Separation Procedure for the Determination of Technetium-99 in Soil by ICP-MS
Separation Procedure for the Determination of Technetium-99 in Soil by ICP-MS
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DOI：
10.1524/ract.1993.63.special-issue.69
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发表时间：
1993-12
影响因子：
1.8
通讯作者：
K. Tagami;S. Uchida
中科院分区：
文献类型：
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作者：
K. Tagami;S. Uchida
本文报道了一种用电感耦合等离子体质谱法测定土壤中Tc的简便方法。所涉及的程序如下：1）在950°C下在燃烧装置中挥发锝3小时，并将其捕获在K2 CO 3溶液中。2)在加入H2 O2之后，锝被萃取到环己酮中以除去Ru，Ru也具有质量99的同位素。3)将有机层中的Tc反萃取到去离子水中。4)用HNO 3酸化溶液，并通过电感耦合等离子体质谱法（ICP-MS）测量^'Tc。整个过程的化学回收率为52- 64%。还用燃烧装置研究了土壤中Tc开始蒸发的温度。在日本采集的土壤样品中测定了锝-99浓度和锝/铯比值。研究了用燃烧装置分离。通过电感耦合等离子体质谱法（ICP-MS）测量溶液中的总浓度。选择ICP-MS是因为其能够测定痕量元素;据报道，它可以高灵敏度检测环境中的Tc [8，9，10]。
A simple method for determination of "Tc in soil by ICPMS is reported. The procedures involved are as follows: 1) Technetium is volatilized in a combustion apparatus for 3 hours at 950°C and trapped in a K2CO3 Solution. 2) After addition of H2O2, technetium is extracted into cyclohexanone to remove Ru which has also an isotope of mass 99. 3) Tc in the organic layer is back-extracted into deionized water. 4) The Solution is acidified with HNO3, and ^'Tc is measured by inductively coupled plasma mass spectrometry (ICP-MS). The chemical recovery in the whole procedure is 52—64%. The temperature at which '®Tc in soil begins to evaporate was also investigated with the combustion apparatus. The technetium-99 concentration and the ®'Tc/'^''Cs ratio were determined in soil samples collected in Japan. Separation of with a combustion apparatus was investigated. in Solution is measured by inductively coupled plasma mass spectrometry (ICP-MS). ICP-MS was chosen because of its capability for determination of trace elements; it has been reported to detect environmental '®Tc with a high sensitivity [8, 9, 10],