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Artifacts during the extraction of butyltin compounds from solid samples !


Degradation was most pronounced during extraction from solid materials when
using alkaline extraction with TMAH (up to 52% degradation of DBT to MBT after 4 hours) or microwave-assisted extraction at prolonged process time (ca. 16 minutes). The reverse butylation of tin and butyltin compounds was not observed. The isotope dilution methodology is not able to correct for incomplete extraction but allows the study and optimisation of conditions where quantitative extraction is obtained by minimising the errors which occur in the whole analytical procedure.

Michael Sperling

Source: Presentation given at ICEBAMO 03, Pau, France, December 3-5, 2003

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