Precision and trueness of a method for determing antimony content in groundwater using hydride generation-atomic fluorescence spectrometry

Bing-bing Liu; Lin Zhang; Ke Li

doi:10.26599/JGSE.2026.9280071

Volume 14 Issue 1

Mar. 2026

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Article Navigation > Journal of Groundwater Science and Engineering > 2026 > 14(1): 49-58

Liu BB, Zhang L, Li K. 2026. Precision and trueness of a method for determing antimony content in groundwater using hydride generation-atomic fluorescence spectrometry. Journal of Groundwater Science and Engineering, 14(1): 49-58 doi: 10.26599/JGSE.2026.9280071

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Precision and trueness of a method for determing antimony content in groundwater using hydride generation-atomic fluorescence spectrometry

doi: 10.26599/JGSE.2026.9280071

Bing-bing Liu^{1, 2},
Lin Zhang^{1
,
,},
Ke Li¹

1.
Institute of Hydrogeology and Environmental Gelogy, Chinese Academy of Geological Science, Shijiazhuang 050001, China
2.
Key Laboratory of Groundwater Remediation of Hebei Province and China Geological Survey, Zhengding 050803, Hebei, China

More Information

Corresponding author: zhl5369@163.com
Received Date: 2025-02-26
Accepted Date: 2025-10-10

Available Online: 2025-11-20

Publish Date: 2026-03-15

Abstract

Abstract

At present, there is currently a lack of unified standard methods for the determination of antimony content in groundwater in China. The precision and trueness of related detection technologies have not yet been systematically and quantitatively evaluated, which limits the effective implementation of environmental monitoring. In response to this key technical gap, this study aimed to establish a standardized method for determining antimony in groundwater using Hydride Generation–Atomic Fluorescence Spectrometry (HG-AFS). Ten laboratories participated in inter-laboratory collaborative tests, and the statistical analysis of the test data was carried out in strict accordance with the technical specifications of GB/T 6379.2—2004 and GB/T 6379.4—2006. The consistency and outliers of the data were tested by Mandel's h and k statistics, the Grubbs test and the Cochran test, and the outliers were removed to optimize the data, thereby significantly improving the reliability and accuracy. Based on the optimized data, parameters such as the repeatability limit (r), reproducibility limit (R), and method bias value (δ) were determined, and the trueness of the method was statistically evaluated. At the same time, precision-function relationships were established, and all results met the requirements. The results show that the lower the antimony content, the lower the repeatability limit (r) and reproducibility limit (R), indicating that the measurement error mainly originates from the detection limit of the method and instrument sensitivity. Therefore, improving the instrument sensitivity and reducing the detection limit are the keys to controlling the analytical error and improving precision. This study provides reliable data support and a solid technical foundation for the establishment and evaluation of standardized methods for the determination of antimony content in groundwater.
- Mandel's h and k statistics,
- Grubbs test,
- Cochran test,
- Repeatability limit,
- Reproducibility limit,
- Method bias value

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References(28)

References

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2305-7068/© Journal of Groundwater Science and Engineering Editorial Office. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0)

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