Optimizing k0-NAA with different irradiation regimes for analysis of coral skeleton as a potential climate proxy indicator

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-08-14 DOI:10.1007/s10967-024-09679-0

Dina Hajjar, Arwa A. Makki, Mahmoud Mohery, Mohamed Soliman

引用次数: 0

Abstract

The elemental composition of coral skeletons supplies essential information about palaeoceanographic reconstructions. The present work aims to optimize the neutron activation analysis (NAA) protocol for determining Ca-substituting elements in coral skeletons, which can be considered as a potential indicator for reconstructing past climate variability. Conventional and epithermal NAA schemes have been applied to determine 22 elements. The results reveal that the use of epithermal NAA significantly improved the limits of detection, up to 10 times, for specific elements, e.g. As, Ba, Cd, Mn, Sr, etc. The Compton suppression counting regime yielded an additional improvement in the limits of detection.

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优化不同辐照制度下的 k0-NAA 以分析作为潜在气候替代指标的珊瑚骨骼

珊瑚骨骼的元素组成为古海洋学重建提供了重要信息。本研究旨在优化中子活化分析（NAA）方案，以确定珊瑚骨骼中的钙替代元素，这些元素可被视为重建过去气候变异性的潜在指标。常规和表观中子活化分析方案用于测定 22 种元素。结果表明，对于特定元素（如 As、Ba、Cd、Mn、Sr 等），使用外延 NAA 能显著提高检测限，最高可达 10 倍。康普顿抑制计数法还进一步提高了探测极限。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.