aug2014 vid: 58 iid: 7 pid: 622 pub: Oxford University Press / USA artinfo: ui: 97422013 97422013 97422013 10.1093/annhyg/meu025 97422013 ppf: 860 ppct: 17 formats: fmt: @attributes: type: P tig: atl: Metrological Assessment of a Portable Analyzer for Monitoring the Particle Size Distribution of Ultrafine Particles. aug: au: Stabile, Luca Cauda, Emanuele Marini, Sara Buonanno, Giorgio affil: 1. Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio , via Di Biasio 43, 03043 Cassino (FR) , Italy sug: subj: Particle Size Evaluation Particulate Matter Analysis Environmental Monitoring Equipment and Supplies Portable Equipment Evaluation Occupational Exposure Evaluation Environment Classification Fieldwork Experimental Studies Analysis of Variance Post Hoc Analysis Confidence Intervals Descriptive Statistics Funding Source ab: Adverse health effects caused by worker exposure to ultrafine particles have been detected in recent years. The scientific community focuses on the assessment of ultrafine aerosols in different microenvironments in order to determine the related worker exposure/dose levels. To this end, particle size distribution measurements have to be taken along with total particle number concentrations. The latter are obtainable through hand-held monitors. A portable particle size distribution analyzer (Nanoscan SMPS 3910, TSI Inc.) was recently commercialized, but so far no metrological assessment has been performed to characterize its performance with respect to well-established laboratory-based instruments such as the scanning mobility particle sizer (SMPS) spectrometer. The present paper compares the aerosol monitoring capability of the Nanoscan SMPS to the laboratory SMPS in order to evaluate whether the Nanoscan SMPS is suitable for field experiments designed to characterize particle exposure in different microenvironments. Tests were performed both in a Marple calm air chamber, where fresh diesel particulate matter and atomized dioctyl phthalate particles were monitored, and in microenvironments, where outdoor, urban, indoor aged, and indoor fresh aerosols were measured. Results show that the Nanoscan SMPS is able to properly measure the particle size distribution for each type of aerosol investigated, but it overestimates the total particle number concentration in the case of fresh aerosols. In particular, the test performed in the Marple chamber showed total concentrations up to twice those measured by the laboratory SMPS—likely because of the inability of the Nanoscan SMPS unipolar charger to properly charge aerosols made up of aggregated particles. Based on these findings, when field test exposure studies are conducted, the Nanoscan SMPS should be used in tandem with a condensation particle counter in order to verify and correct the particle size distribution data. pubtype: Academic Journal doctype: equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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