改进Apsara研究反应器单标准NAA法测定玻璃基质中微量元素的应用

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-09-08 DOI:10.1016/j.radphyschem.2025.113295

S.K. Samanta , Purbali Das , S. Sodaye , R. Acharya

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引用次数: 0

摘要

利用印度孟买BARC Apsara-U研究堆堆芯辐照位置，对基于k0的内单标准中子活化分析（IM-NAA）技术进行了优化。采用双监测和多监测两种方法，采用镉比法对外热中子形状参数α进行了评价，f值来源于197Au。通过分析美国地质调查局认证标准物质（USGS CRM）、花岗岩（G-2）和流纹岩玻璃山（RGM-1），以197Au和45Sc为单一标准，对k0-NAA和IM-NAA方法的准确性进行了评价。测定的浓度被发现与认证值或推荐值很好地一致，这得到了计算的z分数在±（0.1-1）范围内的支持，对于smes - ii， G-2和RGM-1中的许多元素，在95.5%的置信水平上。以Sc为单一标准，采用IMNAA法测定了两种不同钠钙玻璃样品中大部分微量元素的浓度。利用IMNAA方法对USGS CRM RGM-1和一个Glass样品进行分析，并与相对NAA方法进行比较。

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Applications of a mono-standard NAA method using upgraded Apsara research reactor for trace element determination in glass matrices

The k₀-based Internal Mono-standard Neutron Activation Analysis (IM-NAA) technique was optimized utilizing a core irradiation position at the Apsara-U research reactor of BARC, Mumbai, India. The cadmium ratio method was utilized to evaluate the epi-thermal neutron shape parameter, α, using both dual and multiple monitor methods and the f-value was derived from ¹⁹⁷Au. The IM-NAA and the conventional k₀-NAA methods were validated by analyzing SMELS-II (synthetic multi-element standards from IRMM), whereas United States Geological Survey Certified Reference Material (USGS CRM), Granite (G-2) and Rhyolite Glass Mountain (RGM-1) were analyzed to evaluate the accuracy of k₀-NAA and IM-NAA methods utilizing ¹⁹⁷Au and ⁴⁵Sc as mono standards. The determined concentrations were found to be in good agreement with certified or recommended values, and this is supported by calculated Z-scores in the range of ±(0.1–1), for many elements in SMELS-II, G-2 & RGM-1 at 95.5 % confidence level. The IMNAA method, utilizing Sc as the mono-standard was utilized to determine mostly trace elemental concentrations in two different soda-lime glass samples. The IMNAA method, utilized for analyzing USGS CRM RGM-1 and one Glass sample was further compared with relative NAA method.

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.