Rapid determination of technetium-99 by automatic solid phase extraction and inductively coupled plasma mass spectrometry
Rapid determination of technetium-99 by automatic solid phase extraction and inductively coupled plasma mass spectrometry
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DOI：
10.1039/c4ra06591c
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发表时间：
2014-08
期刊：
影响因子：
3.9
通讯作者：
Hsin-Chieh Wu;Te-yen Su;T. Tsai;S. Jong;Ming-Hui Yang;Y. Tyan
中科院分区：
文献类型：
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作者：
Hsin-Chieh Wu;Te-yen Su;T. Tsai;S. Jong;Ming-Hui Yang;Y. Tyan
锝-99（99 Tc）是由铀-235（235 U）和钚-239（239 Pu）裂变产生的一种重要核素，半衰期长（t1/2 = 2.1 × 105年），是环境分析中的靶元素。本研究开发了一种99 Tc分析技术，使用TEVA树脂自动固相萃取（SPE）和电感耦合等离子体质谱（ICP-MS）。99 Tc的化学回收率为94.15 ± 3.14%，掺入99 Tc的水泥固化样品的最小可检测放射性（MDA）为1.5 mBq g−1（2.4 pg mL−1）。本研究利用该方法对环境样品标准参考物质进行了测定。该方法比传统的放射化学方法更方便，减少了分析所需的时间，试剂的消耗和操作人员的辐射暴露。
Technetium-99 (99Tc) is a key nuclide, produced by the fission of uranium-235 (235U) and plutonium-239 (239Pu), through a cascade decay process, and is one kind of target element in environmental analysis due to its long half-life (t1/2 = 2.1 × 105 years). This study developed a 99Tc analytical technique using automatic solid phase extraction (SPE) with TEVA resin and inductively coupled plasma mass spectrometry (ICP-MS). The chemical recovery of 99Tc was 94.15 ± 3.14% and the minimum detectable activity (MDA) for cement solidified samples spiked with 99Tc was 1.5 mBq g−1 (2.4 pg mL−1). In this study, standard reference material (SRM), an environmental sample was measured by this analytical method. The proposed method is more convenient than traditional radiochemical methods in terms of reducing the time required for analysis, the consumption of reagents, and radiation exposure of operators.