From workplace air measurement results toward estimates of exposure? Development of a strategy to assess exposure to manufactured nano-objects

  • Derk Brouwer
  • Birgit van Duuren-Stuurman
  • Markus Berges
  • Elzbieta Jankowska
  • Delphine Bard
  • Dave Mark
Special focus: Environmental and human exposure to nanomaterials

Abstract

In the past few years, an increasing number of studies on workplace air measurements on manufactured nano-materials and -objects have been published. Most of the studies had a more explorative character, so a direct interpretation to workers” exposure for a given exposure situation, activity, or process is not a straight-forward process. In general, the studies use a quite similar package of devices for near real-time monitoring of particle number- and mass concentration in size ranges <100 nm up to 10 μm, and the collection of samples for off-line characterization of air samples. Various approaches for addressing background concentrations and its use to indicate the potential for exposure to nano-objects could be observed. Within the EU-sponsored NANOSH project, a harmonized approach for measurement strategy, data analysis and reporting was developed. In addition to time/activity–concentration profiles as reported by most studies, this approach enables a first step to estimate the potential for exposure to manufactured nano-objects, more quantitatively. The NANOSH data will be collated into a base, which may form the starting point for a harmonized database facilitating overall analysis in near future, to derive estimates for exposure for several exposure situations.

Keywords

Workplace air measurements Manufactured nano-objects Inhalation exposure Surface area Particle number concentration Agglomerates Decision logic Occupational health EHS 

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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Derk Brouwer
    • 1
  • Birgit van Duuren-Stuurman
    • 1
  • Markus Berges
    • 2
  • Elzbieta Jankowska
    • 3
  • Delphine Bard
    • 4
  • Dave Mark
    • 4
  1. 1.Food and Chemical Risk AssessmentTNO Quality of LifeZeistThe Netherlands
  2. 2.DGUV-BGIASankt AugustinGermany
  3. 3.CIOP-PIBWarsawPoland
  4. 4.Health and Safety LaboratoryBuxtonUK

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