Abtrennung und gas-chromatographische Bestimmung von Fluoridspuren |
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| Authors: | Rudolf Bock Sigrid Strecker |
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| Affiliation: | 1.Institut für Anorganische Chemie und Kernchemie der Johannes Gutenberg-Universit?t,Mainz;2.Chemin de Béranges 141,Schweiz |
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| Abstract: | Traces of fluoride can be separated from aqueous solution by extraction with (C2H5)3SiCl in m-xylene or with (C6H6)4SbOH in CH2Cl2. Furthermore, several coprecipitation reactions were tested; adsorption on hydroxyl apatite is most suitable.Determination of 0.05 μg F?/ml can be performed by gas chromatography of (C2H5)3SiF in m-xylene using flame ionisation detectors; but variable blanks of 0.5–1.5 μg F? normally prevent the determination of less than ca. 3 μg F?. |
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