現場試験用0. 15μm単分散DOPエアロゾル発生装置の開発 [in Japanese] Development of 0. 15 μm Monodisperse DOP Aerosol Generator for In-place Filter Test [in Japanese]
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Recently the Japanese Industrial Standard on HEPA Filters for radioactive aerosols (JIS Z 4812) was revised, in which the standard particle size was changed to 0.15μm from 0.3μm. A new 0.15μm DOP aerosol generator was developed for in-place filter testing. The aerosol generator is of the vaporization-condensation type. The generated DOP aerosol were found to be quasi-monodispersive with a geometric standard deviation (σg) of less than 1.2 by laser aerosol spectrometer measurements. A typical size distribution of test aerosol was a count median diameter (CMD)=0.151μm and σg=1.15. The number concentration was 1.4×10<sup>4</sup>/cm<sup>3</sup> at an air flow rate of 7, 800m<sup>3</sup>/h. The stability, portability and operability of the new generator were also evaluated.
- Jpn. J. Health Phys.
Jpn. J. Health Phys. 31(1), 33-39, 1996-03
Japan Health Physics Society