抄録
Passive diffusion sampling has been widely used to monitor organic and inorganic pollutants in the environment. We herein developed a new and simple passive diffusion sampling method to monitor 14C in the indoor working environment of radioisotope facilities. The badge-type Shikata sampler is an open-end type with no diffusion cap that fits a collection filter with a diameter of 25 mm. This sampler could efficiently collect indoor 14C with good reliability and a collection efficiency that was 10-fold higher than that of the conventional active pumped method. The Shikata sampler is small, simple, and easy to handle. It may be subsidiary used to monitor indoor 14C concentrations in radioisotope working rooms, in which radioactivity must be measured once a month as recommended by the Industrial Safety and Health Law.
