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Evaluation of Measurement Uncertainty in Determining Gold Content in Gold Ore by Atomic Absorption Spectrometry
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Bin XU1, Chunyan LIU2, Binghong YANG1, Ying PENG1, Yanhua LIU1, Lin YANG1, Zhiyong ZHANG3
Mining and Metallurgical Engineering | 2026, 46(3) : 204 - 209
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Mining and Metallurgical Engineering | 2026, 46(3): 204-209
• METALLURGY •
Evaluation of Measurement Uncertainty in Determining Gold Content in Gold Ore by Atomic Absorption Spectrometry
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Bin XU1, Chunyan LIU2, Binghong YANG1, Ying PENG1, Yanhua LIU1, Lin YANG1, Zhiyong ZHANG3
Affiliations
  • 1.Testing Technology Company of Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China
  • 2.Hunan Chemical Vocational Technology College, Zhuzhou 412000, Hunan, China
  • 3.Hunan Vocational Institute of Safety Technology, Changsha 410151, Hunan, China
doi: 10.3969/j.issn.0253-6099.2026.03.030
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In accordance with GB/T 20899.1-2019, a mathematical model was established to analyze and calculate uncertainties from various sources in determining gold content in gold ores by fire assay combined with atomic absorption spectroscopy. Based on the combined calculation, it is shown that when the gold content of the ore samples is 2.28 g/t, the standard uncertainty of this method is 0.04 g/t, and with a coverage factor k=2, the expanded uncertainty is 0.08 g/t. Comparison of uncertainty contributions indicates that repeatability of sample measurement and standard curve fitting are the major influencing factors. Therefore, it is recommended that measuring instruments should be kept in optimal condition, and the number of replicate measurements be increased to reduce measurement uncertainty.

atomic absorption spectroscopy  /  gold ore  /  gold  /  uncertainty  /  chemical analysis
许彬, 刘春艳, 杨炳红, 彭颖, 刘艳花, 杨林, 张志勇. 原子吸收光谱法测定金矿石中金含量的测量不确定度评定. 矿冶工程杂志, 2026 , 46 (3) : 204 -209 . DOI: 10.3969/j.issn.0253-6099.2026.03.030
Bin XU, Chunyan LIU, Binghong YANG, Ying PENG, Yanhua LIU, Lin YANG, Zhiyong ZHANG. Evaluation of Measurement Uncertainty in Determining Gold Content in Gold Ore by Atomic Absorption Spectrometry[J]. Mining and Metallurgical Engineering, 2026 , 46 (3) : 204 -209 . DOI: 10.3969/j.issn.0253-6099.2026.03.030
Appendix
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Year 2026 volume 46 Issue 3
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Article Info
doi: 10.3969/j.issn.0253-6099.2026.03.030
  • Receive Date：2025-12-20
  • Online Date：2026-10-08
Article Data
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  • Received：2025-12-20
Funding
Affiliations
    1.Testing Technology Company of Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China
    2.Hunan Chemical Vocational Technology College, Zhuzhou 412000, Hunan, China
    3.Hunan Vocational Institute of Safety Technology, Changsha 410151, Hunan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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