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Determination of the sulphur content of geological samples by X-ray fluorescent analysis

Schwefelbestimmung in geologischen Proben durch Röntgenfluorescenz-Analyse

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Zusammenfassung

Eine Methode zur röntgenfluorescenzanalytischen Schwefelbestimmung an ultrabasischen und basischen Gesteinen wird beschrieben. Die Messung erfolgt an Preßtabletten mit handelsüblichem Cellulosepulver oder Wachs als Verdünnungsmittel. Zwei Analysatorkristalle, PET und Graphit, werden verglichen. Die lineare Eichkurve umfaßt den Konzentrationsbereich zwischen 50 ppm und 1 Gew.-% S. Die Nachweisgrenze liegt bei 90 bzw. 45 ppm, je nach verwendetem Kristall. Bei annähernd übereinstimmender Matrix von Standard- und Analysenprobe ist eine rechnerische Matrixkorrektur nicht erforderlich.

Summary

The sulphur content of ultramafic and basic rocks is determined by X-ray fluorescent analysis with pressed powder pellets. A commonly marked cellulose powder and wax are taken as diluent. Two analysing crystals, PET and graphite, are compared. The linear calibration curve reaches from 50 ppm to 1.0 weight-%, with a detection limit of 90 and 45 ppm, respectively. If the standard rock is of nearly the same matrix as the examined samples, no calculated matrix correction is necessary.

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Wannemacher, J., Heilmann, H. Determination of the sulphur content of geological samples by X-ray fluorescent analysis. Z. Anal. Chem. 304, 125–128 (1980). https://doi.org/10.1007/BF00474369

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  • DOI: https://doi.org/10.1007/BF00474369

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