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Study and application on the method for determining arsenic in sediment samples using the water-carrier combined with atomic fluorescence spectrometry
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Li LI, Dongfa GUO, Yanan WANG, Shengkai XIE
World Nuclear Geoscience | 2025, 42(2) : 414 - 422
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World Nuclear Geoscience | 2025, 42(2): 414-422
• RESEARCH ARTICALS •
Study and application on the method for determining arsenic in sediment samples using the water-carrier combined with atomic fluorescence spectrometry
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Li LI, Dongfa GUO, Yanan WANG, Shengkai XIE
Affiliations
  • Beijing Research Institute of Uranium Geology， Beijing 100029， China
Published: 2025-04-08 doi: 10.3969/j.issn.1672-0636.2025.02.015
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Accurately determining the arsenic （As） content in stream sediments can provide data for geological exploration. Traditional method for analyzing As is atomic fluorescence spectrometry （AFS） with diluted acid as the carrier， this study investigated the memory effect and stability of AFS using water as the carrier for As, analyzed the procedural blanks of As in two methods—mixed acids digestion and aqua regia extraction and the background of four reagents （HNO3，HCl，HF，HClO4）with AFS，discussed the impact of reagent backgrounds on the results. The results indicate that the AFS using water carrier has low memory effect and superior stability，and it only takes 30 s to finish the analysis of a sample. The total procedural blank of As in the mixed acid dissolution is higher than that in the aqua regia extraction，and the background in HF is the highest among the reagents，leading to a significant deviation of the reference values from the recommended values. The study established a method combining aqua regia extraction with water carrier AFS analysis，with a detection limit of 0.028 μg·g-1，accuracy from 0.14 % to 4.0 %，and precision better than 3.4 %，making it suitable for rapid analysis of a large number of samples.

arsenic  /  stream sediment  /  background  /  water carrier  /  AFS
Li LI, Dongfa GUO, Yanan WANG, Shengkai XIE. Study and application on the method for determining arsenic in sediment samples using the water-carrier combined with atomic fluorescence spectrometry[J]. World Nuclear Geoscience, 2025 , 42 (2) : 414 -422 . DOI: 10.3969/j.issn.1672-0636.2025.02.015
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Year 2025 volume 42 Issue 2
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Article Info
doi: 10.3969/j.issn.1672-0636.2025.02.015
  • Receive Date：2025-02-20
  • Online Date：2025-10-29
  • Published：2025-04-08
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  • Received：2025-02-20
  • Revised：2025-03-16
Affiliations
    Beijing Research Institute of Uranium Geology， Beijing 100029， 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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