Determination of tin in marine sediment slurries by electrothermal atomic absorption spectrometry using palladium-magnesium nitrate as chemical modifier |
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| Authors: | Pilar Bermejo-Barrera Carmen Barciela-Alonso Consuelo González-Sixto Adela Bermejo-Barrera |
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| Institution: | (1) Department of Analytical Chemistry, Nutrition and Bromatology, Faculty of Chemistry, University of Santiago de Compostela, E-15706 Santiago de Compostela, Spain, ES |
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| Abstract: | A method was optimized for the determination of tin in slurries of marine sediment samples using palladium-magnesium nitrate
as chemical modifier and Triton X-100 (0.1%) surfactant as stabilizer. To obtain a complete pyrolysis of the slurry sample,
two charring steps were used, the first at 480 °C and the second at 1300 °C. The precision and accuracy of the method were
studied using the Reference Material PACS-1 (marine sediment) from National Research Council Canada. The detection limit (LOD)
was 57.6 μg kg-1. The method was applied to the determination of tin in marine sediment samples from the Galicia coast.
Received: 16 February 1996/Revised: 26 March 1996/Accepted: 12 April 1996 |
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