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• W4308152652 endingPage "106564" @default.
• W4308152652 startingPage "106564" @default.
• W4308152652 abstract "Determination of 99 Tc in various environmental samples is important not only for radioactive assessment but also for geochemical studies. In this work, we aim to develop a method for the monitoring of 99 Tc in solid environmental samples. Alkali fusion instead of acid digestion was used for the dissolution of Tc from the sample. Therefore, the loss of Tc during sample preparation was negligible. The adsorption behavior of Re (as an analog of Tc) on the TRans Uranium elements (TRU) resin was investigated. Based on the results, for the first time, a simple separation method for Tc was established by using TRU resin in alkaline solution. Water was used for the elution of Tc from the resin column and the eluent could be directly injected to triple quadrupole inductively coupled plasma mass spectrometry (ICP-MS/MS) for Tc measurement. The chemical recoveries for solid environmental samples (< 1 g) were beyond 85% and the whole analytical procedure could be finished within 3.5 h. High decontamination factors were obtained for the interfering elements. Mo isobaric interference was further removed by the introduction of O 2 into the instrument as reaction gas. The detection limit of 99 Tc was calculated to be 0.04 pg g-1 (for 1 g solid sample). Th developed method was suitable for the rapid monitoring of 99 Tc in solid environmental samples for emergency response. Geological samples were used for method validation and the method was finally used for the determination of 99 Tc in real radioactive contaminated samples. • Lab prepared 97 Tc tracer was employed for 99 Tc determination. • Rapid alkali fusion was used for Tc dissolution from solid environmental samples. • Tc was separated by using a single TRU column directly in alkaline solution. • ICP-MS/MS measurement with O 2 as reaction gas ensured the sufficiently remove of trace amount of Mo interference. • This method was suitable for rapid monitoring of 99 Tc for emergency response." @default.
• W4308152652 created "2022-11-08" @default.
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• W4308152652 date "2022-12-01" @default.
• W4308152652 modified "2023-09-30" @default.
• W4308152652 title "Determination of 99Tc in solid environmental samples by combining alkali fusion and rapid separation using TRans Uranium elements resin in alkali medium to triple quadrupole inductively coupled plasma mass spectrometry" @default.
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• W4308152652 doi "https://doi.org/10.1016/j.sab.2022.106564" @default.
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