Category:Class:Dose assessment for fine particles: Difference between revisions
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For dose over a lifetime the formula can be simplified to D = (IR)(P)(RF)/BW | For dose over a lifetime the formula can be simplified to D = (IR)(P)(RF)/BW | ||
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[[Category:Class:Dose assessment for fine particles]] | [[Category:Class:Dose assessment for fine particles]] | ||
Revision as of 14:40, 27 March 2007
D = ((IR)(P)(RF)(ET)(EF)(ED))/(BW)(AT) where
- D = dose (mg/kg.day)
- IR = inhalation rate (m3/h)
- P = particle concentration in air (mg/m3)
- RF = respirable fraction of particles (dimensioless)
- ET = exposure time (hours/day)
- EF = exposure frequency (days/year)
- ED = exposure duration (years)
- BW = body weight (kg)
- AT = averaging time (days) [1]
For dose over a lifetime the formula can be simplified to D = (IR)(P)(RF)/BW
- ↑ Schwela D, Morawska L, Kotzias D (Eds.) 2002. Guidelines for concentration and exposure-response measurement of fine and ultra fine particulate matter for use in epidemiological studies. WHO and JRC Expert Task Force meeting, Ispra, Italy, November 2002.
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