Online solid-phase extraction ICP-MS for determination of technetium-99 in environmental samples

Matsueda, Makoto ; Terashima, Motoki ; Takagai, Yoshitaka*

Technetium-99 ( $^{99}$ Tc) is a pure beta-emitting radionuclide with a long half-life (210 000 years), produced with a yield of about 6% during the fission of $^{235}$ U and $^{239}$ Pu. The properties of high mobility in environment and concentrated into specific seaweeds were applied as a tracer for radioisotopes released into the environment. Inductively coupled plasma-mass spectrometry (ICP-MS) is the main method for $^{99}$ Tc analysis; however, the isobars ( $^{99}$ Ru and $^{98}$ MoH) interfere the quantification. In this study, a multi-stage separation and analysis system (online SPE-ICP-MS) for $^{99}$ Tc was constructed by attaching a solid phase extraction (SPE) resin to a flow injection (FI) system and combining it with a collision reaction cell (CRC) in an ICP-MS. In addition, a high sensitivity for detecting trace amounts of $^{99}$ Tc was developed.

Language	:	Japanese
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Meeting title	:	第83回分析化学討論会
Held date	:	2023/05
Location (city)	:	富山
Location (country)	:	日本
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Keywords	:	Fukushima Daiichi Nuclear Power Station Accident; 福島第一原子力発電所事故; テクネチウム-99; 環境動態; フローインジェクション; ICP-MS; リアクションセル
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Cooperating Institute	:	福島大学

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Registration No. : BB20221897
JAEA Abstracts No. :
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