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首页> 外文期刊>The Analyst: The Analytical Journal of the Royal Society of Chemistry: A Monthly International Publication Dealing with All Branches of Analytical Chemistry >Extraction chromatographic separations and analysis of actinides using sequential injection techniques with on-line inductively coupled plasma mass spectrometry (ICP MS) detection
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Extraction chromatographic separations and analysis of actinides using sequential injection techniques with on-line inductively coupled plasma mass spectrometry (ICP MS) detection

机译：使用顺序注射技术和在线电感耦合等离子体质谱（ICP MS）检测的萃取色谱分离和act系元素分析

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摘要

A sequential injection (SI) separation system has been developed for separation and analysis of Am, Pu, and Np isotopes using on-line inductively coupled plasma mass spectrometry (ICP MS) detection. On-line actinide separations were carried out using an actinide-specific extraction chromatographic material (TRU-resin, Eichrom Industries, Inc. USA). Separations are demonstrated and characterized that are compatible with on-line ICP MS detection and address isobaric (~(241)Am/~(241)Pu, ~(244)Pu/~(24)Cm, ~(238)U/~(238)Pu), molecular (~(238)UH/~(239)Pu), and spectral (~(238)U/~(237)Np) interferences encountered in the analysis of Am, Pu and Np isotopic composition using ICP MS. The effects of reductive sample treatment on the extent of U matrix removal were investigated. Uranium separation factors were limited by the formation of U(IV) species, which exhibited separation behaviors similar to that of Pu(IV) and Np(IV). Nevertheless, separation factors as high as 3.0 X 10~5 can be achieved at the 0.1 mg ml~(-1) U concentration levels using Fe(II) sulfamate as a reductant. The sequential injection (SI) ICP MS technique has been applied towards analysis of Am, Pu, and Np isotopes in a dissolved vitrified nuclear waste sample. Results obtained using the automated separation technique with ICP MS detection were in satisfactory agreement with results obtained using standard analytical methodologies.
机译：已开发出一种顺序注射（SI）分离系统，用于使用在线感应耦合等离子体质谱（ICP MS）检测来分离和分析Am，Pu和Np同位素。使用act系特有的萃取色谱材料（TRU-树脂，Eichrom Industries，Inc.美国）进行carried系在线分离。证明了与在线ICP MS检测和地址同量异位（〜（241）Am /〜（241）Pu，〜（244）Pu /〜（24）Cm，〜（238）U /〜在使用Am，Pu和Np同位素组成进行分析时遇到的（238）Pu），分子（〜（238）UH /〜（239）Pu）和光谱（〜（238）U /〜（237）Np）干扰ICP MS。研究了还原性样品处理对U基质去除程度的影响。铀分离因子受U（IV）物种形成的限制，U（IV）物种表现出与Pu（IV）和Np（IV）相似的分离行为。然而，使用氨基磺酸铁（II）作为还原剂，在0.1 mg ml〜（-1）U浓度水平下，分离因子可达到3.0 X 10〜5。连续进样（SI）ICP MS技术已应用于分析溶解的玻璃化核废料样品中的Am，Pu和Np同位素。使用自动分离技术结合ICP MS检测获得的结果与使用标准分析方法获得的结果令人满意。

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