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A New Method for Determination of Rare Earth Elements Vaporized in Graphite Furnace with a Polytetrafluoroethylene Slurry Fluorinating Reagent by Inductively Coupled Plasma Atomic Emission Spectrometry

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Abstract

A new method based on fluorinating vaporization from a graphite furnace for ICP-AES by using a polytetrafluoroethylene slurry as a fluorinating reagent has been established to determine rare earth elements which are easily formed into refractory carbides. The detection limits were within the range 10~10 to 10~12 g, and were typically two orders of magnitude better than that obtained with conventional electrothermal vaporization (ETV)-ICP-AES. No memory effect was observed. The relative standard deviation was better than 5%. Some factors which affected fluorinating vaporization are also discussed. It is concluded that ETV-ICP-AES is superior to GFAAS when the carbide-forming elements are determined.

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Authors and Affiliations

  1. Department of Chemistry, Wuhan University, Wuhan, 430072, People’s Republic of China

    Min Huang, Zucheng Jiang & Yun’e Zeng

  2. Center of Material Research and Testing, Wuhan University of Technology, Wuhan, 430070, People’s Republic of China

    Min Huang

Authors
  1. Min Huang
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  2. Zucheng Jiang
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  3. Yun’e Zeng
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Huang, M., Jiang, Z. & Zeng, Y. A New Method for Determination of Rare Earth Elements Vaporized in Graphite Furnace with a Polytetrafluoroethylene Slurry Fluorinating Reagent by Inductively Coupled Plasma Atomic Emission Spectrometry. ANAL. SCI. 7, 773–778 (1991). https://doi.org/10.2116/analsci.7.773

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  • DOI: https://doi.org/10.2116/analsci.7.773

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