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Original Articles

Tl-speciation of aqueous samples – a review of methods and application of IC-ICP-MS/LC-MS procedures for the detection of (CH3)2Tl+ and Tl+ in river water

, , , , &
Pages 790-807 | Received 05 Mar 2015, Accepted 25 May 2015, Published online: 01 Jul 2015
 

Abstract

This study provides an overview on Tl-speciation methods developed in the last years. Most of them require transformation of a species and do not allow direct detection of the species of interest. LC-MS and IC-ICP-MS methods are optimised for direct analysis of the Tl-species Tl+ and (CH3)2Tl+ (dimethylthallium (DMT)) in freshwater on a ng L−1 level. The methods are applied in a study of water from Vicht River in Stolberg (Germany). Tl+ is shown to be at least in part derived from anthropogenic sources among which the industrial sources may be significant. The natural occurrence of DMT is proven, although this Tl-species is temporally variable in abundance and Tl+ predominates.

Acknowledgements

Dr. Hausmann (Administration City of Stolberg) is thanked for advice and giving access to sampling locations. The help of G. Günther und H. Bostelmann (retrieval of literature) and P. Zimmermann (technical support) is gratefully acknowledged.

Additional information

Funding

This research was funded by grants [SCHW750/16-1] and [SI810/4-1] of Deutsche Forschungsgemeinschaft (DFG).

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