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J.Health Sci., 56(3), 331-340, 2010
-Research Letter-
Evaluation of a Compact Sampler Designed for the Simultaneous Collection of Atmospheric Polycyclic Aromatic Hydrocarbons in Size-fractionated Particulate Matter and the Gaseous Phase
Masao Kishida,*, a, b, 1 Takahide Okamoto,c
Keiichi Fujimori,c Kiyoshi Imamura,a
Yasuki Nishimura,d Yasuhiko Shibutani,c
and Hiroshi Bandowe
aResearch Institute of Environment, Agriculture and Fisheries, Osaka Prefectural Government, 1-3-62 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan,
bEnvironmental Management Division, Department of Environment, Agriculture, and Fisheries, Osaka Prefectural Government, 2-1-2 Otemae, Chuo-ku, Osaka 540-0008, Japan,
cCollege of Engineering, Osaka Institute of Technology, 5-16-1 Ohmiya, Asahiku, Osaka 535-8585, Japan,
dCustomer Support of Osaka, GL Science, Inc., 4-1-48 Temma, Kita-ku, Osaka 530-0043, Japan and
eGraduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
1Present address: Environmental Management Division, Department of Environment, Agriculture, and Fisheries, Osaka Prefectural Government, 2-1-2 Otemae, Chuo-ku, Osaka 540-0008, Japan.
A compact sampler consisting of a three-stage cascade impactor and a holder for polyurethane form (PUF) plugs was designed for the simultaneous collection of atmospheric polycyclic aromatic hydrocarbons (PAHs) in fine particles and the gaseous phase. To evaluate its collection efficiency, air was passed through a quartz-fiber filter (QFF) spiked with 28 authentic PAHs and then through cleaned PUF plugs and backup filters for 24hr in the dark at a constant room temperature (20 or 35°C). PAHs retained on the QFF and those trapped within PUF plugs and backup filters were separately determined. We observed no obvious difference in recoveries between 20 and 35°C except for benzo[a]anthracene (BaA) and triphenylene+chrysene. Most of the PAHs with low molecular weight (166-202) vaporised from the QFF and were trapped in the PUF plugs and backup filters at recoveries of 42-108%, while those with high molecular weight (≥252) were largely retained on the QFF (recoveries of 75-114%). BaA and triphenylene+chrysene (molecular weight=228) were largely retained on the QFF at 20°C (recoveries of ≥84%), but at 35°C the recovery values decreased to levels similar to those trapped with PUF plugs and backup filters (recoveries of 40-56%). The proposed sampler was applied in an investigation of ambient PAHs at a roadside site in a heavy-traffic area in Osaka, Japan, during August 2006 and February 2007.
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