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Substöchiometrische Isotopenverdünnungsanalyse von Quecksilber mit N,N-Di-n-butyl-N′-benzoylthioharnstoff

Substoichiometric isotope-dilution analysis of mercury with N,N-di-n-butyl-N′-benzoylthiourea

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Summary

The method for the determination of mercury with N,N-di-n-butyl-N′-benzoylthiourea (DBBT) and pentene-stabilized chloroform described here has the limit of determination at a concentration of c Hg=5.0 E-8 g/ml. The rate of recovery in the examined range between c Hg=1.0 E-4 g/ml and c Hg=2.5 E-8 g/ml has a coefficient of correlation of 0.9995. All metals forming complexes with DBBT (with the exception of the platinum metals, whose stability constants with DBBT are larger than that of mercury [16]) were examined with regard to any interfering with the determination of mercury; no significant interference was found.

The efficiency of the method was proved by the examination of a mercury containing industrial process water. A very good agreement with a conventional method (AAS) was found.

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Authors and Affiliations

  1. Institut für Anorganische Chemie der Universität, Niederurseler Hang, D-6000, Frankfurt/M. 50, Bundesrepublik Deutschland

    Th. Schucknecht & K. -H. König

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  1. Th. Schucknecht
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  2. K. -H. König
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Schucknecht, T., König, K.H. Substöchiometrische Isotopenverdünnungsanalyse von Quecksilber mit N,N-Di-n-butyl-N′-benzoylthioharnstoff. Z. Anal. Chem. 332, 7–10 (1988). https://doi.org/10.1007/BF00487021

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  • DOI: https://doi.org/10.1007/BF00487021

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