Journal of Guangdong University of Technology ›› 2018, Vol. 35 ›› Issue (01): 84-87.doi: 10.12052/gdutxb.170110

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Determination of Mercury, Arsenic and Cadmium in Soils/Sediments with the Refluxing Digestion of Aqua Regia

Chen Ze-zhi1,2, Zhao Zhi-nan2, He Qun-hua2   

  1. 1. Guangdong Provincial Public Laboratory of Analysis and Testing Technology, Guangdong Institute of Analysis, Guangzhou 510070, China;
    2. Environmental Protection Monitoring Center of Guangdong Province, Guangzhou 510308, China
  • Received:2017-05-26 Online:2018-01-09 Published:2017-12-22

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Abstract: Hg, As and Cd in soil/sediment samples were determined with the refluxing digestion of aqua regia. Cd was determined by Graphite Furnace Atomic Absorption Spectrometry. Hg and As were determined by Atomic Fluorescence Spectrometry. 8 geochemical standard reference material of soil/sediment were tested. The test data showed that the determination of standard reference material were within the reference range. The relative standard deviation of Hg, As and Cd were 2.9%~8.2%,1.2%~5.6% and 3.4%~6.8%. The detection limit, precision and accuracy of the methods met the requirements of the determination of soil.

Key words: soil, sediment, aqua regia digestion, heavy metal

CLC Number: 

  • X833
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