Rapid sensitive speciation analysis of butyl- and phenyltin compounds in water by capillary gas chromatography atomic emission spectrometry (GC-AES) after in-situ ethylation and in-liner preconcentration

M. Ceulemans , Ryszard Lobinski (1) , W.M.R. Dirkx , F.C. Adams

1 LCABIE - Laboratoire de Chimie Analytique Bio-Inorganique et Environnement

A rapid, simple and sensitive method has been developed for the simultaneous determination of butyl- and phenyltin species in environmental waters. The ionic organotin compounds are ethylated in the aqueous phase using sodium tetraethylborate (NaBEt4) and extracted with hexane. A 25 ?l aliquot of the extract is injected at a low temperature into a Tenax filled liner. After solvent venting the analytes are transferred onto the capillary column using programmed temperature vaporization (PTV) injection. Detection is done by means of a microwave induced plasma atomic emission detector (MIP AED). The method allows the determination of butyl- and phenyltin compounds in water samples down to the level of 0.1 ng/l (as Sn) while 50 ml of sample is sufficient for analysis. The accuracy of the method was confirmed by GC-AAS after chelation and Grignard derivatization. © 1993 Springer-Verlag.

Domaines: Chimie analytique

M. Ceulemans, Ryszard Lobinski, W.M.R. Dirkx, F.C. Adams. Rapid sensitive speciation analysis of butyl- and phenyltin compounds in water by capillary gas chromatography atomic emission spectrometry (GC-AES) after in-situ ethylation and in-liner preconcentration. Fresenius' Journal of Analytical Chemistry, 1993, 347 (6-7), pp.256-262. ⟨10.1007/BF00323968⟩. ⟨hal-00292003⟩