Summary
A rapid and simple method to determineμg and sub-μg amounts of sulfide has been developed. It involves the addition of a known amount of mercury(II) to the sample solution, formation of stable HgS, and determination of the residual mercury(II) in the solution by flameless atomic absorption spectrometry. The proposed method allows sulfide to be determined down to 0.2 ppb with a relative standard deviation of less than 2%.
Zusammenfassung
Ein schnelles und einfaches Verfahren zur Bestimmung von Mikrogramm und Submikrogrammengen Sulfid wurde ausgearbeitet. Es beruht auf der Zugabe einer bekannten Menge Hg(II) zur Probelösung, der Bildung von beständigem HgS und der Bestimmung des restlichen Hg(II) durch flammenlose Atomarabsorptionsspektrometrie. Die vorgeschlagene Methode erlaubt die Bestimmung von mindestens 0,2 ppb Sulfid mit einer relativen Standardabweichung von weniger als 2%.
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Yoshida, Z., Takahashi, M. Indirect determination of submicrogram amounts of sulfide by flameless atomic absorption spectrometry of mercury. Mikrochim Acta 67, 459–468 (1977). https://doi.org/10.1007/BF01195956
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DOI: https://doi.org/10.1007/BF01195956