Size-Resolved Characterization of Particles and Fibers Released during Abrasion of Fiber-Reinforced Composite in a Workplace Influenced by Ambient Background Sources

Kirsten I. Kling, Marcus Levin, Alexander C. O. Jensen, Keld A. Jensen, Ismo K. Koponen

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    Abstract

    We demonstrate the use of high-to low-resolution microscopy and particle chemical analysis during normal vacuum and cryo-conditions to identify the nature and relative abundances of process-generated particles and fibers from sanding of a glass and carbon fiber epoxy layer-composite in a workplace influenced by both indoor and ambient background sources. The study suggests that a proper exposure characterization requires multiple techniques covering wide size ranges to reach a conclusion. Besides a rise in number concentration due to release of particles during the sanding, a significant contribution of ambient particles to the background in the production facility was observed in the sub-micron size range. Fibers are posing a dominant exposure risk in the micron size range, with carbon fibers dominating in count.
    Original languageEnglish
    JournalAerosol and Air Quality Research
    Volume16
    Issue number1
    Pages (from-to)11-24
    Number of pages14
    ISSN1680-8584
    DOIs
    Publication statusPublished - 2016

    Keywords

    • Fiber mats
    • Particle identification
    • Epoxy
    • Production emission
    • HR-TEM

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