N051
PAO
AEROSOL AS REPLACEMENT FOR DOP
Naoki Sugita1), Akira Yokochi2)
1)Midori Anzen
Tel :
+81-48-936-0314 Fax :
+81-48-936-0311 e-mail :
MAZ00518@nifty.ne.jp
2)
ABSTRACT
DOP
(diethylhexyl phthalate) aerosol is widely used as
test particles of collection efficiency of air filters. However, DOP is the material listed in the
endocrine disrupting chemicals and the confirmed carcinogens to animals. The
research on replacement materials of DOP has been carried out for many years
especially in microelectronics and atomic energy industries, and the Japan Air Cleaning
Association (JACA) published the guideline of substituting materials of DOP in
2001, based on basic research and successive experiments performed by JACA’s Committee. Their report will be reviewed in this
presentation.
The
required properties for the replacement aerosol are having the same performance
for the fractional collection efficiency of air filters, stable generation and
safe for human health. The filters used
in the tests are ULPA, HEPA and quasi-HEPA filters in the size of 610mm*610mm*150mm.
The test aerosols were DOP, PAO (poly-alpha-olefin),
colloidal silica, fumed silica and PSL (polystyrene latex). The particle generation rate and the frequency
distribution were measured in the size range of 0.1-1.0μｍ. As the test results of PAO aerosol in
comparison with those of DOP aerosol, the fractional collection efficiency well
agreed with each other. PAO is not involved
in the list of endocrine disruptors and its aerosol indicates the equal
performance to the conventional DOP aerosol. With these results, PAO is recommended as the
replacement aerosol of DOP as the test particles of filters.