采用X射线荧光法对多孔碳材料中痕量重金属和选定的造岩元素进行定量测定。

Quantitative Determination of Trace Heavy Metals and Selected Rock-Forming Elements in Porous Carbon Materials by the X-ray Fluorescence Method.

作者信息

Povarov Vladimir G, Kopylova Tatyana N, Sinyakova Maria A, Rudko Viacheslav A

机构信息

Saint Petersburg Mining University, 2, 21st Line, Saint Petersburg 199106, Russia.

Saint Petersburg State University, 13B Universitetskaya Emb., Saint Petersburg 199034, Russia.

出版信息

ACS Omega. 2021 Sep 15;6(38):24595-24601. doi: 10.1021/acsomega.1c03217. eCollection 2021 Sep 28.

DOI:10.1021/acsomega.1c03217

PMID:34604641

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8482509/

Abstract

A new X-ray fluorescence (XRF) method is proposed for sample preparation and impurity quantification for elements heavier than sodium in carbon materials. The analysis is suitable for various materials including amorphous ones, such as petroleum cokes, with an impurity content higher than 0.01%. We compared a new method with the regular additive method to measure impurities in electrode graphite and petroleum coke. The XRF-based method provides the same sensitivity and accuracy and much greater reproducibility of the analysis results for variations in the sample mass, its density, and coverage by exciting X-ray radiation. The method does not require changes in the instrument software and is easily implemented on commercial analytical equipment.

摘要

提出了一种新的X射线荧光（XRF）方法，用于碳材料中钠以上元素的样品制备和杂质定量分析。该分析适用于各种材料，包括非晶态材料，如杂质含量高于0.01%的石油焦。我们将这种新方法与常规添加法进行了比较，以测量电极石墨和石油焦中的杂质。基于XRF的方法具有相同的灵敏度和准确性，并且对于样品质量、密度以及激发X射线辐射覆盖范围的变化，分析结果具有更高的重现性。该方法不需要更改仪器软件，并且易于在商业分析设备上实施。