用于通过电感耦合等离子体质谱法测量淡水样品中总铀和235U/238U同位素比值的快速铀预浓缩和分离方法。
Rapid uranium preconcentration and separation method from fresh water samples for total U and 235U/238U isotope ratio measurements by ICP-MS.
作者信息
Tagami K, Uchida S
机构信息
Office of Biospheric Assessment for Waste Disposal, National Institute of Radiological Sciences, Anagawa 4-9-1, Inage-ku, Chiba 263-8555, Japan. k
出版信息
Anal Chim Acta. 2007 May 29;592(1):101-5. doi: 10.1016/j.aca.2007.04.017. Epub 2007 Apr 19.
A simple and rapid method using TRU resin cartridges (Eichrom Technologies, Inc., USA) and quadrupole ICP-MS for total uranium (U) and 235U/238U isotope ratio measurements in fresh water samples was investigated. After U extraction on the resin by sample solution loading, three alkaline reagents, tetramethyl ammonium hydroxide (TMAH), NaOH and NH4OH were studied for U elution behavior from the resin cartridges and applicability of these eluates was evaluated with respect to direct introduction to ICP-MS. Among the studied eluants, TMAH showed the best results with high U recovery and no counting interferences with internal standard elements such as thallium and bismuth. Moreover, U in water samples was separated from many major and minor elements with the TRU cartridges. Almost all U was concentrated in 10 mL of 0.014 M TMAH in 2 h using 200 mL of water sample.
研究了一种使用TRU树脂柱（美国Eichrom Technologies公司）和四极杆电感耦合等离子体质谱仪测定淡水样品中总铀（U）和235U/238U同位素比值的简单快速方法。通过加载样品溶液在树脂上萃取铀后，研究了三种碱性试剂，即氢氧化四甲铵（TMAH）、NaOH和NH4OH从树脂柱上洗脱铀的行为，并评估了这些洗脱液直接引入电感耦合等离子体质谱仪的适用性。在所研究的洗脱剂中，TMAH显示出最佳结果，铀回收率高，且对铊和铋等内标元素无计数干扰。此外，使用TRU柱可将水样中的铀与许多主要和次要元素分离。使用200 mL水样，在2小时内几乎所有的铀都浓缩在10 mL 0.014 M的TMAH中。
Zotero 插件