00000caa a22000003i 4500 UP-1685594773862408499 Buklod 20210324110542.0 m | | ta 210323s2019 xx r |||| u|eng d (iLib)UPBAG-00039569118 STII-DOST BAG rda eng ARTICLE-2870 Iwaoka, Kazuki author. Preliminary radiological survey on high rare-earth containing area in San Vicente, Philippines [Research note] by Kazuki Iwaoka, Lorna Jean H. Palad, Christopher O. Mendoza, Fe M. Dela Cruz, Masahiro Hosoda, Shinji Tokonami, Eliza B. Enriquez, Chitho P. Feliciano, and Reiko Kanda. 2019. pages 499-502 maps 26 cm text rdacontent unmediated rdamedia volume rdacarrier Includes bibliographical references (pages 501-502) Erawan Beach area in San Vicente, Palawan Island, Philippines contains rare-earth elements and natural radioactive nuclides at high levels. If the development of mineral resources starts, environmental impacts will be a significant concern for residents in the area. In this study, a preliminary radiological survey on ambient dose equivalent rate and dust concentration was performed in the Erawan Beach area. The ambient dose equivalent rates in each site ranged from 0.060 to 0.81 µSv h−1. External gamma radiation exposures estimated from these values were lower than the reference level range (1−20 mSv y−1) for abnormally high levels of natural background radiation described in the ICRP Publication 103. The dust concentrations in each site ranged from 0.40 to 0.76 mg m−3, which were relatively higher than the typical dust concentration in air (0.05 mg m−3). Based on estimation from the results of the ambient dose equivalent rates and dust concentrations, inhalation radiation exposure due to natural radioactive nuclides in dust will likely be less than external gamma radiation exposure. (Author's abstract) Engineering. Dose rate. High-level environmental radiation areas. Natural radioactive nuclides. Kanda, Reiko author. Feliciano, Chitho P. author. Tokonami, Shinji author. Enriquez, Eliza B. author. Hosoda, Masahiro author. Dela Cruz, Fe M. author. Mendoza, Christopher O. author. Palad, Lorna Jean H. author. The Philippine Journal of Science Vol. 148, no. 3, September 2019. Request full-text access via UPB University Library through https://forms.gle/KZjBv7aRtY6jiL5E9 (viewed 23 March 2021) FI UPBAG UPBAG-MAIN ARTICLE-2870 Analytics