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Lithiumbestimmung mit Matrixmodifier KH2PO4 in Triton X-100 im biologischen Material

Determination of lithium with matrix modifier KH2PO4 in triton X-100 in biological material

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Summary

The measurement signal of lithium is especially strongly suppressed in biological material by sodium, calcium and magnesium. The method described largely prevents this signal lowering by treatment of the sample with KH2PO4 in the determination of lithium with electrothermal atomic absorption. This makes a further processing of the serum sample by digestion superfluous. Calibration is carried out with the standard addition procedure. With the method presented, a limit of detection of 0.5 μg lithium/l serum can be attained with an injection volume of 20 μl.

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Authors and Affiliations

  1. Fakultät Chemie, Zhejiang Universität, Zhejiang Hangzhou, Volksrepublik China

    Y. Feng

  2. Institut und Poliklinik für Arbeitsmedizin der Ludwig-Maximilians-Universität, Ziemssenstrasse 1, D-8000, München 2, Bundesrepublik Deutschland

    K. Bencze & Ch. Pelikan

Authors
  1. Y. Feng
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  2. K. Bencze
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  3. Ch. Pelikan
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Feng, Y., Bencze, K. & Pelikan, C. Lithiumbestimmung mit Matrixmodifier KH2PO4 in Triton X-100 im biologischen Material. Z. Anal. Chem. 329, 595–599 (1987). https://doi.org/10.1007/BF00488210

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  • DOI: https://doi.org/10.1007/BF00488210

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