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6. Modelling dermal exposure

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The sixth lecture on modelling exposure for a course held in Norway 2011

Health & Medicine
1 of 22
Modelling dermal exposure John Cherrie
Outline of the talk… ,[object Object],[object Object],[object Object],[object Object],[object Object]
Schneider and colleagues… Schneider et al. Conceptual model for assessment of dermal exposure. Occup Environ Med (1999) vol. 56 (11) pp. 765-73 Surface contamination layer Air compartment Clothing outer layer Skin contamination layer Source Clothing inner layer
Measurement of dermal exposure… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Interception sampling…
Removal sampling…
Fluorescent tracers…
DREAM… van Wendel de Joode et al. DREAM: A method for semi-quantitative dermal exposure assessment. Annals of Occupational Hygiene (2003) vol. 47 (1) pp. 71-87 Emission Deposition Transfer Clothing Body surface factor
DREAM… ,[object Object],[object Object],[object Object],van Wendel de Joode et al. Accuracy of a semiquantitative method for Dermal Exposure Assessment (DREAM). Occup Environ Med (2005) vol. 62 (9) pp. 623-32
Heavy fuel oil (HFO)… ,[object Object],[object Object],[object Object],[object Object]
What is HFO? ,[object Object],[object Object],[object Object]
What are the health concerns? ,[object Object],[object Object],[object Object],[object Object],[object Object]
Composition…
Aims of our study… ,[object Object],[object Object],[object Object]
Methods… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Methods… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Sites investigated… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Dermal exposure by type of site…
DREAM vs measurements…
Task average data… van Wendel de Joode et al. Accuracy of a semiquantitative method for Dermal Exposure Assessment (DREAM). Occup Environ Med (2005) vol. 62 (9) pp. 623-32
The way forward? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Where do we want to go next? ,[object Object],[object Object],[object Object],[object Object],[object Object]

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6. Modelling dermal exposure

Editor's Notes

  1. Because all of these methods produce estimates of exposure in terms of mass per unit area its often assumed they are interchangeable. They are not! Interception methods measure… >> Do the experiment
  2. 50% within +- 100% of average