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首页> 外文会议>International Symposium on Harmonization of Health Related Environmental Measurements Using Nuclear and Isotopic Techniques held in Hyderabad, India, 4-7 November 1996 >Application of pixe, NAA and ICP techniques to the determination of trace elements in foot and diet samples
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Application of pixe, NAA and ICP techniques to the determination of trace elements in foot and diet samples

机译：pixe，NAA和ICP技术在脚和饮食样品中微量元素测定中的应用

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The particle induced X ray emission (PIXE) technique was applied to the measurement of trace elements in total diet samples collected in Japan for estimation of their daily dietary intake. The results of PIXE were compared with instrumental neutron activation analysis (INAA) results. Concentrations of Cl, Mn and Zn and PIXE analysis agreed well with the results from INAA, but Ca, Fe and Cu concentrations varied between these two techniques. PIXE data were preliminarily compared with INAA and inductively coupled plasma-atomic emission spectrometry (ICP-AES) results using a type of tea sample. A little higher concentration of Cu than that by PIXE and a much lower value than that by INAA were indicated. For Zn, concentrations by PIXE and ICP-AES agreed well with each other, while INAA gave a much lower value. From those results, PIXE was demonstrated to be recommendable for the determination of Ca, Mn, Fe, Cu and Zn in the dried and homogenized diet sample, while INAA was found to be better for determining Na, Al, Cl and I, both being convenient non-destructive analytical methods. Furthermore, internal radiation doses by ~(137)Cs and ~(90)Sr in the average Japanese were estimated to be 2.30 um Sv/a and 1.27 um Sv/a, respectively, as the effective dose euqivalents, using the literature data and the daily intake for K and Ca currently obtained. Moreover, ICP-mass spectrometry (MS), known for high sensitivity and selectivity, was used to determine Th and U in diet samples.
机译：粒子诱导X射线发射（PIXE）技术用于测量日本收集的总饮食样本中的微量元素，以估计其日常饮食摄入量。将PIXE的结果与仪器中子活化分析（INAA）的结果进行了比较。 Cl，Mn和Zn的浓度以及PIXE分析与INAA的结果吻合得很好，但是这两种技术之间的Ca，Fe和Cu浓度却有所不同。将PIXE数据与INAA进行了初步比较，并使用一种茶样品进行了电感耦合等离子体原子发射光谱（ICP-AES）结果。表明铜的浓度比PIXE的高一点，而比INAA的低得多。对于Zn，PIXE和ICP-AES的浓度相互吻合，而INAA的浓度要低得多。从这些结果来看，PIXE被证明可用于测定干燥和均质饮食样品中的Ca，Mn，Fe，Cu和Zn，而发现INAA则更适合测定Na，Al，Cl和I。方便的无损分析方法。此外，根据文献资料和文献资料，平均日本人的〜（137）Cs和〜（90）Sr的内部辐射剂量估计分别为有效剂量等效当量2.30 um Sv / a和1.27 um Sv / a。当前获得的K和Ca的每日摄入量。此外，以高灵敏度和高选择性而闻名的ICP-质谱（MS）用于测定饮食样品中的Th和U。

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