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An application of electrothermal evaporation using direct solids sampling coupled with microwave induced plasma optical emission spectroscopy to elemental determinations in biological matrices

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Summary

Electrothermal evaporation of mg-amounts of powders in a graphite furnace and excitation of the analyte vapour in a 50-W argon MIP according to Beenakker is investigated. Detection limits of Cu, Fe and Mn are in the subμg/g concentration range and relative standard deviations of the measured signals are about 0.1. Calibration can be done by using a standard addition with solution aliquots. The analytical accuracy has been shown to improve, when applying time-resolved and simultaneous measurements of line and background intensities. The technique can be applied to microanalysis of real samples as shown for the direct determination of 10 to 170μg/g manganese in some NBS biological standard reference materials.

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Authors and Affiliations

  1. Institut für Spektrochemie und angewandte Spektroskopie (ISAS), Dortmund, Federal Republic of Germany

    J. A. C. Broekaert & F. Leis

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  1. J. A. C. Broekaert
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  2. F. Leis
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Broekaert, J.A.C., Leis, F. An application of electrothermal evaporation using direct solids sampling coupled with microwave induced plasma optical emission spectroscopy to elemental determinations in biological matrices. Mikrochim Acta 86, 261–272 (1985). https://doi.org/10.1007/BF01197826

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  • DOI: https://doi.org/10.1007/BF01197826

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