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KMID : 0385520180310040149
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Analytical Science & Technology
2018 Volume.31 No. 4 p.149 ~ p.160
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Study on the determination methods of the natural radionuclides (238U, 232Th) in building materials and processed living products
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Lee Hyun-Woo
Lim Jong-Myoung
Lee Hoon
Park Ji-Young
Jang Mee
Lee Jin-Hong
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Abstract
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A large number of functional living products are being produced for eco-friendly or health-promoting purposes. In the manufacturing process, such products could be adulterated with raw materials with high radioactivity, such as monazite and tourmaline. Thus, it is essential to manage raw materials and products closely related to the public living. For proper management, an accurate radioactivity data of the processed products are needed. Therefore, it is essential to develop a rapid and validated analytical method. In this study, the concentration of the radioactive and in building materials (e.g., tile, cement, paint, wall paper, and gypsum board) and living products (e.g., health products, textiles, and minerals) were determined and compared by ED-XRF and ICP-MS. By comparing the results of both methods, we confirmed the applicability of the rapid screening and precise analysis of ED-XRF and ICP-MS. In addition, and levels were relatively lower in building materials than in living products. Particularly, content in 6 of 47 living products exceeded (maximum ) the standard limit of content in raw material ().
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KEYWORD
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uranium, thorium, ED-XRF, ICP-MS, building materials, living product
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