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Separation of methyltin species from inorganic tin, and their interactions with humates in natural waters

  • Nuclear Methods in Environmental Science Section
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Abstract

Tin(II) and tin(IV) are absorbed from aqueous solutions by Sephadex G-25 gel, from which they can be eluted by humates or fulvates, with which they interact more strongly. Methyltin species are not absorbed by Sephadex G-25, and so can be separated from inorganic tin. Both inorganic tin and methyltin species in natural waters at pH 7.4 can be quantitatively retained by passing through small columns of Chelex-100 resin: the methyltin species can then be washed off the resin with 4M nitric acid. Trimethyltin chloride113Sn in water scarcely interacts with fulvates, humates, kaolinite or montmorillonite but is absorbed bySphagnum peat. Dimethyltin dichloride-113Sn reacts significantly with all the above materials after 2 hours equilibration. Methyltin trichloride-113Sn interacts weakly in alkaline solutions.

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Authors and Affiliations

  1. Department of Chemistry, Reading University, Whiteknights, Reading, Berks, (England)

    M. Omar & H. J. M. Bowen

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  1. M. Omar
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  2. H. J. M. Bowen
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Omar, M., Bowen, H.J.M. Separation of methyltin species from inorganic tin, and their interactions with humates in natural waters. J. Radioanal. Chem. 74, 273–282 (1982). https://doi.org/10.1007/BF02520378

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  • DOI: https://doi.org/10.1007/BF02520378

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