Comparison of a radiation counting method and ICP-MS for the determination of99Tc in environmental samples
Comparison of a radiation counting method and ICP-MS for the determination of99Tc in environmental samples
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DOI：
10.1007/bf02389763
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发表时间：
1996-12
影响因子：
1.6
通讯作者：
K. Tagami;S. Uchida;M. García-León
中科院分区：
文献类型：
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作者：
K. Tagami;S. Uchida;M. García-León
使用四个辐射源比较了辐射和非辐射计数方法之间的99 Tc测量结果，其中先前已使用气流正比计数器或GM计数器确定了99 Tc。每个99 Tc源由聚酯薄膜结合的不锈钢板组成。对从爱尔兰海采集的海藻进行了分析，并将99 Tc电镀在压片上。每个样品中的99 Tc被分离，并通过电感耦合等离子体质谱法（ICP-MS）再次测量。用2 M HNO 3和2 M NaOH连续从每个样品中除去Tc。将含Tc的溶液调至0.1M HNO_3后，用新型萃取色谱树脂萃取Tc，使其与Ru分离。样品的总回收率基本相同，平均为91%。用辐射和非辐射计数法测量99 Tc的结果吻合得很好。
Results of99Tc measurements between radiation and non-radiation counting methods were compared using four radiation sources for which99Tc has been previously determined with a gas-flow proportional counter or a GM counter. Each99Tc source consisted of a stainless steel planchet bound by mylar films. Seaweeds collected from the Irish Sea were analyzed and99Tc was electroplated on the planchet. The99Tc in each sample was separated and measured again by inductively coupled plasma mass spectrometry (ICP-MS). Tc was continuously removed from each sample with 2M HNO3and 2M NaOH. After the solution containing Tc was adjusted to 0.1M HNO3, Tc was extracted on a novel extraction chromatographic resin to separate it from Ru. The total recoveries for Tc on the planchet samples were almost the same with an average of 91%. The results of99Tc measurements by both radiation and non-radiation counting methods agreed well with each other.