ABSTRACT
Filtration is the most widely used method for collecting samples of radioactive aerosols. Methods and equipment range from low-volume, miniature lapel samplers (1 L min−1 or less) for collecting aerosols in the breathing zone of individual workers to high-volume samplers (sampling rates up to about 60 m3 h−1) for short-or long-term sampling in the workplace or environment. Many lter media are available for use in collection of airborne particles (cf., Davies, 1973; Brock, 1983; Liu et al., 1983; Brown, 1993; Spurny, 1998; Lee and Mukund, 2001; Lippmann, 2001). Filtration materials include various membranes, as well as cellulose, glass, quartz, and plastic bers. Sintered structures of metals or mineral particles have been used for ltration at high temperatures.
