title: Using smartphone as a motion detector to collect time-microenvironment data for estimating the inhalation dose.
abstract: During the production of iodine-131 from neutron irradiated tellurium dioxide by the dry distillation, a considerable amount of (131)I vapor is dispersed to the indoor air. People who routinely work at the production area may result in a significant risk of exposure to chronic intake by inhaled (131)I. This study aims to estimate the inhalation dose for individuals manipulating the (131)I at a radioisotope production. By using an application installed on smartphones, we collected the time-microenvironment data spent by a radiation group during work days in 2015. Simultaneously, we used a portable air sampler combined with radioiodine cartridges for grabbing the indoor air samples and then the daily averaged (131)I concentration was calculated. Finally, the time-microenvironment data jointed with the concentration to estimate the inhalation dose for the workers. The result showed that most of the workers had the annual internal dose in 1÷6mSv. We concluded that using smartphone as a motion detector is a possible and reliable way instead of the questionnaires, diary or GPS-based method. It is, however, only suitable for monitoring on fixed indoor environments and limited the targeted people.
authors.affiliation: Faculty of Natural Science, Phu Yen University, 18 Tran Phu, Tuy Hoa, Vietnam; Faculty of Physics and Engineering Physics, VNUHCM-University of Science, 227 Nguyen Van Cu, Ho Chi Minh City, Vietnam. Electronic address: tranxuanhoi@pyu.edu.vn.
authors.forename: Tran Xuan
authors.initials: TX
authors.lastname: Hoi
authors.affiliation: Faculty of Physics and Engineering Physics, VNUHCM-University of Science, 227 Nguyen Van Cu, Ho Chi Minh City, Vietnam. Electronic address: htphuong@hcmus.edu.vn.
authors.forename: Huynh Truc
authors.initials: HT
authors.lastname: Phuong
authors.affiliation: Training Center, Nuclear Research Institute, 01 Nguyen Tu Luc, Da Lat, Vietnam. Electronic address: ngvhung58@gmail.com.
authors.forename: Nguyen
authors.initials: N
authors.lastname: Van Hung
mesh_terms: D016902:Air Pollution, Indoor; D004784:Environmental Monitoring; D006801:Humans; D019570:Inhalation Exposure; D007457:Iodine Radioisotopes / Q000493:pharmacokinetics*; D000068997:Smartphone
chemical_list: D007457:Iodine Radioisotopes; C000614965:Iodine-131
keywords: Inhalation dose; Iodine-131; Motion detector; Time-microenvironment