Sexton 2004 - "Comparison of Personal, Indoor, and Outdoor Exposures to Hazardous Air Pollutants in Three Urban Communities"

Sexton, Ken; Adgate, John L; et al.
"Comparison of Personal, Indoor, and Outdoor Exposures to Hazardous Air Pollutants in Three Urban Communities"
Environmental Science and Technology
2004; v.38, n.2; pp.423-430
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The authors measure personal, indoor, and outdoor exposures to 15 VOCs in three different neighborhoods of Minneapolis/St. Paul, MN. They found that outdoor community air monitors greatly underestimate personal exposures and that even indoor monitors underestimate personal exposure. For example, for benzene, the personal/outdoor (P/O) ratio of estimated relative concentrations is 6.8, while the personal/indoor concentration (P/I) is 1.6.

The Personal/Outdoor and Personal/Indoor estimated concentrations are:

VOC P/O P/I
Benzene 6.9 1.6
Toluene 27.1 1.3
Ethylbenzene 18.8 1.6
m-lp-xylene 19.2 1.5
o-xylene 18.0 1.6

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