Development of Sr-adsorptive fiber with flexible interfacial conformation provided by polymer chains bound on fiber surface for Sr-90 measurement

2016 Fiscal Year Final Research Report

• Project/Area Number: 25420914
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: Shiho ASAI 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力基礎工学研究センター, 研究副主幹 (10370339)
• Co-Investigator(Renkei-kenkyūsha): HANZAWA Yukiko 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力基礎工学研究センター, 技術副主幹 (30354856) ; SAITO Kyoichi 千葉大学, 工学研究科, 教授 (90158915) ; KONDA Miki 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 バックエンド技術部, 技術・技能職 (40753174) ; HORITA Takuma 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力基礎工学研究センター, 技術・技能職 (20767678)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: グラフト重合 / 放射性ストロンチウム / 繊維 / 質量分析 / 放射能分析

Outline of Final Research Achievements

Rapid measurement of Sr-90 in contaminated water generated after Fukushima Daiichi nuclear disaster is required for the quick understanding of the extent of radiation contamination of waters found in and around the site. However, conventional methods for the measurement of Sr-90 are associated with tedious and time-consuming separation procedure, leading to prolonged analytical time. In this study, dicyclohexano-18-crown 6 (DCH18C6)-impregnated fiber has been prepared to achieve efficient separation of Sr.The proposed Sr adsorptive fiber was prepared based on graft polymerization technique,providing hydrophobic interfacial phase to be utilized for impregnating DCH18C6 on the fiber surface. With such interfacial phase, Sr ions can be efficiently extracted with DCH18C6. The time to reach adsorption equilibrium for the Sr adsorptive fiber is roughly 100 times faster than that of a commercially available Sr adsorbent.

Free Research Field

放射性核種の分析法開発