Abstract Number: 721 Working Group: Instrumentation and Methods
Abstract It is very interested to know the deposition process in the indoor. To keep our good health, an indoor protection method in case of plant accident/disaster, is one of important topics for urgent protective actions. That is because residents, who live around accident site, need to prevent an exposure from toxic gas and aerosols as soon as possible. We developed an evaluation system for sheltering. To evaluate the aerosol behavior using our chamber system, the test of a particle generation is necessary. The iodine mixture particles were evaluated in this study, because the iodine is an important material to evaluate the radiological effects on inhabitants due to a nuclear power plant accident. The iodine mixture particles were generated using the electrospray. Potassium iodide and sodium chloride dissolved in solution for the electrospray. To analyze its chemical compositions as aerosols in the gas phase, the online-measurement technique is required. Therefore, we developed a tandem system that consists of a differential mobility analyzer (DMA), the gas exchange device (GED) and the ICP-MS (DMA – GED – ICP-MS). We will report our method and its results.
This research was supported by the Nuclear Regulation Authority (NRA) and the Japan Atomic Energy Agency (JAEA).