Personal monitoring of exposure to particulate matter with a high temporal resolution.

Broich AV, Gerharz LE, Klemm O

Research article (journal) | Peer reviewed

Abstract

BACKGROUND Continuous monitoring of air quality is implemented by government institutions at fixed ambient sites. However, the correlation between fixed site measurements and exposure of individual persons to air contaminants is likely to be weak. MATERIALS AND METHODS We measured particulate matter both outdoors and indoors by following the spatial movement of individuals. Sixteen test persons took part and carried a measurement backpack for a 24-h period. The backpack was comprised of a Grimm Aerosol Spectrometer model 1.109, a GPS device, and a video camera for tracking of human behavior. The spectrometer provided information about particle numbers and mass in 32-size classes with a high temporal resolution of 6 s. RESULTS The personal exposure of individuals during 24 h could significantly exceed the outdoor particulate matter (PM)(10) concentrations measured at the fixed sites. The average 24-h exposure of all test persons for PM(10) varied from 27 to 322 μg m(-3). Environmental tobacco smoke and cooking emissions were among the main indoor sources for PM. The amount of particulate matter a test person was exposed to was highly dependent on the spatial behavior and the surrounding microenvironment conditions. DISCUSSION Large-scale experiments including personal measurements might help to improve modeling approaches to approximate the actual exposure on a statistically sound basis.

Details about the publication

JournalEnvironmental Science and Pollution Research
Volume19
Issue7
Page range2959-72
StatusPublished
Release year2012 (21/02/2012)
Language in which the publication is writtenEnglish
DOI10.1007/s11356-012-0806-3
KeywordsMicroenvironment-related pollution; Individual behavior; GPS; Personal exposure; Activity patterns; PM1; PM2.5; PM10

Authors from the University of Münster

Gerharz, Lydia
Institute for Geoinformatics (ifgi)
Klemm, Otto
Professur für Klimatologie (Prof. Klemm)